{"id":"CVE-2026-46146","state":"PUBLISHED","title":"ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()\n\nThe convert_chmap_v3() has a loop with its increment size of\ncs_desc->wLength, but we forgot to validate cs_desc->wLength itself,\nwhich may lead to potential endless loop by a malformed descriptor.\n\nAdd a proper size check to abort the loop for plugging the hole.","publishedAt":"2026-05-28T09:36:02.794Z","updatedAt":"2026-10-15T01:20:47.967Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"786571b10b1ae6d90e1242848ce78ee7e1d493c4","status":"affected","lessThan":"076d5d13eb9c1ad259a7f246149f6676c62285f9","versionType":"git"},{"version":"275e37532e8ebe25e8a4069b2d9f955bfd202a46","status":"affected","lessThan":"316aa0b1e3c5600eae5ab876394c1ac70e6db581","versionType":"git"},{"version":"47ab3d820cb0a502bd0074f83bb3cf7ab5d79902","status":"affected","lessThan":"24a40df79307ca7ca0eec0889361cf6ac146d72a","versionType":"git"},{"version":"1034719fdefd26caeec0a44a868bb5a412c2c1a5","status":"affected","lessThan":"e0e3dcf48189603f3865f1a0b799b3b42baae96d","versionType":"git"},{"version":"ae17b3b5e753efc239421d186cd1ff06e5ac296e","status":"affected","lessThan":"4e0ee232ebe3df04874125d7c7f3e6c25ea5483d","versionType":"git"},{"version":"ecfd41166b72b67d3bdeb88d224ff445f6163869","status":"affected","lessThan":"be09b47ed8677d76962e3240c145502e2ad9f3c8","versionType":"git"},{"version":"ecfd41166b72b67d3bdeb88d224ff445f6163869","status":"affected","lessThan":"fa5b19ce69067874b1413f3c2027563bae8c2cb3","versionType":"git"},{"version":"ecfd41166b72b67d3bdeb88d224ff445f6163869","status":"affected","lessThan":"6e7247d8f5fefeceb0bb9cc80a5388a636b219cd","versionType":"git"},{"version":"799c06ad4c9c790c265e8b6b94947213f1fb389c","status":"affected","versionType":"git"},{"version":"dfdcbcde5c20df878178245d4449feada7d5b201","status":"affected","versionType":"git"},{"version":"7ef3fd250f84494fb2f7871f357808edaa1fc6ce","status":"affected","versionType":"git"},{"version":"5.10.241","status":"affected","lessThan":"5.10.258","versionType":"semver"},{"version":"5.15.190","status":"affected","lessThan":"5.15.209","versionType":"semver"},{"version":"6.1.149","status":"affected","lessThan":"6.1.175","versionType":"semver"},{"version":"6.6.103","status":"affected","lessThan":"6.6.140","versionType":"semver"},{"version":"6.12.43","status":"affected","lessThan":"6.12.88","versionType":"semver"},{"version":"5.4.297","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/stream.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","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":"6.12.88","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","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/stream.c"]}],"references":["https://git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9","https://git.kernel.org/stable/c/316aa0b1e3c5600eae5ab876394c1ac70e6db581","https://git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72a","https://git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d","https://git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d","https://git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8","https://git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3","https://git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd","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-2026-46146.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46146","state":"PUBLISHED","datePublished":"2026-05-28T09:36:02.794Z","dateUpdated":"2026-10-15T01:20:47.967Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.100Z"},"containers":{"cna":{"title":"ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()\n\nThe convert_chmap_v3() has a loop with its increment size of\ncs_desc->wLength, but we forgot to validate cs_desc->wLength itself,\nwhich may lead to potential endless loop by a malformed descriptor.\n\nAdd a proper size check to abort the loop for plugging the hole."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"786571b10b1ae6d90e1242848ce78ee7e1d493c4","status":"affected","lessThan":"076d5d13eb9c1ad259a7f246149f6676c62285f9","versionType":"git"},{"version":"275e37532e8ebe25e8a4069b2d9f955bfd202a46","status":"affected","lessThan":"316aa0b1e3c5600eae5ab876394c1ac70e6db581","versionType":"git"},{"version":"47ab3d820cb0a502bd0074f83bb3cf7ab5d79902","status":"affected","lessThan":"24a40df79307ca7ca0eec0889361cf6ac146d72a","versionType":"git"},{"version":"1034719fdefd26caeec0a44a868bb5a412c2c1a5","status":"affected","lessThan":"e0e3dcf48189603f3865f1a0b799b3b42baae96d","versionType":"git"},{"version":"ae17b3b5e753efc239421d186cd1ff06e5ac296e","status":"affected","lessThan":"4e0ee232ebe3df04874125d7c7f3e6c25ea5483d","versionType":"git"},{"version":"ecfd41166b72b67d3bdeb88d224ff445f6163869","status":"affected","lessThan":"be09b47ed8677d76962e3240c145502e2ad9f3c8","versionType":"git"},{"version":"ecfd41166b72b67d3bdeb88d224ff445f6163869","status":"affected","lessThan":"fa5b19ce69067874b1413f3c2027563bae8c2cb3","versionType":"git"},{"version":"ecfd41166b72b67d3bdeb88d224ff445f6163869","status":"affected","lessThan":"6e7247d8f5fefeceb0bb9cc80a5388a636b219cd","versionType":"git"},{"version":"799c06ad4c9c790c265e8b6b94947213f1fb389c","status":"affected","versionType":"git"},{"version":"dfdcbcde5c20df878178245d4449feada7d5b201","status":"affected","versionType":"git"},{"version":"7ef3fd250f84494fb2f7871f357808edaa1fc6ce","status":"affected","versionType":"git"},{"version":"5.10.241","status":"affected","lessThan":"5.10.258","versionType":"semver"},{"version":"5.15.190","status":"affected","lessThan":"5.15.209","versionType":"semver"},{"version":"6.1.149","status":"affected","lessThan":"6.1.175","versionType":"semver"},{"version":"6.6.103","status":"affected","lessThan":"6.6.140","versionType":"semver"},{"version":"6.12.43","status":"affected","lessThan":"6.12.88","versionType":"semver"},{"version":"5.4.297","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/stream.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","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":"6.12.88","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","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/stream.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9"},{"url":"https://git.kernel.org/stable/c/316aa0b1e3c5600eae5ab876394c1ac70e6db581"},{"url":"https://git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72a"},{"url":"https://git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d"},{"url":"https://git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d"},{"url":"https://git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8"},{"url":"https://git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3"},{"url":"https://git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:57:58.491Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.241","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.190","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.149","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.103","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.43","versionEndExcluding":"6.12.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.297"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:20:47.967Z"},"x_adpType":"supplier"}]}}}