CVE-2026-80959dm-pcache: bound the persisted tail-position offset
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before ffd9a214a94f9928e54856f42b1cc3e33fb10e36; from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before 8bf7a06ca3c1611809725f58cfd573f2ffbda75f; from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before d1898576090a10d2ac2715218a652e78fb65a6b0 | CNA record |
References
- https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36
- https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f
- https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.