SB20240620185 - NULL pointer dereference in Linux kernel overlayfs
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620185
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-2022-48741)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ovl_copy_fileattr() function in fs/overlayfs/copy_up.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/e6b678c1a3673de6a5d2f4e22bb725a086a0701a
- https://git.kernel.org/stable/c/9c7f8a35c5a83740c0e3ea540b6ad145c50d79aa
- https://git.kernel.org/stable/c/4ee7e4a6c9b298da44029ed9ec8ed23ae49cc209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17