🛡️ CVE-2022-48938 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CDC-NCM: avoid overflow in sanity checking

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

CDC-NCM: avoid overflow in sanity checking

A broken device may give an extreme offset like 0xFFF0

and a reasonable length for a fragment. In the sanity

check as formulated now, this will create an integer

overflow, defeating the sanity check. Both offset

and offset + len need to be checked in such a manner

that no overflow can occur.

And those quantities should be unsigned.

How this vulnerability can be exploited

This issue can be reached with local access to the system, 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 none, integrity none, availability high.

Affected software

CVE-2022-48938 is recorded against 2 packages.

  • kernel (from 5.11.0 up to 5.16.12)
  • linux-kernel (from 5.16 up to 5.16.12)

Timeline and source

Published on 22 August 2024 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)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2022-48938 on other distributions

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

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-08-22
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 5.11.0 5.16.12
linux-kernel 5.16 5.16.12

Similar Threats

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