CVE-2026-80958dm-pcache: clamp the tail kset read to the segment data region
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: clamp the tail kset read to the segment data region The tail-kset read in cache_replay(), the writeback worker and the GC worker bounds its length by PCACHE_SEG_SIZE - seg_off, the raw segment size rather than the data region. A tail near the segment end reads past the segment data into the following control area. Clamp the read to cache_seg_remain(), the data region.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before 2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c; 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 builds before 1ab55354368d071ebaee4d8c82313955eab65a04; from 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 before becf07e2b0053027495ecd671b1f82fb2e615f68 | CNA record |
References
- https://git.kernel.org/stable/c/2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c
- https://git.kernel.org/stable/c/1ab55354368d071ebaee4d8c82313955eab65a04
- https://git.kernel.org/stable/c/becf07e2b0053027495ecd671b1f82fb2e615f68
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.