CVE-2026-52964
Published Jun 24, 2026
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.
EPSS — Exploit Prediction
0.0018
Probability of exploitation
0.07%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/17e76b19de1aff5ff4de64d269290bd1b07a01d3
https://git.kernel.org/stable/c/918be519c7876329e1b6e2ea1c59f0b75e792dca
https://git.kernel.org/stable/c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2
https://git.kernel.org/stable/c/f9c184a83574549a36ea69b755f650e57d164c78
https://git.kernel.org/stable/c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307
Frequently Asked Questions
What is CVE-2026-52964? +
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.
How do I check if I'm vulnerable to CVE-2026-52964? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.