CVE-2026-52963
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…
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/09141583bd97f4bbd7358e29fd138fe798467cdbPatch
- https://git.kernel.org/stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6ePatch
- https://git.kernel.org/stable/c/728ab0c72e49ca27185067984cd565425eb69b2ePatch
- https://git.kernel.org/stable/c/a0226560540c16717efcceaf15c862cf115b01d3Patch
- https://git.kernel.org/stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94Patch
- https://git.kernel.org/stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20Patch
- https://git.kernel.org/stable/c/d6854daa67be623860f4e1873fd3d3c275aba4edPatch
- https://git.kernel.org/stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3afPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.