ALSA: usb: Fix UAF at delayed release of MIDI2 EPs

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74642
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-22 16:16:37 UTC
Updated2026-08-22 16:16:37 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ALSA: usb: Fix UAF at delayed release of MIDI2 EPs The recent fix for UAF in ump_to_endpoint() caused another UAF because it tries to dereference the UMP endpoint object, but this might be executed at a delayed context where the endpoint has been already released. Add private_free to clear the associated data for avoiding the further dereference for delayed releases.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.061990000 (date 2026-08-24)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 49eccef6d6e1c00dac6fb2e7eb6f9206c33e1c37 d431941825d357be7d9ab0cb7505e3a1963bd89e git Not specified
CNA Linux Linux affected 8a7a33b846d6ba695891b8d0040027cdbad8cd52 422d8a02de5ce6a29d616d55e5ead5dec69ac1d7 git Not specified
CNA Linux Linux affected cc014ebf803174f0e5d15956dfc5a38413c945ae d217d723c5e43881b952cdb978477f7f2dc0b6d7 git Not specified
CNA Linux Linux affected ae388c0e1bf727972096f770f82d12e4f748d1b6 f9d492a39ebeb1a56f13ec6dd165a18a48dec812 git Not specified
CNA Linux Linux affected 4a05b2d1b4642df74f30b6f54843e825c4a2bfd3 f8a80cfb68613fb7e6452b66447dbc63f435d140 git Not specified
CNA Linux Linux affected 6.6.151 6.6.152 semver Not specified
CNA Linux Linux affected 6.12.103 6.12.104 semver Not specified
CNA Linux Linux affected 6.18.44 6.18.45 semver Not specified
CNA Linux Linux affected 7.1.8 7.1.9 semver Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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