NULL pointer dereference in Linux kernel - CVE-2023-53591
Published: October 5, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116535
CSH Severity: Low
CVSS v4.0: 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-2023-53591
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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 drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.h. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2023-53591
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/362063df6ceec80b0b6798b61ae03504dcc125a5
- https://git.kernel.org/stable/c/691c041bf20899fc13c793f92ba61ab660fa3a30
- https://git.kernel.org/stable/c/69966bce28da6aadccfd968b75d128a79da32d17
- https://git.kernel.org/stable/c/a7236e420a7d8082b1df4b3e05c739dd2642a662
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.5