{"api_version":"1","generated_at":"2026-04-19T01:12:35+00:00","cve":"CVE-2026-23318","urls":{"html":"https://cve.report/CVE-2026-23318","api":"https://cve.report/api/cve/CVE-2026-23318.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23318","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23318"},"summary":{"title":"ALSA: usb-audio: Use correct version for UAC3 header validation","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-03-25 11:16:28","updated_at":"2026-04-18 09:16:18"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e","name":"https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5","name":"https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa","name":"https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8307d93e63d5f54ef10412d4db2dd551e920dee4","name":"https://git.kernel.org/stable/c/8307d93e63d5f54ef10412d4db2dd551e920dee4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f","name":"https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/82a7d0a1b88798de1a609130080ce0c65dd869e9","name":"https://git.kernel.org/stable/c/82a7d0a1b88798de1a609130080ce0c65dd869e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f","name":"https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc","name":"https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23318","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23318","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 82a7d0a1b88798de1a609130080ce0c65dd869e9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 8307d93e63d5f54ef10412d4db2dd551e920dee4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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5.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.253 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.77 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.17 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.7 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"23318","cve":"CVE-2026-23318","epss":"0.000320000","percentile":"0.090980000","score_date":"2026-04-18","updated_at":"2026-04-19 00:10:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/usb/validate.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"82a7d0a1b88798de1a609130080ce0c65dd869e9","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"8307d93e63d5f54ef10412d4db2dd551e920dee4","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"d3904ca40515272681ae61ad6f561c24f190957f","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"1e5753ff4c2e86aa88516f97a224c90a3d0b133e","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"499ffd15b00dc91ac95c28f76959dfb5cdcc84d5","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"lessThan":"54f9d645a5453d0bfece0c465d34aaf072ea99fa","status":"affected","version":"57f8770620e9b51c61089751f0b5ad3dbe376ff2","versionType":"git"},{"status":"affected","version":"17821e2fb16752f5d363fb5c3f8aab4df41b9bcc","versionType":"git"},{"status":"affected","version":"bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/usb/validate.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.4"},{"lessThan":"5.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.77","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.17","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.77","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.17","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.7","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"5.4","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","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-04-18T08:57:55.922Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23318","datePublished":"2026-03-25T10:27:12.884Z","dateReserved":"2026-01-13T15:37:45.995Z","dateUpdated":"2026-04-18T08:57:55.922Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-25 11:16:28","lastModifiedDate":"2026-04-18 09:16:18","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23318","Ordinal":"1","Title":"ALSA: usb-audio: Use correct version for UAC3 header validation","CVE":"CVE-2026-23318","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23318","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"ALSA: usb-audio: Use correct version for UAC3 header validation"}]}}}