ALSA: mpu401: Check card index validity at probe

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Summary

CVECVE-2026-80969
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:02 UTC
Updated2026-09-13 07:17:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ALSA: mpu401: Check card index validity at probe mpu401 driver blindly trusts that the given devptr->id value is within the proper card index range at probe. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.099330000 (date 2026-09-13)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b3fe95123f0db79dd0345d249c312823178c11f5 76b6bc38d0f310c0ae1b2a2ebabe2947d92c601a git Not specified
CNA Linux Linux affected b3fe95123f0db79dd0345d249c312823178c11f5 cc4215cc2a4b2a9cf8b1952bbe8d5bf925acb3ea git Not specified
CNA Linux Linux affected b3fe95123f0db79dd0345d249c312823178c11f5 8adda66edf795d4648f8e26f312e4414c535d25a git Not specified
CNA Linux Linux affected b3fe95123f0db79dd0345d249c312823178c11f5 f7dcecb92ed192ff5fcf842918fb1aaea84b5bdd git Not specified
CNA Linux Linux affected 2.6.16 Not specified
CNA Linux Linux unaffected 2.6.16 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cc4215cc2a4b2a9cf8b1952bbe8d5bf925acb3ea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/76b6bc38d0f310c0ae1b2a2ebabe2947d92c601a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8adda66edf795d4648f8e26f312e4414c535d25a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f7dcecb92ed192ff5fcf842918fb1aaea84b5bdd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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