{"id":"CVE-2022-50499","state":"PUBLISHED","title":"media: dvb-core: Fix double free in dvb_register_device()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-core: Fix double free in dvb_register_device()\n\nIn function dvb_register_device() -> dvb_register_media_device() ->\ndvb_create_media_entity(), dvb->entity is allocated and initialized. If\nthe initialization fails, it frees the dvb->entity, and return an error\ncode. The caller takes the error code and handles the error by calling\ndvb_media_device_free(), which unregisters the entity and frees the\nfield again if it is not NULL. As dvb->entity may not NULLed in\ndvb_create_media_entity() when the allocation of dvbdev->pad fails, a\ndouble free may occur. This may also cause an Use After free in\nmedia_device_unregister_entity().\n\nFix this by storing NULL to dvb->entity when it is freed.","publishedAt":"2025-10-04T15:43:50.064Z","updatedAt":"2026-05-23T15:24:34.965Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9db28659aa893c68f162b11fd63bb7f6a713e52f","status":"affected","lessThan":"0588b12c418c3e4f927ced11f27b02ef4a5bfb07","versionType":"git"},{"version":"1399a136127bfe1b9bb7c951d9851da62a519121","status":"affected","lessThan":"e9a78485b658361fab6a5547377be6c1af6f1b3d","versionType":"git"},{"version":"4df2427a5148093987437054bb82da4d014dcd59","status":"affected","lessThan":"70bc51303871159796b55ba1a8f16637b46c2511","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"b21f62b49ee9c3e0216d685d9cfd6003e5727271","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"acf984a3718c2458eb9e08b6714490a04f213c58","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"772892b29ac50c2c5e918fc80104aa6ede81d837","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"123eddf92a114e03919942641d2c2b1f4ca56ea6","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"6b0d0477fce747d4137aa65856318b55fba72198","versionType":"git"},{"version":"8c17f6f5d0d6aab72a2af25c9911ac66e984be06","status":"affected","versionType":"git"},{"version":"202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c","status":"affected","versionType":"git"},{"version":"4.9.195","status":"affected","lessThan":"4.9.337","versionType":"semver"},{"version":"4.14.147","status":"affected","lessThan":"4.14.303","versionType":"semver"},{"version":"4.19.77","status":"affected","lessThan":"4.19.270","versionType":"semver"},{"version":"5.2.19","status":"affected","lessThan":"5.3","versionType":"semver"},{"version":"5.3.4","status":"affected","lessThan":"5.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/dvb-core/dvbdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.87","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.18","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.4","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/dvb-core/dvbdev.c"]}],"references":["https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07","https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d","https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511","https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271","https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8","https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58","https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837","https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6","https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50499.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50499","state":"PUBLISHED","datePublished":"2025-10-04T15:43:50.064Z","dateUpdated":"2026-05-23T15:24:34.965Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-04T15:39:19.464Z"},"containers":{"cna":{"title":"media: dvb-core: Fix double free in dvb_register_device()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-core: Fix double free in dvb_register_device()\n\nIn function dvb_register_device() -> dvb_register_media_device() ->\ndvb_create_media_entity(), dvb->entity is allocated and initialized. If\nthe initialization fails, it frees the dvb->entity, and return an error\ncode. The caller takes the error code and handles the error by calling\ndvb_media_device_free(), which unregisters the entity and frees the\nfield again if it is not NULL. As dvb->entity may not NULLed in\ndvb_create_media_entity() when the allocation of dvbdev->pad fails, a\ndouble free may occur. This may also cause an Use After free in\nmedia_device_unregister_entity().\n\nFix this by storing NULL to dvb->entity when it is freed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9db28659aa893c68f162b11fd63bb7f6a713e52f","status":"affected","lessThan":"0588b12c418c3e4f927ced11f27b02ef4a5bfb07","versionType":"git"},{"version":"1399a136127bfe1b9bb7c951d9851da62a519121","status":"affected","lessThan":"e9a78485b658361fab6a5547377be6c1af6f1b3d","versionType":"git"},{"version":"4df2427a5148093987437054bb82da4d014dcd59","status":"affected","lessThan":"70bc51303871159796b55ba1a8f16637b46c2511","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"b21f62b49ee9c3e0216d685d9cfd6003e5727271","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"acf984a3718c2458eb9e08b6714490a04f213c58","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"772892b29ac50c2c5e918fc80104aa6ede81d837","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"123eddf92a114e03919942641d2c2b1f4ca56ea6","versionType":"git"},{"version":"fcd5ce4b3936242e6679875a4d3c3acfc8743e15","status":"affected","lessThan":"6b0d0477fce747d4137aa65856318b55fba72198","versionType":"git"},{"version":"8c17f6f5d0d6aab72a2af25c9911ac66e984be06","status":"affected","versionType":"git"},{"version":"202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c","status":"affected","versionType":"git"},{"version":"4.9.195","status":"affected","lessThan":"4.9.337","versionType":"semver"},{"version":"4.14.147","status":"affected","lessThan":"4.14.303","versionType":"semver"},{"version":"4.19.77","status":"affected","lessThan":"4.19.270","versionType":"semver"},{"version":"5.2.19","status":"affected","lessThan":"5.3","versionType":"semver"},{"version":"5.3.4","status":"affected","lessThan":"5.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/dvb-core/dvbdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.87","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.18","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.4","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/dvb-core/dvbdev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07"},{"url":"https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d"},{"url":"https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511"},{"url":"https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271"},{"url":"https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8"},{"url":"https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58"},{"url":"https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837"},{"url":"https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6"},{"url":"https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:24:34.965Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.195","versionEndExcluding":"4.9.337"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.147","versionEndExcluding":"4.14.303"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.77","versionEndExcluding":"4.19.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","vers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