CVE-2026-80959
dm-pcache: bound the persisted tail-position offset
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: dm-pcache: bound the persisted tail-position offset cache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from the cache device and addresses within the segment with it. A seg_off at or past the segment data_size, controllable by whoever supplies the device (CAP_SYS_ADMIN), reads past the segment data. Reject a decoded seg_off that is not below the segment data_size.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < ffd9a214a94f9928e54856f42b1cc3e33fb10e36 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < 8bf7a06ca3c1611809725f58cfd573f2ffbda75f 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < d1898576090a10d2ac2715218a652e78fb65a6b0
Linux / Linux
6.18