CVE-2023-53999
kernel: Linux kernel: Denial of Service due to memory leak in mlx5e driver
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 24, 2025
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel. This memory leak vulnerability occurs when a flow rule, forwarding packets from an internal port over a tunnel, is split and extra post-action rules are added. The int_port object's reference count is incremented but never decremented, leading to the object not being freed. This can result in a denial of service (DoS) due to memory exhaustion.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime