CVE-2026-80959
- Source
- https://cve.org/CVERecord?id=CVE-2026-80959
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80959.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-80959
- Downstream
- Published
- 2026-09-11T19:42:26Z
- Modified
- 2026-09-15T03:31:04Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- dm-pcache: bound the persisted tail-position offset
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80959.json" }- References
-
- https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f
- https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0
- https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80959.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-80959
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git