SB2025100331 - Improper locking in Linux kernel mmc host driver
Published: October 3, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100331
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-2022-50430)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the vub300_enable_sdio_irq() function in drivers/mmc/host/vub300.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/32d5af247d4de6a35769ca1d027480a37c28fd0c
- https://git.kernel.org/stable/c/48e91ae755f027d817ed7e51db9963ddb7081946
- https://git.kernel.org/stable/c/4a44cd249604e29e7b90ae796d7692f5773dd348
- https://git.kernel.org/stable/c/6f7258c6f66692b3760c37ddd4bc9e02bb290da7
- https://git.kernel.org/stable/c/b51d5fed9f53e07ce9fc65efb4ff1abe021a4c16
- https://git.kernel.org/stable/c/ba2e7d07dd06e646a72ba906a89fdc1cca7ea560
- https://git.kernel.org/stable/c/d15946ef98f4ccdca961b76f90d9b53c454d590e
- https://git.kernel.org/stable/c/d58289fc77f8c1f879c818bddaf7ef524c73658b
- https://git.kernel.org/stable/c/f1c08947ab0538b07a0bd9d6edadfb5185f56344
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229