SB20250619155 - Use-after-free in Linux kernel netfilter
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619155
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-2022-50213)
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_set_lookup_byhandle(), nft_set_lookup_byid() and nft_set_lookup_global() 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/0d07039397527361850c554c192e749cfc879ea9
- https://git.kernel.org/stable/c/1a4b18b1ff11ba26f9a852019d674fde9d1d1cff
- https://git.kernel.org/stable/c/470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2
- https://git.kernel.org/stable/c/77d3b5038b7462318f5183e2ad704b01d57215a2
- https://git.kernel.org/stable/c/f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6f
- https://git.kernel.org/stable/c/faafd9286f1355c76fe9ac3021c280297213330e
- https://git.kernel.org/stable/c/fab2f61cc3b0e441b1749f017cfee75f9bbaded7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.211