SB2024060337 - Improper locking in Linux kernel spi driver
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060337
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-2021-47469)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the LIST_HEAD(), spi_add_device(), spi_add_device_locked(), spi_register_controller() and spi_unregister_controller() functions in drivers/spi/spi.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/722ef19a161ce3fffb3d1b01ce2301c306639bdd
- https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0
- 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-5.14.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.286