Skip to main content
VulnerabilityPublished Updated

CVE-2026-43168: Linux kernel · ocfs2: fix reflink preserve cleanup issue

Affects Linux kernelSource CVE Database V5

0
Compare

Not known to be exploited · fixed in c44d86ca949cb1e5566ad14510cc26fa1a17e2d8 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:51 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in c44d86ca949cb1e5566ad14510cc26fa1a17e2d8, bb273b68c1719c2925e05557f7e7099edb066680, b2952dbeac2c3c527cb0519d5ffaeb95b062466a +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 0fe9b66c65f3ff227da45381afe7612f91e32740, < c44d86ca949cb1e5566ad14510cc26fa1a17e2d8
Fixed in
  • c44d86ca949cb1e5566ad14510cc26fa1a17e2d8
LinuxLinuxAffected
  • ≥ 0fe9b66c65f3ff227da45381afe7612f91e32740, < bb273b68c1719c2925e05557f7e7099edb066680
Fixed in
  • bb273b68c1719c2925e05557f7e7099edb066680
LinuxLinuxAffected
  • ≥ 0fe9b66c65f3ff227da45381afe7612f91e32740, < b2952dbeac2c3c527cb0519d5ffaeb95b062466a
Fixed in
  • b2952dbeac2c3c527cb0519d5ffaeb95b062466a
LinuxLinuxAffected
  • ≥ 0fe9b66c65f3ff227da45381afe7612f91e32740, < 5138c936c2c82c9be8883921854bc6f7e1177d8c
Fixed in
  • 5138c936c2c82c9be8883921854bc6f7e1177d8c
LinuxLinuxAffected
  • ≥ 0fe9b66c65f3ff227da45381afe7612f91e32740, < 8ff329353134280b203cb2bce95311cb8f7cbd8a
Fixed in
  • 8ff329353134280b203cb2bce95311cb8f7cbd8a
LinuxLinuxAffected
  • ≥ 0fe9b66c65f3ff227da45381afe7612f91e32740, < 3bdc3766aafb052aef4baadef455a84c1c0a059d
Fixed in
  • 3bdc3766aafb052aef4baadef455a84c1c0a059d

AI-suggested

This vulnerability has been fixed in several Linux kernel commits identified by their hashes. Users should update their Linux kernel to a version that includes these fixes to remediate the issue. Since this is a kernel-level fix, applying the updated kernel version is the recommended mitigation.

Description

A vulnerability in the Linux kernel's ocfs2 filesystem component related to reflink preserve cleanup has been fixed. The issue involved improper handling of cleanup for preserved extended attribute (xattr) entries, specifically failing to shift the 'last' pointer correctly and not cleaning up the first entry when the count was one. This bug was addressed in multiple fixed commits.

References

Community reviews

Loading reviews…