CVE-2026-52963
ALSA: usb-audio: Bound MIDI endpoint descriptor scans
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 4.5, 4.10, 4.15, 4.20, 5.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In 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.
Timeline
- CVE published
Affected versions
- Linux Linux
From 4.4.238 · fixed in 4.5; From 4.9.238 · fixed in 4.10; From 4.14.200 · fixed in 4.15; From 4.19.149 · fixed in 4.20; From 5.4.69 · fixed in 5.5
- Linux Linux
5.7
References 8
git.kernel.org
- stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3af
- stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20
- stable/c/728ab0c72e49ca27185067984cd565425eb69b2e
- stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e
- stable/c/a0226560540c16717efcceaf15c862cf115b01d3
- stable/c/09141583bd97f4bbd7358e29fd138fe798467cdb
- stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94
- stable/c/d6854daa67be623860f4e1873fd3d3c275aba4ed