ALSA: usb-audio: Bound MIDI endpoint descriptor scans

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Summary

CVECVE-2026-52963
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:06 UTC
Updated2026-06-24 17:17:06 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI endpoint descriptor scans snd_usbmidi_get_ms_info() validates the internal MIDIStreaming endpoint descriptor size before using baAssocJackID[], but the descriptor walker can still return a class-specific endpoint descriptor whose bLength exceeds the remaining bytes in the endpoint-extra scan. That leaves later flexible-array reads bounded by bLength, but not by the remaining bytes in the endpoint-extra scan. Stop walking when bLength is zero or extends past the remaining endpoint-extra scan.

Risk And Classification

EPSS: 0.001840000 probability, percentile 0.081760000 (date 2026-06-25)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb e2f1260a056eb3215c13c48c5378f3e4112dc3af git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb c65b137d351e21cbc5630e73ef0eb1e1d75f5b20 git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb 728ab0c72e49ca27185067984cd565425eb69b2e git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb 3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb a0226560540c16717efcceaf15c862cf115b01d3 git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb 09141583bd97f4bbd7358e29fd138fe798467cdb git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb c59159ce10e75b568cd0d4b29efcb0fb0ddecc94 git Not specified
CNA Linux Linux affected 5c6cd7021a05a02fcf37f360592d7c18d4d807fb d6854daa67be623860f4e1873fd3d3c275aba4ed git Not specified
CNA Linux Linux affected 9e0c71f2f633b0442661966228827d1a33df485f git Not specified
CNA Linux Linux affected 0868bc5654c07628c421547f0821650a8c2cb8f3 git Not specified
CNA Linux Linux affected 78483c1c7741ffa72991d93d19a75bfdcc2cbf57 git Not specified
CNA Linux Linux affected 65d95462001c6ccd9bc9499c1fc9a90eca9de496 git Not specified
CNA Linux Linux affected ca767cf0152d18fc299cde85b18d1f46ac21e1ba git Not specified
CNA Linux Linux affected 4.4.238 4.5 semver Not specified
CNA Linux Linux affected 4.9.238 4.10 semver Not specified
CNA Linux Linux affected 4.14.200 4.15 semver Not specified
CNA Linux Linux affected 4.19.149 4.20 semver Not specified
CNA Linux Linux affected 5.4.69 5.5 semver Not specified
CNA Linux Linux affected 5.7 Not specified
CNA Linux Linux unaffected 5.7 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 6.6.141 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.91 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/09141583bd97f4bbd7358e29fd138fe798467cdb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/728ab0c72e49ca27185067984cd565425eb69b2e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d6854daa67be623860f4e1873fd3d3c275aba4ed 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3af 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a0226560540c16717efcceaf15c862cf115b01d3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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