CVE-2026-80957
Unknown
Description
In the Linux kernel, the following vulnerability has been resolved: dm-pcache: detect a cycle in the last-kset chain during replay cache_replay() follows the on-media last-kset chain by next_cache_seg_id with no cond_resched(). A forged chain that points back into a segment it has already visited makes the replay loop follow it forever. Cap the last-kset hops at cache->n_segs; a valid chain visits each segment at most once.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 11, 2026
First seenSep 11, 2026
How to fix
Update
- Linux Linux663ee2f3824a505b983162de44134e789f8230da, 5311dfc5cd70edccd110257e3f30b2c1dcd3768d, 16c3b3a326e70f246a605b3dc27b7f83ba4743e3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 ≤ v < 663ee2f3824a505b983162de44134e789f8230da, 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 ≤ v < 5311dfc5cd70edccd110257e3f30b2c1dcd3768d, 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 ≤ v < 16c3b3a326e70f246a605b3dc27b7f83ba4743e3, 6.18 | 663ee2f3824a505b983162de44134e789f8230da, 5311dfc5cd70edccd110257e3f30b2c1dcd3768d, 16c3b3a326e70f246a605b3dc27b7f83ba4743e3 |
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