CVE-2026-43168
ocfs2: fix reflink preserve cleanup issue
Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix reflink preserve cleanup issue commit c06c303832ec ("ocfs2: fix xattr array entry __counted_by error") doesn't handle all cases and the cleanup job for preserved xattr entries still has bug: - the 'last' pointer should be shifted by one unit after cleanup an array entry. - current code logic doesn't cleanup the first entry when xh_count is 1. Note, commit c06c303832ec is also a bug fix for 0fe9b66c65f3.
INFO
Published Date :
May 6, 2026, 12:16 p.m.
Last Modified :
May 6, 2026, 1:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to include the ocfs2 fix.
- Apply the relevant patch to the ocfs2 module.
- Ensure xattr cleanup logic handles all array entry cases.
- Verify pointer shifting after array entry cleanup.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43168.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43168 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43168
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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CVE-2026-43168 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43168 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 06, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix reflink preserve cleanup issue commit c06c303832ec ("ocfs2: fix xattr array entry __counted_by error") doesn't handle all cases and the cleanup job for preserved xattr entries still has bug: - the 'last' pointer should be shifted by one unit after cleanup an array entry. - current code logic doesn't cleanup the first entry when xh_count is 1. Note, commit c06c303832ec is also a bug fix for 0fe9b66c65f3. Added Reference https://git.kernel.org/stable/c/02acc9f72365e50eb45a56b7dacb9114ca3b503c Added Reference https://git.kernel.org/stable/c/2f4daccd9d9b8b2952df7878df8c2e8ba6439398 Added Reference https://git.kernel.org/stable/c/3bdc3766aafb052aef4baadef455a84c1c0a059d Added Reference https://git.kernel.org/stable/c/5138c936c2c82c9be8883921854bc6f7e1177d8c Added Reference https://git.kernel.org/stable/c/8ff329353134280b203cb2bce95311cb8f7cbd8a Added Reference https://git.kernel.org/stable/c/b2952dbeac2c3c527cb0519d5ffaeb95b062466a Added Reference https://git.kernel.org/stable/c/bb273b68c1719c2925e05557f7e7099edb066680 Added Reference https://git.kernel.org/stable/c/c44d86ca949cb1e5566ad14510cc26fa1a17e2d8