NULL pointer dereference in Linux kernel - CVE-2023-52779
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90417
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-2023-52779
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 vfs_getattr_nosec() and vfs_getattr() functions in fs/stat.c, within the ovl_getattr() function in fs/overlayfs/inode.c, within the ecryptfs_getattr_link() and ecryptfs_getattr() functions in fs/ecryptfs/inode.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.