SB20250327127 - NULL pointer dereference in Linux kernel firmware efi driver
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250327127
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-2023-52976)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the efi_mem_reserve_persistent() function in drivers/firmware/efi/efi.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/87d4ff18738fd71e7e3c10827c80257da6283697
- https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909
- https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afc
- https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c
- https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.232