{"id":"CVE-2026-46184","state":"PUBLISHED","title":"sound: ua101: fix division by zero at probe","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsound: ua101: fix division by zero at probe\n\nAdd a missing sanity check for bNrChannels in detect_usb_format()\nto prevent a division by zero in playback_urb_complete() and\ncapture_urb_complete().\n\nUSB core does not validate class-specific descriptor fields such\nas bNrChannels, so drivers must verify them before use. If a\ndevice provides bNrChannels = 0, frame_bytes becomes zero and is\nlater used as a divisor in the URB completion handlers, leading\nto a kernel crash.","publishedAt":"2026-05-28T09:36:38.134Z","updatedAt":"2026-06-14T18:00:59.666Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"e02897c5b041c9b980055fa9a6167023d6dc5caf","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"aae1498c59f48d03ee358df84f07a5af9885f827","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"66d9c2ed081f299cfb201d9e9c4faf920e56e0bf","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"6162e8212e88c39492d981b248b5e37002486c66","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"0ff2b713f406e9ecadb406014d74e7a020ac12b1","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"f1862dbf09080254c52175a448290c784dd7d3de","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"d1f73f169c1014463b5060e3f60813e13ddc7b87","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/misc/ua101.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.34","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/misc/ua101.c"]}],"references":["https://git.kernel.org/stable/c/e02897c5b041c9b980055fa9a6167023d6dc5caf","https://git.kernel.org/stable/c/aae1498c59f48d03ee358df84f07a5af9885f827","https://git.kernel.org/stable/c/66d9c2ed081f299cfb201d9e9c4faf920e56e0bf","https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66","https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983","https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1","https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de","https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46184.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46184","state":"PUBLISHED","datePublished":"2026-05-28T09:36:38.134Z","dateUpdated":"2026-06-14T18:00:59.666Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.103Z"},"containers":{"cna":{"title":"sound: ua101: fix division by zero at probe","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsound: ua101: fix division by zero at probe\n\nAdd a missing sanity check for bNrChannels in detect_usb_format()\nto prevent a division by zero in playback_urb_complete() and\ncapture_urb_complete().\n\nUSB core does not validate class-specific descriptor fields such\nas bNrChannels, so drivers must verify them before use. If a\ndevice provides bNrChannels = 0, frame_bytes becomes zero and is\nlater used as a divisor in the URB completion handlers, leading\nto a kernel crash."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"e02897c5b041c9b980055fa9a6167023d6dc5caf","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"aae1498c59f48d03ee358df84f07a5af9885f827","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"66d9c2ed081f299cfb201d9e9c4faf920e56e0bf","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"6162e8212e88c39492d981b248b5e37002486c66","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"0ff2b713f406e9ecadb406014d74e7a020ac12b1","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"f1862dbf09080254c52175a448290c784dd7d3de","versionType":"git"},{"version":"63978ab3e3e963db28093b53bb4598f2702e1ad7","status":"affected","lessThan":"d1f73f169c1014463b5060e3f60813e13ddc7b87","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/misc/ua101.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.34","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.34","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/misc/ua101.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e02897c5b041c9b980055fa9a6167023d6dc5caf"},{"url":"https://git.kernel.org/stable/c/aae1498c59f48d03ee358df84f07a5af9885f827"},{"url":"https://git.kernel.org/stable/c/66d9c2ed081f299cfb201d9e9c4faf920e56e0bf"},{"url":"https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66"},{"url":"https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983"},{"url":"https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1"},{"url":"https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de"},{"url":"https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T18:00:59.666Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"6.12.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}