{"id":"CVE-2026-31583","summary":"media: em28xx: fix use-after-free in em28xx_v4l2_open()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: em28xx: fix use-after-free in em28xx_v4l2_open()\n\nem28xx_v4l2_open() reads dev-\u003ev4l2 without holding dev-\u003elock,\ncreating a race with em28xx_v4l2_init()'s error path and\nem28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct\nand set dev-\u003ev4l2 to NULL under dev-\u003elock.\n\nThis race leads to two issues:\n - use-after-free in v4l2_fh_init() when accessing vdev-\u003ectrl_handler,\n   since the video_device is embedded in the freed em28xx_v4l2 struct.\n - NULL pointer dereference in em28xx_resolution_set() when accessing\n   v4l2-\u003enorm, since dev-\u003ev4l2 has been set to NULL.\n\nFix this by moving the mutex_lock() before the dev-\u003ev4l2 read and\nadding a NULL check for dev-\u003ev4l2 under the lock.","modified":"2026-06-03T03:54:25.187623918Z","published":"2026-04-24T14:42:12.923Z","related":["CGA-5qf8-x3fr-vrj2","openSUSE-SU-2026:10703-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31583.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2cbf81f76842e46bdf25823c70e1db4044a65678"},{"type":"WEB","url":"https://git.kernel.org/stable/c/38a327221f7f765e7d853b7bafe47e342441ec85"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c0283a59e36e3707c4a81f4952e362d31f876b8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972"},{"type":"WEB","url":"https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31583.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31583"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8139a4d583abad45eb987b5a99b3281b6d435b7e"},{"fixed":"3c0283a59e36e3707c4a81f4952e362d31f876b8"},{"fixed":"2cbf81f76842e46bdf25823c70e1db4044a65678"},{"fixed":"38a327221f7f765e7d853b7bafe47e342441ec85"},{"fixed":"b5d141ea15f173f15b9f0a72965902f3428c0d92"},{"fixed":"5fb2940327722b4684d2f964b54c1c90aa277324"},{"fixed":"871b8ea8ef39a6c253594649f4339378fad3d0dd"},{"fixed":"6b9e66437cc6123ddedac141e1b8b6fcf57d2972"},{"fixed":"dd2b888e08d3b3d6aacd65d76cd44fac11da750f"},{"fixed":"a66485a934c7187ae8e36517d40615fa2e961cff"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31583.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.16.0"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.136"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.83"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.24"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.20.0"},{"fixed":"7.0.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31583.json"}}],"schema_version":"1.7.5"}