{"identifier":"CVE-2026-99230","cve":{"id":"CVE-2026-99230","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/cmd: don't leave list poison in ->hash_node\n\nio_uring_cmd_del_cancelable() uses hlist_del() to take a command off\n->cancelable_uring_cmd, which leaves LIST_POISON1/2 behind in\n->hash_node. Requests are recycled through the request cache without\nbeing reinitialised, and not every user of ->hash_node sets it up before\nit is used:\n\nIf a vectored futex wait is woken while futex_wait_multiple_setup() is\nstill queueing the futexes, io_futexv_wait() doesn't add the request to\n->futex_list, and leaves the completion to the task_work queued by the\nwake up. io_futexv_complete() ends in __io_futex_complete(), whose\nhlist_del_init() is fine for a request that is unhashed, which is how all\nother users of the node leave it. If the request was a cancelable\nuring_cmd in its previous life, e.g. a ublk FETCH_REQ, it writes through\nLIST_POISON2:\n\n  Oops: general protection fault, probably for non-canonical address\n  KASAN: maybe wild-memory-access in range [0xdead000000000120-...]\n  RIP: 0010:io_futexv_complete+0x219/0x420\n  Call Trace:\n   tctx_task_work_run+0x804/0x950\n   tctx_task_work+0x71/0xa0\n   task_work_run+0x118/0x200\n\nLeave the node unhashed.","published":"2026-11-02T16:17:47.927000+00:00","modified":"2026-11-02T16:17:47.927000+00:00","status":"Received","score":null,"severity":"UNSCORED","vector":"","cvss_version":"","affected":[],"weaknesses":[],"references":[{"url":"https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"kev":null,"kev_checked":true,"metrics":{},"configurations":[],"source":"nvd","retrieved_at":"2026-11-02T19:29:44.850148+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence.","Fresh EPSS data is unavailable; missing values are not zero."]},"epss":null,"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"git.kernel.org","source_url":"https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707","investigate_url":"https://investigate.aeglixmind.com/#git.kernel.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-99230","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-99230","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-99230","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}