Description
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.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0, < 2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c; >= 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0, < 1ab55354368d071ebaee4d8c82313955eab65a04; >= 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0, < becf07e2b0053027495ecd671b1f82fb2e615f68 |
| Linux | Linux | 6.18 |
References
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received