CVE-2025-39834

MEDIUM

Linux Kernel 6.12-6.16.5 - Use-After-Free in mlx5 HWS Action Shared STC Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, Fix memory leak in hws_action_get_shared_stc_nic error flow When an invalid stc_type is provided, the function allocates memory for shared_stc but jumps to unlock_and_out without freeing it, causing a memory leak. Fix by jumping to free_shared_stc label instead to ensure proper cleanup.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/051fd8576a2e4e95d5870c5c9f8679c5b16882e4

Patch

https://git.kernel.org/stable/c/a630f83592cdad1253523a1b760cfe78fef6cd9c

Scores

CVSS v3 5.5

EPSS 0.0012

EPSS Percentile 2.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (9)

linux/Kernel 6.12.0 - 6.16.5linux

Linux/Linux < 6.12

Linux/Linux 504e536d90104c850731840d3fbc95acf251f11b - 051fd8576a2e4e95d5870c5c9f8679c5b16882e4

Linux/Linux 504e536d90104c850731840d3fbc95acf251f11b - a630f83592cdad1253523a1b760cfe78fef6cd9c

Linux/Linux 6.12

Linux/Linux 6.16.5 - 6.16.*

Linux/Linux 6.17

linux/linux_kernel 6.17 rc1 (3 CPE variants)

linux/linux_kernel 6.12 - 6.16.5

Published Sep 16, 2025

Tracked Since Feb 18, 2026