{"id":"CVE-2026-46018","state":"PUBLISHED","title":"ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES\n\nparse_uac2_sample_rate_range() caps the number of enumerated\nrates at MAX_NR_RATES, but it only breaks out of the current\nrate loop. A malformed UAC2 RANGE response with additional\ntriplets continues parsing the remaining triplets and repeatedly\nprints \"invalid uac2 rates\" while probe still holds\nregister_mutex.\n\nStop the whole parse once the cap is reached and return the\nnumber of rates collected so far.","publishedAt":"2026-05-27T12:56:19.588Z","updatedAt":"2026-10-15T01:19:57.388Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"5436bc1b07d4656f99412dc72871d250d7d55205","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"0da05fedf5e1966b7e7d389866cb86fcf09f4b32","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"f14bd323eec4b4f0ef662520ec852e593ece1d4c","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"ab5ba9fd138758ddc50222264ff246b31e397abf","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"ba036305323814ec1f8655313b2fa6a0f7048716","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"4d7893a137eadb6163ea4298bf67d74b811d76ef","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"a0b78639ef09b2e77974a3de3b1c07f6de3c5e56","versionType":"git"},{"version":"4fa0e81b83503900be277e6273a79651b375e288","status":"affected","lessThan":"3c318f97dcc50b2e0556a1813bd6958678e881fd","versionType":"git"},{"version":"44f059fb742aac78cffdab5e0d8fe0c9910c1ded","status":"affected","versionType":"git"},{"version":"c25a53781f61c78bf2a2fa308bbd35b42ba346f6","status":"affected","versionType":"git"},{"version":"3.0.81","status":"affected","lessThan":"3.1","versionType":"semver"},{"version":"3.2.47","status":"affected","lessThan":"3.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/format.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/format.c"]}],"references":["https://git.kernel.org/stable/c/5436bc1b07d4656f99412dc72871d250d7d55205","https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32","https://git.kernel.org/stable/c/f14bd323eec4b4f0ef662520ec852e593ece1d4c","https://git.kernel.org/stable/c/ab5ba9fd138758ddc50222264ff246b31e397abf","https://git.kernel.org/stable/c/ba036305323814ec1f8655313b2fa6a0f7048716","https://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76ef","https://git.kernel.org/stable/c/a0b78639ef09b2e77974a3de3b1c07f6de3c5e56","https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fd","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46018.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46018","state":"PUBLISHED","datePublished":"2026-05-27T12:56:19.588Z","dateUpdated":"2026-10-15T01:19:57.388Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.092Z"},"containers":{"cna":{"title":"ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES\n\nparse_uac2_sample_rate_range() caps the number of enumerated\nrates at MAX_NR_RATES, but it only breaks out of the current\nrate loop. 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