SB2025050441 - NULL pointer dereference in Linux kernel ext4
Published: May 4, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050441
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-2023-53091)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ext4_load_journal() function in fs/ext4/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/3039d8b8692408438a618fac2776b629852663c3
- https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925
- https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955
- https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8