{"id":"CVE-2026-74646","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74646","summary":"misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: take fl->lock when moving mmaps on interrupted invoke\n\nWhen an invoke is interrupted by a signal,\nwait_for_completion_interruptible() returns -ERESTARTSYS and\nfastrpc_internal_invoke() moves every buffer from fl->mmaps onto\ncctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk\nruns without holding fl->lock, the lock that serialises fl->mmaps in\nfastrpc_req_mmap() and fastrpc_req_munmap() everywhere else.\n\nTake fl->lock around the move, matching every other fl->mmaps accessor.","published":"2026-08-22T15:32:23.378Z","modified":"2026-08-24T11:47:18.947015451Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.152"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3f265e405e5ef85030c3777262e18bb556bc8724"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a902fe1f80f58a2335b6be1131866f827ec44d1a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/af6345159abcbaa550518f31990d2a9558c2d369"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b85a0e91d7d6cd06a53c881a46f749cfcef416a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/efd02f8d1a7449f15809bc18d3cd41aafea75d7e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74646.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74646"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-24T11:47:18.947015451Z"}}