CVE-2025-21945

HIGH

Linux Kernel 5.15-6.1.130, 6.2.0-6.6.82, 6.7.0-6.12.18, 6.13.0-6.13.6 - Use-After-Free in SMB2 Lock Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.

References (6)

Core 6

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Patch

https://git.kernel.org/stable/c/410ce35a2ed6d0e114132bba29af49b69880c8c7

Patch

https://git.kernel.org/stable/c/8573571060ca466cbef2c6f03306b2cc7b883506

Patch

https://git.kernel.org/stable/c/a0609097fd10d618aed4864038393dd75131289e

Patch

https://git.kernel.org/stable/c/636e021646cf9b52ddfea7c809b018e91f2188cb

Patch

https://git.kernel.org/stable/c/84d2d1641b71dec326e8736a749b7ee76a9599fc

Scores

CVSS v3 7.8

EPSS 0.0018

EPSS Percentile 7.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-416

Status published

Products (18)

linux/Kernel 5.15.0 - 6.1.131linux

linux/Kernel 6.13.0 - 6.13.7linux

linux/Kernel 6.2.0 - 6.6.83linux

linux/Kernel 6.7.0 - 6.12.19linux

Linux/Linux < 5.15

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 410ce35a2ed6d0e114132bba29af49b69880c8c7

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 636e021646cf9b52ddfea7c809b018e91f2188cb

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 84d2d1641b71dec326e8736a749b7ee76a9599fc

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 8573571060ca466cbef2c6f03306b2cc7b883506

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - a0609097fd10d618aed4864038393dd75131289e

... and 8 more

Published Apr 01, 2025

Tracked Since Feb 18, 2026