{"id":"CVE-2026-93236","state":"PUBLISHED","title":"media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common\n\nWhen VIDIOC_TRY_FMT is called with an unsupported pixel format on the\nOUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2.\nHowever, if a distro has locally patched MPEG2 support out (as it has\nbeen broken for some time) the platform format table does not contain\nMPEG2 so find_format() returns NULL and the subsequent dereference of\nfmt_out->max_width triggers a NULL pointer dereference.\n\nFix this by falling back to the first format in the platform's format\narray instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid\nsince every platform defines at least one format.","publishedAt":"2026-09-24T15:33:35.013Z","updatedAt":"2026-10-19T09:07:47.914Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"276f28672bb6d5d5feca78db4219c7b5adf1be26","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"c620906fb1b2ad75d408ea9d06040d66952d4a31","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"3839b6be2279fc4f558723f2c0fbfc9c42070958","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"680a89683197cdfe4e03e6fd7755454c647d39c1","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"f2375a308640e401c142c5426d52c3d10e016d25","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"96dafbae77f50bfe2228bcfedcd8652c5e5f08e8","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"d61ba609c3226af3c84268ba606ea06ee63e511b","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"20aa934ace6917262ff579a73ec018d06a7bad1c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/media/meson/vdec/vdec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/media/meson/vdec/vdec.c"]}],"references":["https://git.kernel.org/stable/c/276f28672bb6d5d5feca78db4219c7b5adf1be26","https://git.kernel.org/stable/c/c620906fb1b2ad75d408ea9d06040d66952d4a31","https://git.kernel.org/stable/c/3839b6be2279fc4f558723f2c0fbfc9c42070958","https://git.kernel.org/stable/c/680a89683197cdfe4e03e6fd7755454c647d39c1","https://git.kernel.org/stable/c/f2375a308640e401c142c5426d52c3d10e016d25","https://git.kernel.org/stable/c/96dafbae77f50bfe2228bcfedcd8652c5e5f08e8","https://git.kernel.org/stable/c/d61ba609c3226af3c84268ba606ea06ee63e511b","https://git.kernel.org/stable/c/20aa934ace6917262ff579a73ec018d06a7bad1c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93236.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93236","state":"PUBLISHED","datePublished":"2026-09-24T15:33:35.013Z","dateUpdated":"2026-10-19T09:07:47.914Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.095Z"},"containers":{"cna":{"title":"media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common\n\nWhen VIDIOC_TRY_FMT is called with an unsupported pixel format on the\nOUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2.\nHowever, if a distro has locally patched MPEG2 support out (as it has\nbeen broken for some time) the platform format table does not contain\nMPEG2 so find_format() returns NULL and the subsequent dereference of\nfmt_out->max_width triggers a NULL pointer dereference.\n\nFix this by falling back to the first format in the platform's format\narray instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid\nsince every platform defines at least one format."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"276f28672bb6d5d5feca78db4219c7b5adf1be26","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"c620906fb1b2ad75d408ea9d06040d66952d4a31","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"3839b6be2279fc4f558723f2c0fbfc9c42070958","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"680a89683197cdfe4e03e6fd7755454c647d39c1","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"f2375a308640e401c142c5426d52c3d10e016d25","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"96dafbae77f50bfe2228bcfedcd8652c5e5f08e8","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"d61ba609c3226af3c84268ba606ea06ee63e511b","versionType":"git"},{"version":"3e7f51bd96077acad6acd7b45668f65b44233c4e","status":"affected","lessThan":"20aa934ace6917262ff579a73ec018d06a7bad1c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/media/meson/vdec/vdec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/media/meson/vdec/vdec.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/276f28672bb6d5d5feca78db4219c7b5adf1be26"},{"url":"https://git.kernel.org/stable/c/c620906fb1b2ad75d408ea9d06040d66952d4a31"},{"url":"https://git.kernel.org/stable/c/3839b6be2279fc4f558723f2c0fbfc9c42070958"},{"url":"https://git.kernel.org/stable/c/680a89683197cdfe4e03e6fd7755454c647d39c1"},{"url":"https://git.kernel.org/stable/c/f2375a308640e401c142c5426d52c3d10e016d25"},{"url":"https://git.kernel.org/stable/c/96dafbae77f50bfe2228bcfedcd8652c5e5f08e8"},{"url":"https://git.kernel.org/stable/c/d61ba609c3226af3c84268ba606ea06ee63e511b"},{"url":"https://git.kernel.org/stable/c/20aa934ace6917262ff579a73ec018d06a7bad1c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:07:47.914Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}