What’s Vulnerable › Vulnerabilities

CVE-2025-68346: ALSA: dice: fix buffer overflow in detect_stream_formats()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-24 · updated 2026-10-19

Description

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().

Affected products

• Linux kernel: 4.18 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1e1b3207a53e50d5a66289fffc1f7d52cd9c50f9
• https://git.kernel.org/stable/c/324f3e03e8a85931ce0880654e3c3eb38b0f0bba
• https://git.kernel.org/stable/c/3cf854cec0eb371da47ff5fe56eab189d7fa623a
• https://git.kernel.org/stable/c/4a6ab0f6cc9bdfdfecbf257a46ff4275bd965af4
• https://git.kernel.org/stable/c/932aa1e80b022419cf9710e970739b7a8794f27c
• https://git.kernel.org/stable/c/c0a1fe1902ad23e6d48e0f68be1258ccf7a163e6
• https://git.kernel.org/stable/c/d6280a5b00cad37d9a9a875849e5bf7ed2fe4950
• https://git.kernel.org/stable/c/dea3ed2c16f99f46f97b1a090bf80ecdd6972ce0

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