#VU114518 NULL pointer dereference in Linux kernel - CVE-2025-38645
Published: August 28, 2025
Vulnerability identifier: #VU114518
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2025-38645
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mlx5_init_once() function in drivers/net/ethernet/mellanox/mlx5/core/main.c, within the mlx5_dm_create() and kfree() functions in drivers/net/ethernet/mellanox/mlx5/core/lib/dm.c, within the handle_alloc_dm_memic() function in drivers/infiniband/hw/mlx5/dm.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/3046b011d368162b1b9ca9453eee0fea930e0a93
- https://git.kernel.org/stable/c/4249f1307932f1b6bbb8b7eba60d82f0b7e44430
- https://git.kernel.org/stable/c/62d7cf455c887941ed6f105cd430ba04ee0b6c9f
- https://git.kernel.org/stable/c/70f238c902b8c0461ae6fbb8d1a0bbddc4350eea
- https://git.kernel.org/stable/c/da899a1fd7c40e2e4302af1db7d0b8540fb22283
- https://git.kernel.org/stable/c/eebb225fe6c9103293807b8edabcbad59f9589bc