CVE-2025-38249
What it is
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() In snd_usb_get_audioformat_uac3(), the length value returned from snd_usb_ctl_msg() is used directly for memory allocation without validation. This length is controlled by the USB device. The allocated buffer is cast to a uac3_cluster_header_descriptor and its fields are accessed without verifying that the buffer is large enough. If the device returns a smaller than expected length, this leads to an out-of-bounds read. Add a length check to ensure the buffer is large enough for uac3_cluster_header_descriptor.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-125 · Out-of-bounds read
- Record status
- Analyzed
Affected
- Linux Kernel < 5.4.296
- Linux Kernel < 5.10.240
- Linux Kernel < 5.15.187
- Linux Kernel < 6.1.143
- Linux Kernel < 6.6.96
- Linux Kernel < 6.12.36
- Linux Kernel < 6.15.5
- Linux Kernel 6.16
Attack profile CVSS 3.1 · 7.1
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-38249.md and follow it. Check whether this project is affected by CVE-2025-38249. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/0ee87c2814deb5e42921281116ac3abcb326880b
- https://git.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36
- https://git.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403
- https://git.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21
- https://git.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401
- https://git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8
- https://git.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118b
- https://git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a
References
- https://git.kernel.org/stable/c/0ee87c2814deb5e42921281116ac3abcb326880b
- https://git.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36
- https://git.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403
- https://git.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21
- https://git.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401
- https://git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8
- https://git.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118b
- https://git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html