ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()

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Summary

CVECVE-2026-46146
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:30 UTC
Updated2026-06-10 21:18:25 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3() The convert_chmap_v3() has a loop with its increment size of cs_desc->wLength, but we forgot to validate cs_desc->wLength itself, which may lead to potential endless loop by a malformed descriptor. Add a proper size check to abort the loop for plugging the hole.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000320000 probability, percentile 0.097350000 (date 2026-06-04)

Problem Types: CWE-835

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 786571b10b1ae6d90e1242848ce78ee7e1d493c4 076d5d13eb9c1ad259a7f246149f6676c62285f9 git Not specified
CNA Linux Linux affected 275e37532e8ebe25e8a4069b2d9f955bfd202a46 316aa0b1e3c5600eae5ab876394c1ac70e6db581 git Not specified
CNA Linux Linux affected 47ab3d820cb0a502bd0074f83bb3cf7ab5d79902 24a40df79307ca7ca0eec0889361cf6ac146d72a git Not specified
CNA Linux Linux affected 1034719fdefd26caeec0a44a868bb5a412c2c1a5 e0e3dcf48189603f3865f1a0b799b3b42baae96d git Not specified
CNA Linux Linux affected ae17b3b5e753efc239421d186cd1ff06e5ac296e 4e0ee232ebe3df04874125d7c7f3e6c25ea5483d git Not specified
CNA Linux Linux affected ecfd41166b72b67d3bdeb88d224ff445f6163869 be09b47ed8677d76962e3240c145502e2ad9f3c8 git Not specified
CNA Linux Linux affected ecfd41166b72b67d3bdeb88d224ff445f6163869 fa5b19ce69067874b1413f3c2027563bae8c2cb3 git Not specified
CNA Linux Linux affected ecfd41166b72b67d3bdeb88d224ff445f6163869 6e7247d8f5fefeceb0bb9cc80a5388a636b219cd git Not specified
CNA Linux Linux affected 799c06ad4c9c790c265e8b6b94947213f1fb389c git Not specified
CNA Linux Linux affected dfdcbcde5c20df878178245d4449feada7d5b201 git Not specified
CNA Linux Linux affected 7ef3fd250f84494fb2f7871f357808edaa1fc6ce git Not specified
CNA Linux Linux affected 5.10.241 5.10.258 semver Not specified
CNA Linux Linux affected 5.15.190 5.15.209 semver Not specified
CNA Linux Linux affected 6.1.149 6.1.175 semver Not specified
CNA Linux Linux affected 6.6.103 6.6.140 semver Not specified
CNA Linux Linux affected 6.12.43 6.12.88 semver Not specified
CNA Linux Linux affected 5.4.297 5.5 semver Not specified
CNA Linux Linux affected 6.15.11 6.16 semver Not specified
CNA Linux Linux affected 6.16.2 6.17 semver Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 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/316aa0b1e3c5600eae5ab876394c1ac70e6db581 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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