ALSA: usb-audio: Validate UAC3 cluster segment descriptors
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Validate UAC3 cluster segment descriptors UAC3 class segment descriptors need to be verified whether their sizes match with the declared lengths and whether they fit with the allocated buffer sizes, too. Otherwise malicious firmware may lead to the unexpected OOB accesses.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Validate UAC3 cluster segment descriptors UAC3 class segment descriptors need to be verified whether their sizes match with the declared lengths and whether they fit with the allocated buffer sizes, too. Otherwise malicious firmware may lead to the unexpected OOB accesses.
05 / REFERENCES
Further evidence
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1034719fdefd26caeec0a44a868bb5a412c2c1a5
- https://git.kernel.org/stable/c/275e37532e8ebe25e8a4069b2d9f955bfd202a46
- https://git.kernel.org/stable/c/47ab3d820cb0a502bd0074f83bb3cf7ab5d79902
- https://git.kernel.org/stable/c/786571b10b1ae6d90e1242848ce78ee7e1d493c4
- https://git.kernel.org/stable/c/799c06ad4c9c790c265e8b6b94947213f1fb389c
- https://git.kernel.org/stable/c/7ef3fd250f84494fb2f7871f357808edaa1fc6ce
- https://git.kernel.org/stable/c/ae17b3b5e753efc239421d186cd1ff06e5ac296e
- https://git.kernel.org/stable/c/dfdcbcde5c20df878178245d4449feada7d5b201
- https://git.kernel.org/stable/c/ecfd41166b72b67d3bdeb88d224ff445f6163869
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39757.json
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-39757