SB20240531125 - Use-after-free in Linux kernel spi driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531125
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) Use-after-free (CVE-ID: CVE-2021-47195)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the spi_unregister_controller() function in drivers/spi/spi.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/37330f37f6666c7739a44b2b6b95b047ccdbed2d
- https://git.kernel.org/stable/c/6c53b45c71b4920b5e62f0ea8079a1da382b9434
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.230
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.286