{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23318","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:45.995Z","datePublished":"2026-03-25T10:27:12.884Z","dateUpdated":"2026-05-11T22:04:33.969Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:04:33.969Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Use correct version for UAC3 header validation\n\nThe entry of the validators table for UAC3 AC header descriptor is\ndefined with the wrong protocol version UAC_VERSION_2, while it should\nhave been UAC_VERSION_3.  This results in the validator never matching\nfor actual UAC3 devices (protocol == UAC_VERSION_3), causing their\nheader descriptors to bypass validation entirely.  A malicious USB\ndevice presenting a truncated UAC3 header could exploit this to cause\nout-of-bounds reads when the driver later accesses unvalidated\ndescriptor fields.\n\nThe bug was introduced in the same commit as the recently fixed UAC3\nfeature unit sub-type typo, and appears to be from the same copy-paste\nerror when the UAC3 section was created from the UAC2 section."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/validate.c"],"versions":[{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"82a7d0a1b88798de1a609130080ce0c65dd869e9","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"8307d93e63d5f54ef10412d4db2dd551e920dee4","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"d3904ca40515272681ae61ad6f561c24f190957f","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"1e5753ff4c2e86aa88516f97a224c90a3d0b133e","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"499ffd15b00dc91ac95c28f76959dfb5cdcc84d5","status":"affected","versionType":"git"},{"version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","lessThan":"54f9d645a5453d0bfece0c465d34aaf072ea99fa","status":"affected","versionType":"git"},{"version":"17821e2fb16752f5d363fb5c3f8aab4df41b9bcc","status":"affected","versionType":"git"},{"version":"bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/validate.c"],"versions":[{"version":"5.4","status":"affected"},{"version":"0","lessThan":"5.4","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.167","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.130","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.77","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.17","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.7","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.12.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.84"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/82a7d0a1b88798de1a609130080ce0c65dd869e9"},{"url":"https://git.kernel.org/stable/c/8307d93e63d5f54ef10412d4db2dd551e920dee4"},{"url":"https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f"},{"url":"https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc"},{"url":"https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f"},{"url":"https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e"},{"url":"https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5"},{"url":"https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa"}],"title":"ALSA: usb-audio: Use correct version for UAC3 header validation","x_generator":{"engine":"bippy-1.2.0"}}}}