sound: ua101: fix division by zero at probe

Summary

CVECVE-2026-46184
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:34 UTC
Updated2026-06-01 17:17:30 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: sound: ua101: fix division by zero at probe Add a missing sanity check for bNrChannels in detect_usb_format() to prevent a division by zero in playback_urb_complete() and capture_urb_complete(). USB core does not validate class-specific descriptor fields such as bNrChannels, so drivers must verify them before use. If a device provides bNrChannels = 0, frame_bytes becomes zero and is later used as a divisor in the URB completion handlers, leading to a kernel crash.

Risk And Classification

EPSS: 0.000320000 probability, percentile 0.097210000 (date 2026-06-03)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 e02897c5b041c9b980055fa9a6167023d6dc5caf git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 aae1498c59f48d03ee358df84f07a5af9885f827 git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 66d9c2ed081f299cfb201d9e9c4faf920e56e0bf git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 6162e8212e88c39492d981b248b5e37002486c66 git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983 git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 0ff2b713f406e9ecadb406014d74e7a020ac12b1 git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 f1862dbf09080254c52175a448290c784dd7d3de git Not specified
CNA Linux Linux affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 d1f73f169c1014463b5060e3f60813e13ddc7b87 git Not specified
CNA Linux Linux affected 2.6.34 Not specified
CNA Linux Linux unaffected 2.6.34 semver Not specified
CNA Linux Linux unaffected 5.10.258 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.88 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/66d9c2ed081f299cfb201d9e9c4faf920e56e0bf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/aae1498c59f48d03ee358df84f07a5af9885f827 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e02897c5b041c9b980055fa9a6167023d6dc5caf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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