{"id":"CVE-2026-80713","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80713","summary":"io_uring: preserve task restrictions across exec","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: preserve task restrictions across exec\n\nPer-task restrictions apply to all rings created by a task. Once\ninstalled, they should not be dropped across exec.\n\nFor a task that has used io_uring, the exec cancellation path calls\n__io_uring_free(). This frees both the task context and the per-task\nrestriction, so a ring created after exec is unrestricted.\n\nSplit task context cleanup into io_uring_free_tctx(), and use it from\nthe exec cancellation path. Keep __io_uring_free() for final task\ncleanup, where both the context and restriction are released.","published":"2026-08-28T06:53:12.438Z","modified":"2026-08-30T03:48:21.432905306Z","cvss":{"score":8.4,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.1.8"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/bc0e8faf90e776a2f1f3967a04e8091e6bdb4977"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fcef9325afeecced693a7438e975e4a3f8e2716f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80713.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80713"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-30T03:48:21.432905306Z"}}