SB2024060124 - NULL pointer dereference in Linux kernel efivarfs
Published: June 1, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060124
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2023-52463)
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.
References
- 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