Answer in brief
CVE-2026-52963 records a Unknown severity vulnerability in ALSA: usb-audio: Bound MIDI endpoint descriptor scans. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <e2f1260a056eb3215c13c48c5378f3e4112dc3af || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <c65b137d351e21cbc5630e73ef0eb1e1d75f5b20 || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <728ab0c72e49ca27185067984cd565425eb69b2e || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <a0226560540c16717efcceaf15c862cf115b01d3 || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <09141583bd97f4bbd7358e29fd138fe798467cdb || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <c59159ce10e75b568cd0d4b29efcb0fb0ddecc94 || >=5c6cd7021a05a02fcf37f360592d7c18d4d807fb <d6854daa67be623860f4e1873fd3d3c275aba4ed || 9e0c71f2f633b0442661966228827d1a33df485f || 0868bc5654c07628c421547f0821650a8c2cb8f3 || 78483c1c7741ffa72991d93d19a75bfdcc2cbf57 || 65d95462001c6ccd9bc9499c1fc9a90eca9de496 || ca767cf0152d18fc299cde85b18d1f46ac21e1ba || >=4.4.238 <4.5 || >=4.9.238 <4.10 || >=4.14.200 <4.15 || >=4.19.149 <4.20 || >=5.4.69 <5.5 | e2f1260a056eb3215c13c48c5378f3e4112dc3af, c65b137d351e21cbc5630e73ef0eb1e1d75f5b20, 728ab0c72e49ca27185067984cd565425eb69b2e, 3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e, a0226560540c16717efcceaf15c862cf115b01d3, 09141583bd97f4bbd7358e29fd138fe798467cdb, c59159ce10e75b568cd0d4b29efcb0fb0ddecc94, d6854daa67be623860f4e1873fd3d3c275aba4ed, 4.5, 4.10, 4.15, 4.20, 5.5 |
| Linux/Linuxgeneric | 5.7 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.