{"id":"CVE-2026-89522","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89522","summary":"media: staging/ipu7: fix async notifier UAF on probe error path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: staging/ipu7: fix async notifier UAF on probe error path\n\nisys_register_devices() registers the V4L2 async notifier via\nisys_notifier_init(). If a subsequent probe step such as\nisys_fw_log_init() fails, isys_probe() jumps to the out_cleanup label\nwhich only calls isys_unregister_devices(). That helper tears down the\nvideo devices, subdevices, V4L2 device and media device, but never\nunregisters or cleans up the async notifier.\n\nAs a result the notifier stays chained in the global notifier_list while\nthe enclosing struct ipu7_isys is freed by devres, leading to list\ncorruption and a use-after-free the next time the list is walked.\n\nThe remove path already does the right thing by calling\nisys_notifier_cleanup() before isys_unregister_devices(). Mirror that on\nthe probe error path so the notifier is unregistered and cleaned up\nbefore the device is torn down.","published":"2026-09-11T19:44:04.052Z","modified":"2026-09-14T03:46:10.852373505Z","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":"6.18.50"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2a8dd9fd12f3f6b21207cec8f50c92cd428e6b81"},{"type":"WEB","url":"https://git.kernel.org/stable/c/323c411fb63122e8cef5b833032d69d59a838559"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d7f48aa7d60c65d3e6d5312c27f17d5525a245fb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89522.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89522"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:46:10.852373505Z"}}