CVE-2025-37776
published 2025-05-01CVE-2025-37776: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in…
PriorityP429high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.33%
25.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
There is a room in smb_break_all_levII_oplock that can cause racy issues
when unlocking in the middle of the loop. This patch use read lock
to protect whole loop.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.12.25-1 (forky) | linux 6.12.25-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 296cb5457cc6f4a754c4ae29855f8a253d52bcc6 | 296cb5457cc6f4a754c4ae29855f8a253d52bcc6 |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < d54ab1520d43e95f9b2e22d7a05fc9614192e5a5 | d54ab1520d43e95f9b2e22d7a05fc9614192e5a5 |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < d73686367ad68534257cd88a36ca3c52cb8b81d8 | d73686367ad68534257cd88a36ca3c52cb8b81d8 |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 18b4fac5ef17f77fed9417d22210ceafd6525fc7 | 18b4fac5ef17f77fed9417d22210ceafd6525fc7 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.12.25-1 | 6.12.25-1 |
| linux | linux_kernel | >= 0 < 6.12.25-1 | 6.12.25-1 |
| linux | linux_kernel | >= 0 < 6.14.0-22.22 | 6.14.0-22.22 |
| linux | linux_kernel | >= 5.15 < 6.6.88 | 6.6.88 |
| linux | linux_kernel | >= 6.13 < 6.14.4 | 6.14.4 |
| linux | linux_kernel | >= 6.7 < 6.12.25 | 6.12.25 |
| msrc | azl3_kernel_6.6.85.1-4_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.92.2-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.0HIGH
vendor_debian7.0HIGH
vendor_redhat7.0HIGH
vendor_msrc5.5MEDIUM
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OSV
linux-aws, linux-oracle vulnerabilities
osv·2025-07-08
linux-aws, linux-oracle vulnerabilities
linux-aws, linux-oracle 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:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
OSV
linux-azure vulnerabilities
osv·2025-06-26
linux-azure vulnerabilities
linux-azure 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:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
- I3C subsys
OSV
linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities
osv·2025-06-24
linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities
linux, linux-gcp, linux-raspi, 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:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- HSI subsys
GHSA
GHSA-68wc-qrqf-rfh5: In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
There is a room in smb
ghsa_unreviewed·2025-05-01
CVE-2025-37776 [HIGH] CWE-416 GHSA-68wc-qrqf-rfh5: In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
There is a room in smb
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
There is a room in smb_break_all_levII_oplock that can cause racy issues
when unlocking in the middle of the loop. This patch use read lock
to protect whole loop.
OSV
CVE-2025-37776: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_b
osv·2025-05-01·CVSS 7.0
CVE-2025-37776 [HIGH] CVE-2025-37776: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_b
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-07-08
CVE-2025-23150 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:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- GP
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-06-26
CVE-2025-23131 Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) 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:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsyst
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-06-24
CVE-2025-23152 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:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- GP
Microsoft
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
vendor_msrc·2025-05-13·CVSS 5.5
CVE-2025-37776 [HIGH] ksmbd: fix use-after-free in smb_break_all_levII_oplock()
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
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
Remediation: CBL-Mariner Releases
Reference: https://lea
Red Hat
kernel: ksmbd: fix use-after-free in smb_break_all_levII_oplock()
vendor_redhat·2025-05-01·CVSS 7.0
CVE-2025-37776 [HIGH] kernel: ksmbd: fix use-after-free in smb_break_all_levII_oplock()
kernel: ksmbd: fix use-after-free in smb_break_all_levII_oplock()
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
There is a room in smb_break_all_levII_oplock that can cause racy issues
when unlocking in the middle of the loop. This patch use read lock
to protect whole loop.
Package: kernel (Red Hat Enterprise Linux 10) - Not 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
Package: kernel (Red Hat Enterprise Linux 9) - Not affected
Package:
Debian
CVE-2025-37776: linux - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix ...
vendor_debian·2025·CVSS 7.0
CVE-2025-37776 [HIGH] CVE-2025-37776: linux - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix ...
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.
Scope: local
bookworm: open
bullseye: resolved
forky: resolved (fixed in 6.12.25-1)
sid: resolved (fixed in 6.12.25-1)
trixie: resolved (fixed in 6.12.25-1)
No detection rules found.
No public exploits indexed.
2025-05-01
Published