SB20250619143 - Use-after-free in Linux kernel of driver
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619143
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-2022-50159)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ima_get_kexec_buffer() function in drivers/of/kexec.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1b2263d6c86fca8f30e18231778393bfc287bb27
- https://git.kernel.org/stable/c/beb5bba5dd132650c073f815c685c60c3e5b783b
- https://git.kernel.org/stable/c/cbf9c4b9617b6767886a913705ca14b7600c77db
- https://git.kernel.org/stable/c/dc3b8525f83ac6bbc885bb24bbb8a76f4622200e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18