SB20250619172 - Use-after-free in Linux kernel net netfilter
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619172
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-2022-50000)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nf_flow_offload_stats() function in net/netfilter/nf_flow_table_offload.c, within the nf_flow_table_free() function in net/netfilter/nf_flow_table_core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/89e135a36a9eb81412b5459df94a80995ce62eef
- https://git.kernel.org/stable/c/8fbdec08dbf7d7ab8e35bdc65eb4394bc82d1e26
- https://git.kernel.org/stable/c/9afb4b27349a499483ae0134282cefd0c90f480f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0