CVE-2025-22074

MEDIUM

Linux Kernel - Denial of Service via r_count Mismatch in ksmbd

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix r_count dec/increment mismatch r_count is only increased when there is an oplock break wait, so r_count inc/decrement are not paired. This can cause r_count to become negative, which can lead to a problem where the ksmbd thread does not terminate.

References (5)

Core 5

Core References

Patch

https://git.kernel.org/stable/c/4790bcb269e5d6d88200a67c54ae6d627332a3be

Patch

https://git.kernel.org/stable/c/457db486203c90e10c3efc87fd45cc7000b1cd36

Patch

https://git.kernel.org/stable/c/20378cf48359f39dee0ef9b61470ebe77bd49c0d

Patch

https://git.kernel.org/stable/c/c2ec33d46b4d1c8085dab5d02e00b21f4f0fb8a9

Patch

https://git.kernel.org/stable/c/ddb7ea36ba7129c2ed107e2186591128618864e1

Scores

CVSS v3 5.5

EPSS 0.0019

EPSS Percentile 8.7%

Attack Vector LOCAL

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

Details

Status published

Products (22)

linux/Kernel < 6.6.87linux

linux/Kernel 6.13.0 - 6.13.11linux

linux/Kernel 6.14.0 - 6.14.2linux

linux/Kernel 6.7.0 - 6.12.23linux

Linux/Linux < 6.14

Linux/Linux 09aeab68033161cb54f194da93e51a11aee6144b - 4790bcb269e5d6d88200a67c54ae6d627332a3be

Linux/Linux 3aa660c059240e0c795217182cf7df32909dd917 - c2ec33d46b4d1c8085dab5d02e00b21f4f0fb8a9

Linux/Linux 3aa660c059240e0c795217182cf7df32909dd917 - ddb7ea36ba7129c2ed107e2186591128618864e1

Linux/Linux 6.12.20 - 6.12.23

Linux/Linux 6.12.23 - 6.12.*

... and 12 more

Published Apr 16, 2025

Tracked Since Feb 18, 2026