{"id":"CVE-2026-43436","state":"PUBLISHED","title":"ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces\n\nThe Scarlett2 mixer quirk in USB-audio driver may hit a NULL\ndereference when a malformed USB descriptor is passed, since it\nassumes the presence of an endpoint in the parsed interface in\nscarlett2_find_fc_interface(), as reported by fuzzer.\n\nFor avoiding the NULL dereference, just add the sanity check of\nbNumEndpoints and skip the invalid interface.","publishedAt":"2026-05-08T14:22:06.632Z","updatedAt":"2026-05-11T22:24:33.336Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"b014cc945baba75816cda0cf8934be87c9ed4947","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"b267255c15d2a5b90c4e926146aa155e5161e264","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"3d542cf3c4c854cdf5d58049771f68926b9eb2b9","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"3d4f23885e4b90347c9a1d779af6e79a99b5172a","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"df1d8abf36ca3681c21a6809eaa9a1e01ef897a6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/mixer_scarlett2.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/mixer_scarlett2.c"]}],"references":["https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947","https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba","https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264","https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9","https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a","https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43436.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43436","state":"PUBLISHED","datePublished":"2026-05-08T14:22:06.632Z","dateUpdated":"2026-05-11T22:24:33.336Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.009Z"},"containers":{"cna":{"title":"ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces\n\nThe Scarlett2 mixer quirk in USB-audio driver may hit a NULL\ndereference when a malformed USB descriptor is passed, since it\nassumes the presence of an endpoint in the parsed interface in\nscarlett2_find_fc_interface(), as reported by fuzzer.\n\nFor avoiding the NULL dereference, just add the sanity check of\nbNumEndpoints and skip the invalid interface."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"b014cc945baba75816cda0cf8934be87c9ed4947","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"b267255c15d2a5b90c4e926146aa155e5161e264","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"3d542cf3c4c854cdf5d58049771f68926b9eb2b9","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"3d4f23885e4b90347c9a1d779af6e79a99b5172a","versionType":"git"},{"version":"6c0a2078134aba6a77291554035304df9e16b85c","status":"affected","lessThan":"df1d8abf36ca3681c21a6809eaa9a1e01ef897a6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/mixer_scarlett2.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/mixer_scarlett2.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947"},{"url":"https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba"},{"url":"https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264"},{"url":"https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9"},{"url":"https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a"},{"url":"https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:24:33.336Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.18.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.19.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}