SB2025120898 - NULL pointer dereference in Linux kernel usb
Published: December 8, 2025
Security Bulletin ID
SB2025120898
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-40275)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the snd_usb_mixer_controls_badd() function in sound/usb/mixer.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4
- https://git.kernel.org/stable/c/2762d3ea9c929ca4094541ca517c317ffa94625b
- https://git.kernel.org/stable/c/57f607c112966c21240c424b33e2cb71e121dcf0
- https://git.kernel.org/stable/c/632108ec072ad64c8c83db6e16a7efee29ebfb74
- https://git.kernel.org/stable/c/85568535893600024d7d8794f4f8b6428b521e0c
- https://git.kernel.org/stable/c/9f282104627be5fbded3102ff9004f753c55a063
- https://git.kernel.org/stable/c/c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6
- https://git.kernel.org/stable/c/cbdbfc756f2990942138ed0138da9303b4dbf9ff