{"id":"CVE-2026-89741","title":"kernel: Revert \"media: v4l2-dev: fix error handling in __video_register_device()\" (CVE-2026-89741)","summary":"A flaw was found in the Linux kernel's media subsystem, specifically within the v4l2-dev component. This vulnerability arises from incorrect error handling in the `__video_register_device()` function. If a device registration fails, the sy…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-1341","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9"],"published":"2026-09-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T14:15:15+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89741.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89741.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89741"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532384"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89741"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89741"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89741.mbox"},{"url":"https://git.kernel.org/stable/c/8b998c171ed875e402e1fd1c5cd619e4ca05e9c1"},{"url":"https://git.kernel.org/stable/c/3de14b4f681a1b3c6d375d98d9d37a55ebb85349"},{"url":"https://git.kernel.org/stable/c/8027f82c0f5474ed72448e160ee9778051fa1f49"},{"url":"https://git.kernel.org/stable/c/2ac009a65d2385e9f0799eaf9d9694a29153a161"},{"url":"https://git.kernel.org/stable/c/712ca1cf756de2557a116e0df55791bac0c9f99e"},{"url":"https://git.kernel.org/stable/c/aad08b5f67d2a8116e1a00bce2611c1513b10bce"},{"url":"https://git.kernel.org/stable/c/ce792b94e03882108019ba996c1a7c4d4e09be2c"},{"url":"https://git.kernel.org/stable/c/e7600f5cee5de14065f950807931d6e6d40fb2d7"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00164,"epssPercentile":0.06017,"scores":{"vendor":7,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.449Z","slug":"CVE-2026-89741","body":"## Overview\n\nA flaw was found in the Linux kernel's media subsystem, specifically within the v4l2-dev component. This vulnerability arises from incorrect error handling in the `__video_register_device()` function. If a device registration fails, the system attempts to free the same memory region twice, leading to a double-free condition. This type of flaw can result in system instability, memory corruption, or a denial of service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89741.json)\n\n**kernel: Revert \"media: v4l2-dev: fix error handling in __video_register_device()\"** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 9\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 9\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nAffected","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205434,"id":"CVE-2026-89741","ts":1789576713599,"field":"cvss","old":"7.8","new":"7"},{"seq":197684,"id":"CVE-2026-89741","ts":1789384318394,"field":"cvss","old":"5.8","new":"7.8"},{"seq":197683,"id":"CVE-2026-89741","ts":1789384318394,"field":"severity","old":"medium","new":"high"},{"seq":183839,"id":"CVE-2026-89741","ts":1789356677622,"field":"cvss","old":"7.8","new":"5.8"},{"seq":183838,"id":"CVE-2026-89741","ts":1789356677622,"field":"severity","old":"high","new":"medium"},{"seq":153624,"id":"CVE-2026-89741","ts":1789285351602,"field":"cvss","old":null,"new":"7.8"},{"seq":153623,"id":"CVE-2026-89741","ts":1789285351602,"field":"severity","old":"none","new":"high"},{"seq":147291,"id":"CVE-2026-89741","ts":1789270207474,"field":"cvss","old":null,"new":"5.8"},{"seq":147290,"id":"CVE-2026-89741","ts":1789270207474,"field":"severity","old":"none","new":"medium"},{"seq":109048,"id":"CVE-2026-89741","ts":1789183730103,"field":"cvss","old":null,"new":"5.8"},{"seq":109047,"id":"CVE-2026-89741","ts":1789183730103,"field":"severity","old":"none","new":"medium"}]}