#VU115890 Use-after-free in Linux kernel - CVE-2022-50401
Published: September 19, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115890
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-2022-50401
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 setup_callback_client() function in fs/nfsd/nfs4callback.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/15fc60aa5bdcf6d5f93000d3d00579fc67632ee0
- https://git.kernel.org/stable/c/3bc8edc98bd43540dbe648e4ef91f443d6d20a24
- https://git.kernel.org/stable/c/707bcca9616002d204091ca7c4d1d91151104332
- https://git.kernel.org/stable/c/9b4ae8c42d2ff09ed7c5832ccce5684c55e5ed23
- https://git.kernel.org/stable/c/a472f069ced8601979f53c13c0cf20236074ed46
- https://git.kernel.org/stable/c/c1207219a4bfa50121c9345d5d165470d0a82531
- https://git.kernel.org/stable/c/d843ebd860c58a38e45527e8ec6516059f4c97f3
- https://git.kernel.org/stable/c/e2f9f03e4537f3fcc8fd2bdd3248530c3477a371
- https://git.kernel.org/stable/c/fddac3b4578d302ac9e51e7f03a9aae6254ae2a3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229