SB2025100520 - NULL pointer dereference in Linux kernel proc
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100520
CSH 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 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-50502)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the show_smaps_rollup() function in fs/proc/task_mmu.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.