SB2025040280 - Improper locking in Linux kernel gpio driver
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025040280
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) Improper locking (CVE-ID: CVE-2025-21943)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the new_device_store(), kfree() and delete_device_store() functions in drivers/gpio/gpio-aggregator.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/12f65d1203507f7db3ba59930fe29a3b8eee9945
- https://git.kernel.org/stable/c/56281a76b805b5ac61feb5d580139695a22f87f0
- https://git.kernel.org/stable/c/807789018186cf508ceb3a1f8f02935cd195717b
- https://git.kernel.org/stable/c/8fb07fb1bba91d45846ed8605c3097fe67a7d54c
- https://git.kernel.org/stable/c/9334c88fc2fbc6836b307d269fcc1744c69701c0
- https://git.kernel.org/stable/c/d99dc8f7ea01ee1b21306e0eda8eb18a4af80db6
- https://git.kernel.org/stable/c/fd6aa1f8cbe0979eb66ac32ebc231bf0b10a2117
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.235