SB20250226271 - Use-after-free in Linux kernel net netfilter
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226271
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-2022-49622)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the DEFINE_STATIC_KEY_FALSE(), nft_trace_notify() and nft_trace_init() functions in net/netfilter/nf_tables_trace.c, within the __nft_trace_packet(), nft_trace_packet() and __nft_trace_verdict() functions in net/netfilter/nf_tables_core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.