NULL pointer dereference in Linux kernel - CVE-2022-48741
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92910
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-48741
CWE-ID: CWE-476
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 perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ovl_copy_fileattr() function in fs/overlayfs/copy_up.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/e6b678c1a3673de6a5d2f4e22bb725a086a0701a
- https://git.kernel.org/stable/c/9c7f8a35c5a83740c0e3ea540b6ad145c50d79aa
- https://git.kernel.org/stable/c/4ee7e4a6c9b298da44029ed9ec8ed23ae49cc209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17