SB20250619153 - Use-after-free in Linux kernel netfilter
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619153
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-2022-50212)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nft_chain_lookup_byid(), nf_tables_newrule() and nft_verdict_init() functions in net/netfilter/nf_tables_api.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0f49613a213d918af790c1276f79da741968de11
- https://git.kernel.org/stable/c/58e863f64ee3d0879297e5e53b646e4b91e59620
- https://git.kernel.org/stable/c/91501513016903077f91033fa5d2aa26cac399b2
- https://git.kernel.org/stable/c/95f466d22364a33d183509629d0879885b4f547e
- https://git.kernel.org/stable/c/9e7dcb88ec8e85e4a8ad0ea494ea2f90f32d2583
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.137