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Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans The USB MIDI 2.0 endpoint parser has the same descriptor walking pattern as the legacy MIDI parser. It validates bLength against bNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the remaining bytes in the endpoint-extra scan. A malformed device can therefore make later baAssoGrpTrmBlkID[] reads consume bytes past the walked descriptor. Reject zero-length and overlong descriptors while walking endpoint extras.

PUBLISHED Reserved 2026-06-09 | Published 2026-06-24 | Updated 2026-06-24 | Assigner Linux

Product status

Default status
unaffected

ff49d1df79aef7580fe3ac99d17c3f886655d080 (git) before fafc97bd01e4c737eaeafadfdadb1af4bbfa7307
affected

ff49d1df79aef7580fe3ac99d17c3f886655d080 (git) before a310b4bebda5e4a1b26520c0cc5145ccd6d617e2
affected

ff49d1df79aef7580fe3ac99d17c3f886655d080 (git) before f9c184a83574549a36ea69b755f650e57d164c78
affected

ff49d1df79aef7580fe3ac99d17c3f886655d080 (git) before 17e76b19de1aff5ff4de64d269290bd1b07a01d3
affected

ff49d1df79aef7580fe3ac99d17c3f886655d080 (git) before 918be519c7876329e1b6e2ea1c59f0b75e792dca
affected

Default status
affected

6.5
affected

Any version before 6.5
unaffected

6.6.141 (semver)
unaffected

6.12.91 (semver)
unaffected

6.18.33 (semver)
unaffected

7.0.10 (semver)
unaffected

7.1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307

git.kernel.org/...c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2

git.kernel.org/...c/f9c184a83574549a36ea69b755f650e57d164c78

git.kernel.org/...c/17e76b19de1aff5ff4de64d269290bd1b07a01d3

git.kernel.org/...c/918be519c7876329e1b6e2ea1c59f0b75e792dca

cve.org (CVE-2026-52964)

nvd.nist.gov (CVE-2026-52964)

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