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🛡️ CVE-2025-37952 — kernel

🟠 CVSS 8.8 — High ✅ No Known Exploit NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

ksmbd: Fix UAF in __close_file_table_ids

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: Fix UAF in __close_file_table_ids

A use-after-free is possible if one thread destroys the file

via __ksmbd_close_fd while another thread holds a reference to

it. The existing checks on fp->refcount are not sufficient to

prevent this.

The fix takes ft->lock around the section which removes the

file from the file table. This prevents two threads acquiring the

same file pointer via __close_file_table_ids, as well as the other

functions which retrieve a file from the IDR and which already use

this same lock.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2025-37952 is recorded against 2 packages.

  • kernel (from 6.13.0 up to 6.14.7)
  • linux-kernel

Timeline and source

Published on 20 May 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2025-37952 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-05-20
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.13.0 6.14.7
linux-kernel — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.