SB20250619158 - Use-after-free in Linux kernel bpf
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619158
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-2022-50219)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the find_detach_entry() and __cgroup_bpf_detach() functions in kernel/bpf/cgroup.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1f8ca9c40e6222ce431e9ba5dae3cccce8ef9443
- https://git.kernel.org/stable/c/3527e3cbb84d8868c4d4e91ba55915f96d39ec3d
- https://git.kernel.org/stable/c/4c46091ee985ae84c60c5e95055d779fcd291d87
- https://git.kernel.org/stable/c/6336388715afa419cc97d0255bda3bba1b96b7ca
- https://git.kernel.org/stable/c/be001f9da71eaa3b61e186fb88bde3279728bdca
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2