CVE-2025-40026
published 2025-10-28CVE-2025-40026: In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing…
PriorityP338high7.9CVSS 3.1
AVLACLPRLUINSCCLILAH
EPSS
0.16%
5.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
When completing emulation of instruction that generated a userspace exit
for I/O, don't recheck L1 intercepts as KVM has already finished that
phase of instruction execution, i.e. has already committed to allowing L2
to perform I/O. If L1 (or host userspace) modifies the I/O permission
bitmaps during the exit to userspace, KVM will treat the access as being
intercepted despite already having emulated the I/O access.
Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation.
Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the
intended "recipient") can reach the code in question. gp_interception()'s
use is mutually exclusive with is_guest_mode(), and
complete_emulated_insn_gp() unconditionally pairs EMULTYPE_NO_DECODE with
EMULTYPE_SKIP.
The bad behavior was detected by a syzkaller program that toggles port I/O
interception during the userspace I/O exit, ultimately resulting in a WARN
on vcpu->arch.pio.count being non-zero due to KVM no completing emulation
of the I/O instruction.
WARNING: CPU: 23 PID: 1083 at arch/x86/kvm/x86.c:8039 emulator_pio_in_out+0x154/0x170 [kvm]
Modules linked in: kvm_intel kvm irqbypass
CPU: 23 UID: 1000 PID: 1083 Comm: repro Not tainted 6.16.0-rc5-c1610d2d66b1-next-vm #74 NONE
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
RIP: 0010:emulator_pio_in_out+0x154/0x170 [kvm]
PKRU: 55555554
Call Trace:
kvm_fast_pio+0xd6/0x1d0 [kvm]
vmx_handle_exit+0x149/0x610 [kvm_intel]
kvm_arch_vcpu_ioctl_run+0xda8/0x1ac0 [kvm]
kvm_vcpu_ioctl+0x244/0x8c0 [kvm]
__x64_sys_ioctl+0x8a/0xd0
do_syscall_64+0x5d/0xc60
entry_SYSCALL_64_after_hwframe+0x4b/0x53
Affected
32 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.158-1 (bookworm) | linux 6.1.158-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.158-1 (bookworm) | linux 6.1.158-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < a908eca437789589dd4624da428614c1275064dc | a908eca437789589dd4624da428614c1275064dc |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < 00338255bb1f422642fb2798ebe92e93b6e4209b | 00338255bb1f422642fb2798ebe92e93b6e4209b |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < e0ce3ed1048a47986d15aef1a98ebda25560d257 | e0ce3ed1048a47986d15aef1a98ebda25560d257 |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < ba35a5d775799ce5ad60230be97336f2fefd518e | ba35a5d775799ce5ad60230be97336f2fefd518e |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < 3d3abf3f7e8b1abb082070a343de82d7efc80523 | 3d3abf3f7e8b1abb082070a343de82d7efc80523 |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < e7177c7e32cb806f348387b7f4faafd4a5b32054 | e7177c7e32cb806f348387b7f4faafd4a5b32054 |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < 3a062a5c55adc5507600b9ae6d911e247e2f1d6e | 3a062a5c55adc5507600b9ae6d911e247e2f1d6e |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < 7366830642505683bbe905a2ba5d18d6e4b512b8 | 7366830642505683bbe905a2ba5d18d6e4b512b8 |
| linux | linux | >= 8a76d7f25f8f24fc5a328c8e15e4a7313cf141b9 < e750f85391286a4c8100275516973324b621a269 | e750f85391286a4c8100275516973324b621a269 |
| linux | linux_kernel | >= 0 < 5.10.247-1 | 5.10.247-1 |
| linux | linux_kernel | >= 0 < 6.1.158-1 | 6.1.158-1 |
| linux | linux_kernel | >= 0 < 6.12.57-1 | 6.12.57-1 |
| linux | linux_kernel | >= 0 < 6.17.6-1 | 6.17.6-1 |
| linux | linux_kernel | >= 0 < 5.15.0-170.180 | 5.15.0-170.180 |
| linux | linux_kernel | >= 0 < 6.8.0-106.106 | 6.8.0-106.106 |
| linux | linux_kernel | >= 0 < 6.17.0-7.7 | 6.17.0-7.7 |
| linux | linux_kernel | >= 3.0.0 < 5.4.301 | 5.4.301 |
| linux | linux_kernel | >= 5.11.0 < 5.15.195 | 5.15.195 |
| linux | linux_kernel | >= 5.16.0 < 6.1.157 | 6.1.157 |
| linux | linux_kernel | >= 5.5.0 < 5.10.246 | 5.10.246 |
| linux | linux_kernel | >= 6.13.0 < 6.16.12 | 6.16.12 |
| linux | linux_kernel | >= 6.17.0 < 6.17.2 | 6.17.2 |
CVSS provenance
nvdv3.17.9HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_redhat5.5MEDIUM
vendor_msrc3.6LOW
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CVE-2026-23404, CVE-2026-23405, CVE-2026-23406, CVE-2026-23407,
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memory), local privilege escalation, or possibly escape a container.
