{"cve":"CVE-2026-80757","nvd":{"published":"2026-09-03T13:06:15.493","modified":"2026-09-03T13:06:15.493","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: reject a class permission count below its inherited common\n\nsecurity_get_permissions() maps an inherited common's permissions into\nan array sized by the class's own permissions.nprim, but class_read()\ntakes that nprim verbatim from the policy image and never checks that it\ncovers the common.  A class that inherits a common of N permissions while\ndeclaring a smaller nprim is accepted, and on load the common's\npermissions are written past the class-sized array -- an out-of-bounds\nheap write.\n\nReject a class whose permission count is below its inherited common's.\nWell-formed policies, where the class count already includes the\ninherited permissions, are unaffected.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/1b995966c3ae5244751bdaee9bfe7e17567d4fbe","https://git.kernel.org/stable/c/2002ff745db64ac83ee1bb9ff78196d2d68bfdb3","https://git.kernel.org/stable/c/2b7ffd7921fcbfe408fb7b372e47454e45b1e6a7","https://git.kernel.org/stable/c/38d91446630a20ce8c2a981810deea81fd61a3b5","https://git.kernel.org/stable/c/638213f2e6ea52c06a25861616781338d154db35"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-80757","score":0.00165,"percentile":0.05661,"date":"2026-10-31"},"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."]}