CVE-2025-38249
ALSA USB Audio Out-of-Bounds Read Vulnerability
Description
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.
INFO
Published Date :
July 9, 2025, 11:15 a.m.
Last Modified :
July 17, 2025, 5:15 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2025-38249.
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CVE-2025-38249 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-38249 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 17, 2025
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403 Added Reference https://git.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 10, 2025
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118b -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 09, 2025
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/0ee87c2814deb5e42921281116ac3abcb326880b Added Reference https://git.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36 Added Reference https://git.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401 Added Reference https://git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8 Added Reference https://git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-38249 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-38249
weaknesses.