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🛡️ CVE-2025-38437 — debian-linux

🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-416 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

ksmbd: fix potential use-after-free in oplock/lease break ack

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

ksmbd: fix potential use-after-free in oplock/lease break ack

If ksmbd_iov_pin_rsp return error, use-after-free can happen by

accessing opinfo->state and opinfo_put and ksmbd_fd_put could

called twice.

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.

Weakness class

CVE-2025-38437 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.

Affected software

CVE-2025-38437 is recorded against 3 packages.

  • debian-linux
  • kernel (from 6.13.0 up to 6.15.7)
  • linux-kernel

Timeline and source

Published on 25 July 2025 and last revised on 30 July 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
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
lists.debian.org

CVE-2025-38437 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 CWE-416
Public Exploit ✅ No
Source NVD
Published 2025-07-25
Updated 2026-08-20
Modified 2026-07-30

Affected Packages

Software From version Fixed in
debian-linux — —
kernel 6.13.0 6.15.7
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.