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causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853, CVE-2026-23268, CVE-2026-23269, CVE-2026-23403,
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causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
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causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
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use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
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Qualys discovered that several vulnerabilities existed in the AppArmor
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causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
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An attacker could possibly use these to compromise the system.
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use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
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use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
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Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
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Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
-
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Qualys discovered that several vulnerabilities existed in the AppArmor
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use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
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- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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CVE-2025-40153 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
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CVE-2025-40153 [MEDIUM] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
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CVE-2025-40154 [MEDIUM] Linux kernel (NVIDIA Tegra IGX) vulnerabilities
Title: Linux kernel (NVIDIA Tegra IGX) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device d
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2026-02-13·CVSS 5.5
CVE-2025-40153 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Net
Ubuntu
Linux kernel (NVIDIA Tegra) vulnerabilities
vendor_ubuntu·2026-02-12·CVSS 5.5
CVE-2025-40154 [MEDIUM] Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drive
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2026-02-12·CVSS 5.5
CVE-2025-40153 [MEDIUM] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Ne
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-02-12·CVSS 5.5
CVE-2025-40153 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network d
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-02-12·CVSS 5.5
CVE-2025-40154 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network d
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2025-12-11
CVE-2025-40026 Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- Cryptographic API;
- Android drivers;
- TTY drivers;
- F2FS file system;
- 9P file system network protocol;
(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,
CVE-2025-40108, CVE-2025-40109)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third par
Ubuntu
Linux kernel (GCP) vulnerabilities
vendor_ubuntu·2025-12-05
CVE-2025-40026 Linux kernel (GCP) vulnerabilities
Title: Linux kernel (GCP) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- Cryptographic API;
- Android drivers;
- TTY drivers;
- F2FS file system;
- 9P file system network protocol;
(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,
CVE-2025-40108, CVE-2025-40109)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-12-03
CVE-2025-40025 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- Cryptographic API;
- Android drivers;
- TTY drivers;
- F2FS file system;
- 9P file system network protocol;
(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,
CVE-2025-40108, CVE-2025-40109)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modul
Red Hat
kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
vendor_redhat·2025-10-28·CVSS 5.5
CVE-2025-40026 [MEDIUM] CWE-754 kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
When completing emulation of instruction that generated a userspace exit
for I/O, don't recheck L1 intercepts as KVM has already finished that
phase of instruction execution, i.e. has already committed to allowing L2
to perform I/O. If L1 (or host userspace) modifies the I/O permission
bitmaps during the exit to userspace, KVM will treat the access as being
intercepted despite already having emulated the I/O access.
Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation.
Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the
intended "recipi
Microsoft
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
vendor_msrc·2025-10-14·CVSS 3.6
CVE-2025-40026 [LOW] KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Debian
CVE-2025-40026: linux - In the Linux kernel, the following vulnerability has been resolved: KVM: x86: D...
vendor_debian·2025
CVE-2025-40026 CVE-2025-40026: linux - In the Linux kernel, the following vulnerability has been resolved: KVM: x86: D...
