Memory leak in Linux kernel - CVE-2025-21751
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104937
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2025-21751
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the hws_matcher_disconnect() function in drivers/net/ethernet/mellanox/mlx5/core/steering/hws/matcher.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2025-21751
Install update from vendor's website.
Linux kernel - update to 6.13.3
linux (Debian package) - update to 6.12.48-1
linux (Debian package) - update to 6.12.48-1