CVE-2026-80958High· 7.1▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 5.1
none → medium
— → 7.1
none → high
7.1 → 5.1
high → medium
7.1 → 5.1
high → medium
5.1 → 5.5
Last analysed / modified upstream
5.5 → 7.1
medium → high
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.
Linux >= 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < 2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500cLinux >= 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < 1ab55354368d071ebaee4d8c82313955eab65a04Linux >= 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < becf07e2b0053027495ecd671b1f82fb2e615f68Linux 6.18Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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