SB20240530165 - Use-after-free in Linux kernel j1939
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240530165
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-47459)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the j1939_netdev_start() function in net/can/j1939/main.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/a0e47d2833b4f65e6c799f28c6b636d36b8b936d
- https://git.kernel.org/stable/c/864e77771a24c877aaf53aee019f78619cbcd668
- https://git.kernel.org/stable/c/6e8811707e2df0c6ba920f0cad3a3bca7b42132f
- https://git.kernel.org/stable/c/d9d52a3ebd284882f5562c88e55991add5d01586
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.76
- 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-5.4.156