CVE-2025-22074: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.6.84 — 6.6.87
linux	linux_kernel	6.12.20 — 6.12.23
linux	linux_kernel	6.13.8 — 6.13.11
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/20378cf48359f39dee0ef9b61470ebe77bd49c0d https://git.kernel.org/stable/c/457db486203c90e10c3efc87fd45cc7000b1cd36 https://git.kernel.org/stable/c/4790bcb269e5d6d88200a67c54ae6d627332a3be https://git.kernel.org/stable/c/c2ec33d46b4d1c8085dab5d02e00b21f4f0fb8a9 https://git.kernel.org/stable/c/ddb7ea36ba7129c2ed107e2186591128618864e1

Frequently Asked Questions

What is CVE-2025-22074? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-22074? +

CVE-2025-22074 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-22074? +

CVE-2025-22074 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-22074? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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