SB2025092229 - Improper locking in Linux kernel mm
Published: September 22, 2025
Security Bulletin ID
SB2025092229
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.
References
- https://git.kernel.org/stable/c/243b705a90ed8449f561a271cf251fd2e939f3db
- https://git.kernel.org/stable/c/522ffe298627cfe72539d72167c2e20e72b5e856
- https://git.kernel.org/stable/c/850470a8413a8a78e772c4f6bd9fe81ec6bd5b0f
- https://git.kernel.org/stable/c/994b03b9605d36d814c611385fbf90ca6db20aa8
- https://git.kernel.org/stable/c/eb3240ffd243bfb8b1e9dc568d484ecf9fd660ab