CVE-2025-39757
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.18% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1034719fdefd26caeec0a44a868bb5a412c2c1a5Patch
- https://git.kernel.org/stable/c/275e37532e8ebe25e8a4069b2d9f955bfd202a46Patch
- https://git.kernel.org/stable/c/47ab3d820cb0a502bd0074f83bb3cf7ab5d79902Patch
- https://git.kernel.org/stable/c/786571b10b1ae6d90e1242848ce78ee7e1d493c4Patch
- https://git.kernel.org/stable/c/799c06ad4c9c790c265e8b6b94947213f1fb389cPatch
- https://git.kernel.org/stable/c/7ef3fd250f84494fb2f7871f357808edaa1fc6cePatch
- https://git.kernel.org/stable/c/ae17b3b5e753efc239421d186cd1ff06e5ac296ePatch
- https://git.kernel.org/stable/c/dfdcbcde5c20df878178245d4449feada7d5b201Patch
- https://git.kernel.org/stable/c/ecfd41166b72b67d3bdeb88d224ff445f6163869Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.