SB2025112409 - Red Hat Enterprise Linux 9 update for kernel
Published: November 24, 2025
Security Bulletin ID
SB2025112409
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) Improper locking (CVE-ID: CVE-2025-39843)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the get_track(), set_track_update(), free_debug_processing(), ___slab_alloc() and free_to_partial_list() functions in mm/slub.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.