Bug 2424889 (CVE-2025-68346)

Summary: CVE-2025-68346 kernel: ALSA: dice: fix buffer overflow in detect_stream_formats()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-12-24 11:03:57 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: dice: fix buffer overflow in detect_stream_formats()

The function detect_stream_formats() reads the stream_count value directly
from a FireWire device without validating it. This can lead to
out-of-bounds writes when a malicious device provides a stream_count value
greater than MAX_STREAMS.

Fix by applying the same validation to both TX and RX stream counts in
detect_stream_formats().
Comment 1 Vipul Nair 2025-12-24 12:32:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122453-CVE-2025-68346-10ef@gregkh/T