SB20250402103 - Use of uninitialized resource in Linux kernel netfilter
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250402103
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) Use of uninitialized resource (CVE-ID: CVE-2025-21959)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to use of uninitialized resource within the raw_smp_processor_id() function in net/netfilter/nf_conncount.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/2db5baaf047a7c8d6ed5e2cc657b7854e155b7fc
- https://git.kernel.org/stable/c/a62a25c6ad58fae997f48a0749afeda1c252ae51
- https://git.kernel.org/stable/c/d653bfeb07ebb3499c403404c21ac58a16531607
- https://git.kernel.org/stable/c/db1e0c0856821c59a32ea3af79476bf20a6beeb2
- https://git.kernel.org/stable/c/fda50302a13701d47fbe01e1739c7a51114144fb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.84