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O, don't recheck L1 intercepts as KVM has already finished that phase of instruction execution, i.e. has already committed to allowing L2 to perform I/O. If L1 (or host userspace) modifies the I/O permission bitmaps during the exit to userspace, KVM will treat the access as being intercepted despite already having emulated the I/O access. Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation. Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the intended "recipient") can reach the code in question. gp_interception()'s use is mutually exclu
OSV
linux-raspi vulnerabilities
osv·2026-04-01·CVSS 7.8
CVE-2026-23268 [HIGH] linux-raspi vulnerabilities
linux-raspi vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853, CVE-2026-23268, CVE-2026-23269)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- PowerPC architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM
OSV
linux-raspi, linux-raspi-realtime vulnerabilities
osv·2026-04-01
linux-raspi, linux-raspi-realtime vulnerabilities
linux-raspi, linux-raspi-realtime vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 archi
OSV
linux-azure-6.8 vulnerabilities
osv·2026-03-25·CVSS 3.2
[LOW] linux-azure-6.8 vulnerabilities
linux-azure-6.8 vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
It was discovered that improper initialization of CPU cache memory could
allow a local attacker with hypervisor access to overwrite SEV-SNP guest
memory resulting in loss of data integrity. (CVE-2024-36331)
Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos,
and Flavien Solt discovered that some AMD processors may allow an attacker
to infer data from previous stores,
OSV
linux-azure vulnerabilities
osv·2026-03-25
linux-azure vulnerabilities
linux-azure vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Xtensa arch
OSV
linux-aws-6.8 vulnerabilities
osv·2026-03-23
linux-aws-6.8 vulnerabilities
linux-aws-6.8 vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Xtensa ar
OSV
linux-realtime, linux-realtime-6.8 vulnerabilities
osv·2026-03-17
linux-realtime, linux-realtime-6.8 vulnerabilities
linux-realtime, linux-realtime-6.8 vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 arch
OSV
linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
osv·2026-03-16
linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Li
OSV
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
osv·2026-03-16
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Nios II architecture;
- PA-RISC architecture;
- RISC-V architecture;
- S390 architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
-
OSV
linux, linux-aws, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities
osv·2026-03-16
linux, linux-aws, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities
linux, linux-aws, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-oracle, linux-oracle-6.8 vulnerabilities
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- Ni
OSV
linux-intel-iotg-5.15, linux-xilinx-zynqmp vulnerabilities
osv·2026-02-19·CVSS 5.5
[MEDIUM] linux-intel-iotg-5.15, linux-xilinx-zynqmp vulnerabilities
linux-intel-iotg-5.15, linux-xilinx-zynqmp vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
-
OSV
linux-intel-iotg vulnerabilities
osv·2026-02-19·CVSS 5.5
[MEDIUM] linux-intel-iotg vulnerabilities
linux-intel-iotg vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
- Performance monitor driver
OSV
linux-nvidia vulnerabilities
osv·2026-02-17·CVSS 5.5
[MEDIUM] linux-nvidia vulnerabilities
linux-nvidia vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
- Performance monitor drivers;
-
OSV
linux-nvidia-tegra-igx vulnerabilities
osv·2026-02-17·CVSS 5.5
[MEDIUM] linux-nvidia-tegra-igx vulnerabilities
linux-nvidia-tegra-igx vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
- Performance monitor
OSV
linux-gcp-5.15, linux-kvm, linux-oracle, linux-oracle-5.15 vulnerabilities
osv·2026-02-17·CVSS 5.5
[MEDIUM] linux-gcp-5.15, linux-kvm, linux-oracle, linux-oracle-5.15 vulnerabilities
linux-gcp-5.15, linux-kvm, linux-oracle, linux-oracle-5.15 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- P
OSV
linux-aws-5.15 vulnerabilities
osv·2026-02-13·CVSS 5.5
[MEDIUM] linux-aws-5.15 vulnerabilities
linux-aws-5.15 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
- Performance monitor drivers;
OSV
linux-intel-iot-realtime, linux-realtime vulnerabilities
osv·2026-02-12·CVSS 5.5
[MEDIUM] linux-intel-iot-realtime, linux-realtime vulnerabilities
linux-intel-iot-realtime, linux-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
- Pe
OSV
linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
osv·2026-02-12·CVSS 5.5
[MEDIUM] linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
-
OSV
linux-nvidia-tegra, linux-nvidia-tegra-5.15 vulnerabilities
osv·2026-02-12·CVSS 5.5
[MEDIUM] linux-nvidia-tegra, linux-nvidia-tegra-5.15 vulnerabilities
linux-nvidia-tegra, linux-nvidia-tegra-5.15 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Transport) drivers;
