#VU104433 Use-after-free in Linux kernel - CVE-2022-49362
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104433
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-2022-49362
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 nfsd_file_put() function in fs/nfsd/filecache.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/261eabe19cb28e4a8587a4442d257b543d7c2d57
- https://git.kernel.org/stable/c/333dcc94ebf53f79f3dc0e7a7c16700bc7ff7e57
- https://git.kernel.org/stable/c/ada1757b259f353cade47037ee0a0249b4cddad3
- https://git.kernel.org/stable/c/b6c71c66b0ad8f2b59d9bc08c7a5079b110bec01
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.220
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.154
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19