CVE-2026-98867
In the Linux kernel, the following vulnerability has been resolved: dm-pcache: bound the logical key offset from persistent memory cache_key_decode() takes a key's logical off from the cache device and later indexes req_key_tree->subtrees[] by it in get_subtree(). An off past the device forms a subtree pointer outside the array, which rb_insert() writes through during replay. Reject a key of zero length, or whose off+len (computed in 64 bits) exceeds the device size, before it is used.
Affected versions
Linux kernel versions
6.18
and later are affected. Fixed in
6.18.52,
7.2.10,
7.3
and their respective stable series.
References
3 totalFrequently asked questions
-
What is CVE-2026-98867?
CVE-2026-98867 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.52, 7.2.10 and 7.3. CVE-2026-98867 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-98867?
Yes. CVE-2026-98867 has been patched. Fixed versions include 6.18.52, 7.2.10 and 7.3. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-98867 actively exploited?
No. CVE-2026-98867 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.