🛡️ CVE-2022-48996 — kernel

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

Description

mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()

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

mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()

Commit da87878010e5 ("mm/damon/sysfs: support online inputs update") made

'damon_sysfs_set_schemes()' to be called for running DAMON context, which

could have schemes. In the case, DAMON sysfs interface is supposed to

update, remove, or add schemes to reflect the sysfs files. However, the

code is assuming the DAMON context wouldn't have schemes at all, and

therefore creates and adds new schemes. As a result, the code doesn't

work as intended for online schemes tuning and could have more than

expected memory footprint. The schemes are all in the DAMON context, so

it doesn't leak the memory, though.

Remove the wrong asssumption (the DAMON context wouldn't have schemes) in

'damon_sysfs_set_schemes()' to fix the bug.

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-2022-48996 is recorded against 2 packages.

  • kernel (from 5.19.0 up to 6.0.12)
  • linux-kernel

Timeline and source

Published on 21 October 2024 and last revised on 15 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 (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2022-48996 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 2024-10-21
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 5.19.0 6.0.12
linux-kernel — —

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