{"id":"CVE-2026-72181","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72181","summary":"mips: sched: Fix CPUMASK_OFFSTACK memory corruption","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmips: sched: Fix CPUMASK_OFFSTACK memory corruption\n\nThis patch addresses a critical memory management flaw. When\nCONFIG_CPUMASK_OFFSTACK is enabled, cpumask_var_t is a pointer.\nConsequently, sizeof(new_mask) evaluates to the pointer size, causing\ncopy_from_user() to clobber the mask pointer. Furthermore, the old\nlogic performed copy_from_user() before allocating the mask.\n\nFix this by allocating new_mask first. To handle variable-sized user\nmasks correctly, use cpumask_size() to truncate overly large user masks\nor pad undersized masks with zeros before copying the data directly into\nthe allocated buffer.","published":"2026-08-15T05:53:44.453Z","modified":"2026-08-18T03:56:21.749745980Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.15.212"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/15ba8053fe4162c933855f1676fb321cdb6251c7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1caee6e084a96ada94658f261ced377d85af3f03"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3446ffb5d03c36f9ce88ede7ca5be319a2968d96"},{"type":"WEB","url":"https://git.kernel.org/stable/c/87a56c1e8e36d06ebe8640432f911538ded7827d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/98e37db4a34d3af3fb2f4648295c25b5e40b20e3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1dd41d00c57efb1fbc6f361c5f48c9d00cca51c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d20ee42f8226607b5693b2bc2f115ca2d270221a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72181.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72181"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:21.749745980Z"}}