{"id":"CVE-2026-89892","published":"2026-09-16T11:16:57.870","lastModified":"2026-09-16T11:16:57.870","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: em28xx: defer audio-only extension registration\n\nThe audio-only path registers extensions while probing the primary device.\nFor a dual-TS board, this happens before dev_next is created. The duplicate\ndevice inherits is_audio_only and is then independently inserted into\nem28xx_devlist.\n\nThe list is intended to contain only primary devices: extension operations\nreach the secondary device through dev_next. The independently linked\nsecondary can be freed during disconnect while its list node remains\nreachable, resulting in a use-after-free.\n\nDefer audio-only extension registration to the module-request work item. It\nruns only after probing has completed construction of the optional\nsecondary device, so only the primary is registered and extension callbacks\nreach the secondary through dev_next.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0da1e627f4fc9d0e947fdae90913042120878923","tags":[]},{"url":"https://git.kernel.org/stable/c/1abe9524dec0fd26e9ceb8d586034d6f68dd8273","tags":[]},{"url":"https://git.kernel.org/stable/c/4666197ca4f7d80cd3b0292054fe45d76be9ba04","tags":[]},{"url":"https://git.kernel.org/stable/c/4e11c45dfdc72ab656067b1df8fcebaf52fd4715","tags":[]},{"url":"https://git.kernel.org/stable/c/95f76f51937fdfb0fc1e14cae606b1ef574a56f3","tags":[]},{"url":"https://git.kernel.org/stable/c/d06067ee32620f272cfb80c7bc7c572ad4e74724","tags":[]},{"url":"https://git.kernel.org/stable/c/f8d7e77d9c621b42a191c67a9b37bec23dc1d555","tags":[]},{"url":"https://git.kernel.org/stable/c/f9322ac9f862961d7f377b87ec26c8565af7e073","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}