{"cve":"CVE-2026-80959","nvd":{"published":"2026-09-11T20:19:01.750","modified":"2026-10-19T09:17:27.390","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: bound the persisted tail-position offset\n\ncache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from\nthe cache device and addresses within the segment with it. A seg_off at or\npast the segment data_size, controllable by whoever supplies the device\n(CAP_SYS_ADMIN), reads past the segment data.\n\nReject a decoded seg_off that is not below the segment data_size.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f","https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0","https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-80959","score":0.00173,"percentile":0.06726,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}