- MTD block device drivers;
- Network drivers;
- NVME drivers;
- PCI subsystem;
-
OSV
linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15 vulnerabilities
osv·2026-02-12·CVSS 5.5
[MEDIUM] linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15 vulnerabilities
linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Nios II architecture;
- Sun Sparc architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bus devices;
- Hardware random number generator core;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- DMA engine subsystem;
- GPU drivers;
- HW tracing;
- Input Device (Miscellaneous) drivers;
- Multiple devices driver;
- Media drivers;
- MOST (Media Oriented Systems Trans
OSV
linux-raspi vulnerabilities
osv·2025-12-11
CVE-2025-40025 linux-raspi vulnerabilities
linux-raspi vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- Cryptographic API;
- Android drivers;
- TTY drivers;
- F2FS file system;
- 9P file system network protocol;
(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,
CVE-2025-40108, CVE-2025-40109)
OSV
linux-gcp vulnerabilities
osv·2025-12-05
CVE-2025-40025 linux-gcp vulnerabilities
linux-gcp vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- Cryptographic API;
- Android drivers;
- TTY drivers;
- F2FS file system;
- 9P file system network protocol;
(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,
CVE-2025-40108, CVE-2025-40109)
OSV
linux, linux-aws, linux-realtime vulnerabilities
osv·2025-12-03
CVE-2025-40025 linux, linux-aws, linux-realtime vulnerabilities
linux, linux-aws, linux-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- Cryptographic API;
- Android drivers;
- TTY drivers;
- F2FS file system;
- 9P file system network protocol;
(CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028,
CVE-2025-40108, CVE-2025-40109)
GHSA
GHSA-3p46-x25w-pgvh: In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
When compl
ghsa_unreviewed·2025-10-28
CVE-2025-40026 GHSA-3p46-x25w-pgvh: In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
When compl
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
When completing emulation of instruction that generated a userspace exit
for I/O, don't recheck L1 intercepts as KVM has already finished that
phase of instruction execution, i.e. has already committed to allowing L2
to perform I/O. If L1 (or host userspace) modifies the I/O permission
bitmaps during the exit to userspace, KVM will treat the access as being
intercepted despite already having emulated the I/O access.
Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation.
Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the
intended "recipient") can reach the code in question. gp_interception()'s
use is mutually ex
OSV
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
osv·2025-10-28
CVE-2025-40026 KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
When completing emulation of instruction that generated a userspace exit
for I/O, don't recheck L1 intercepts as KVM has already finished that
phase of instruction execution, i.e. has already committed to allowing L2
to perform I/O. If L1 (or host userspace) modifies the I/O permission
bitmaps during the exit to userspace, KVM will treat the access as being
intercepted despite already having emulated the I/O access.
Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation.
Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the
intended "recipient")
OSV
CVE-2025-40026: In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When complet
osv·2025-10-28
CVE-2025-40026 CVE-2025-40026: In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When complet
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O, don't recheck L1 intercepts as KVM has already finished that phase of instruction execution, i.e. has already committed to allowing L2 to perform I/O. If L1 (or host userspace) modifies the I/O permission bitmaps during the exit to userspace, KVM will treat the access as being intercepted despite already having emulated the I/O access. Pivot on EMULTYPE_NO_DECODE to detect that KVM is completing emulation. Of the three users of EMULTYPE_NO_DECODE, only complete_emulated_io() (the intended "recipient") can reach the code in question. gp_interception()'s use is mutually exclu
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/00338255bb1f422642fb2798ebe92e93b6e4209bhttps://git.kernel.org/stable/c/3a062a5c55adc5507600b9ae6d911e247e2f1d6ehttps://git.kernel.org/stable/c/3d3abf3f7e8b1abb082070a343de82d7efc80523https://git.kernel.org/stable/c/7366830642505683bbe905a2ba5d18d6e4b512b8https://git.kernel.org/stable/c/a908eca437789589dd4624da428614c1275064dchttps://git.kernel.org/stable/c/ba35a5d775799ce5ad60230be97336f2fefd518ehttps://git.kernel.org/stable/c/e0ce3ed1048a47986d15aef1a98ebda25560d257https://git.kernel.org/stable/c/e7177c7e32cb806f348387b7f4faafd4a5b32054https://git.kernel.org/stable/c/e750f85391286a4c8100275516973324b621a269
2025-10-28
Published