SB20240620184 - NULL pointer dereference in Linux kernel selinux ss
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620184
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-2022-48740)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the cond_list_destroy() and cond_read_list() functions in security/selinux/ss/conditional.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/f446089a268c8fc6908488e991d28a9b936293db
- https://git.kernel.org/stable/c/70caa32e6d81f45f0702070c0e4dfe945e92fbd7
- https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4
- https://git.kernel.org/stable/c/186edf7e368c40d06cf727a1ad14698ea67b74ad
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.99
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17