#VU111434 Use-after-free in Linux kernel - CVE-2022-50212
Published: June 19, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111434
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-50212
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 repository.
External links
- 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