CVE-2026-31436
published 2026-04-22CVE-2026-31436: In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() At the end…
PriorityP349critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.46%
37.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
At the end of this function, d is the traversal cursor of flist, but the
code completes found instead. This can lead to issues such as NULL pointer
dereferences, double completion, or descriptor leaks.
Fix this by completing d instead of found in the final
list_for_each_entry_safe() loop.
Affected
46 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < e21da2ad8844585040fe4b82be1ad2fe99d40074 | e21da2ad8844585040fe4b82be1ad2fe99d40074 |
| linux | linux | >= aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < 82656e8daf8de00935ae91b91bed43f4d6e0d644 | 82656e8daf8de00935ae91b91bed43f4d6e0d644 |
| linux | linux | >= aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < 0e4f43779d550e559be13a5cdb763bad92c4cc99 | 0e4f43779d550e559be13a5cdb763bad92c4cc99 |
| linux | linux | >= aa8d18becc0c14aa3eb46d6d1b81450446e11b87 < e1c9866173c5f8521f2d0768547a01508cb9ff27 | e1c9866173c5f8521f2d0768547a01508cb9ff27 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 6.13 < 6.18.21 | 6.18.21 |
| linux | linux_kernel | >= 6.19 < 6.19.11 | 6.19.11 |
| linux | linux_kernel | >= 6.8 < 6.12.80 | 6.12.80 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-6.8 | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-azure | — | — |
| ubuntu | linux-azure-6.17 | — | — |
| ubuntu | linux-azure-6.8 | — | — |
| ubuntu | linux-azure-fde | — | — |
| ubuntu | linux-azure-fde-6.17 | — | — |
| ubuntu | linux-azure-fde-6.8 | — | — |
| ubuntu | linux-azure-fips | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp | — | — |
| ubuntu | linux-gcp-6.8 | — | — |
| ubuntu | linux-gcp-fips | — | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_ubuntu8.8HIGH
vendor_redhat7.0MEDIUM
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This update corrects flaws in the following subsystems:
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- x86 architecture;
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- Cryptographic API;
- Drivers core;
- Null block device driver;
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- GPIO subsystem;
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CVE-2026-43129 [LOW] Linux kernel (Azure CVM) vulnerabilities
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Summary: Several security issues were fixed in the Linux kernel.
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attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
It was discovered that some AMD Zen 5 processors supporting RDSEED
instruction did not properly handle entropy, potentially resulting in the
consumption of insufficiently random values. A l
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Title: Linux kernel (Azure) vulnerabilities
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It was discovered that some AMD processors did not properly clear data in
the floating point divider unit during speculative execution. A local
attacker could use this to expose sensitive information. (CVE-2025-54505)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
It was discovered that some AMD Zen 5 processors supporting RDSEED
instruction did not properly handle entropy, potentially resulting in the
consumption of insufficiently random values. A local
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- NVME drivers;
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An attacker could possibly use these to compromise the system.
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- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
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- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
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An attacker could possibly use these to compromise the system.
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- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
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- Hardware crypto device drivers;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
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- GPU drivers;
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An attacker could possibly use these to compromise the system.
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- Cryptographic API;
- DMA engine subsystem;
- GPU drivers;
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- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
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- Network file system (NFS) server daemon;
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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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
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- GPIO subsystem;
- GPU drivers;
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container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
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It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
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CVE-2026-43314 Linux kernel (NVIDIA Tegra) vulnerabilities
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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;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardwar
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vendor_ubuntu·2026-07-01
CVE-2026-43226 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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring dr
Ubuntu
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vendor_ubuntu·2026-07-01·CVSS 7.1
CVE-2026-43304 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) 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:
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-07-01·CVSS 7.1
CVE-2026-43304 [HIGH] 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:
- ARM64 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshing protocol;
- Ethernet br
Red Hat
kernel: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
vendor_redhat·2026-04-22·CVSS 7.0
CVE-2026-31436 [MEDIUM] CWE-910 kernel: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
kernel: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
A flaw was found in the Linux kernel's dmaengine subsystem, specifically within the idxd driver. This vulnerability occurs due to incorrect descriptor completion in the `llist_abort_desc()` function. This can lead to issues such as NULL pointer dereferences, double completion, or descriptor leaks, which can result in a denial of service.
Package: kernel (Red Hat Enterprise Linux 10) - Affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
P
VulDB
Linux Kernel up to 6.12.79/6.18.20/6.19.10 dmaengine llist_abort_desc null pointer dereference (WID-SEC-2026-1252)
vuldb·2026-04-23
CVE-2026-31436 [CRITICAL] Linux Kernel up to 6.12.79/6.18.20/6.19.10 dmaengine llist_abort_desc null pointer dereference (WID-SEC-2026-1252)
A vulnerability identified as critical has been detected in Linux Kernel up to 6.12.79/6.18.20/6.19.10. This issue affects the function llist_abort_desc of the component dmaengine. Performing a manipulation results in null pointer dereference.
This vulnerability is reported as CVE-2026-31436. The attacker must have access to the local network to execute the attack. No exploit exists.
You should upgrade the affected component.
GHSA
GHSA-j9j9-688w-mvpv: In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
ghsa_unreviewed·2026-04-22
CVE-2026-31436 GHSA-j9j9-688w-mvpv: In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
At the end of this function, d is the traversal cursor of flist, but the
code completes found instead. This can lead to issues such as NULL pointer
dereferences, double completion, or descriptor leaks.
Fix this by completing d instead of found in the final
list_for_each_entry_safe() loop.
No detection rules found.
No public exploits indexed.
2026-04-22
Published