#VU90660 NULL pointer dereference in Linux kernel - CVE-2023-52463
Published: June 1, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90660
Vulnerability risk: 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-2023-52463
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 efivarfs_get_tree() function in fs/efivarfs/super.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/94c742324ed7e42c5bd6a9ed22e4ec6d764db4d8
- https://git.kernel.org/stable/c/2aa141f8bc580f8f9811dfe4e0e6009812b73826
- https://git.kernel.org/stable/c/d4a9aa7db574a0da64307729cc031fb68597aa8b
- https://git.kernel.org/stable/c/0049fe7e4a85849bdd778cdb72e51a791ff3d737
- https://git.kernel.org/stable/c/d4a714873db0866cc471521114eeac4a5072d548
- https://git.kernel.org/stable/c/0e8d2444168dd519fea501599d150e62718ed2fe
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.148
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8