What’s Vulnerable › Vulnerabilities

CVE-2025-68753: ALSA: firewire-motu: add bounds check in put_user loop for DSP events

• Severity: high (CVSS 7.1 v3.1)
• 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: 2026-01-05 · updated 2026-10-19
• Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-motu: add bounds check in put_user loop for DSP events In the DSP event handling code, a put_user() loop copies event data. When the user buffer size is not aligned to 4 bytes, it could overwrite beyond the buffer boundary. Fix by adding a bounds check before put_user().

Affected products

• Linux kernel: 5.16 — 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/0d71b3c2ed742f1ccb3b0b7a61afb90c0251093f
• https://git.kernel.org/stable/c/298e753880b6ea99ac30df34959a7a03b0878eed
• https://git.kernel.org/stable/c/6d4f17782ce4facf3197e79707df411ee3d7b30a
• https://git.kernel.org/stable/c/8f9e51cf2a2a43d0cd72d3dc0b5ccea3f639c187
• https://git.kernel.org/stable/c/df692cf2b601a54b34edfdb9e683d67483aa8ce1
• https://git.kernel.org/stable/c/ea2c921d9de6e32ca50cb817b9d57bb881be70de

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