{"api_version":"1","generated_at":"2026-04-25T12:37:58+00:00","cve":"CVE-2026-31583","urls":{"html":"https://cve.report/CVE-2026-31583","api":"https://cve.report/api/cve/CVE-2026-31583.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31583","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31583"},"summary":{"title":"media: em28xx: fix use-after-free in em28xx_v4l2_open()","description":"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->v4l2 without holding dev->lock,\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->v4l2 to NULL under dev->lock.\n\nThis race leads to two issues:\n - use-after-free in v4l2_fh_init() when accessing vdev->ctrl_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->norm, since dev->v4l2 has been set to NULL.\n\nFix this by moving the mutex_lock() before the dev->v4l2 read and\nadding a NULL check for dev->v4l2 under the lock.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-24 15:16:33","updated_at":"2026-04-24 17:51:40"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f","name":"https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd","name":"https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972","name":"https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324","name":"https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31583","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31583","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 5fb2940327722b4684d2f964b54c1c90aa277324 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 871b8ea8ef39a6c253594649f4339378fad3d0dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6b9e66437cc6123ddedac141e1b8b6fcf57d2972 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 dd2b888e08d3b3d6aacd65d76cd44fac11da750f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.83 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.24 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.14 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.1 7.0.* semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/media/usb/em28xx/em28xx-video.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5fb2940327722b4684d2f964b54c1c90aa277324","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"871b8ea8ef39a6c253594649f4339378fad3d0dd","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6b9e66437cc6123ddedac141e1b8b6fcf57d2972","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"dd2b888e08d3b3d6aacd65d76cd44fac11da750f","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/media/usb/em28xx/em28xx-video.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.83","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.24","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.1","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.83","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.24","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->v4l2 without holding dev->lock,\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->v4l2 to NULL under dev->lock.\n\nThis race leads to two issues:\n - use-after-free in v4l2_fh_init() when accessing vdev->ctrl_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->norm, since dev->v4l2 has been set to NULL.\n\nFix this by moving the mutex_lock() before the dev->v4l2 read and\nadding a NULL check for dev->v4l2 under the lock."}],"providerMetadata":{"dateUpdated":"2026-04-24T14:42:12.923Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324"},{"url":"https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd"},{"url":"https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972"},{"url":"https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f"}],"title":"media: em28xx: fix use-after-free in em28xx_v4l2_open()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31583","datePublished":"2026-04-24T14:42:12.923Z","dateReserved":"2026-03-09T15:48:24.120Z","dateUpdated":"2026-04-24T14:42:12.923Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-24 15:16:33","lastModifiedDate":"2026-04-24 17:51:40","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31583","Ordinal":"1","Title":"media: em28xx: fix use-after-free in em28xx_v4l2_open()","CVE":"CVE-2026-31583","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31583","Ordinal":"1","NoteData":"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->v4l2 without holding dev->lock,\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->v4l2 to NULL under dev->lock.\n\nThis race leads to two issues:\n - use-after-free in v4l2_fh_init() when accessing vdev->ctrl_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->norm, since dev->v4l2 has been set to NULL.\n\nFix this by moving the mutex_lock() before the dev->v4l2 read and\nadding a NULL check for dev->v4l2 under the lock.","Type":"Description","Title":"media: em28xx: fix use-after-free in em28xx_v4l2_open()"}]}}}