#VU120396 Use-after-free in Linux kernel - CVE-2022-50753
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120396
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-2022-50753
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 check_index_in_prev_nodes() function in fs/f2fs/recovery.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/0922ad64ccefa3e483e84355942b86e13c8fea68
- https://git.kernel.org/stable/c/4a8e8bf280703e04e0b9d91f101e1fdd9a5bd09e
- https://git.kernel.org/stable/c/73687c53919f49dff3852155621dab7a35c52854
- https://git.kernel.org/stable/c/c6ad7fd16657ebd34a87a97d9588195aae87597d
- https://git.kernel.org/stable/c/c99860f9a75079f339ed7670425b1ac58f26e2ff
- https://git.kernel.org/stable/c/e168f819bfa42459b14f479e55ebd550bcc78899
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17