CVE-2026-43013

MEDIUM EPSS 2.4%
Published May 1, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: lag: Check for LAG device before creating debugfs __mlx5_lag_dev_add_mdev() may return 0 (success) even when an error occurs that is handled gracefully. Consequently, the initialization flow proceeds to call mlx5_ldev_add_debugfs() even when there is no valid LAG context. mlx5_ldev_add_debugfs() blindly created the debugfs directory and attributes. This exposed interfaces (like the members file) that rely on a valid ldev pointer, leading to potential NULL pointer dereferences if accessed when ldev is NULL. Add a check to verify that mlx5_lag_dev(dev) returns a valid pointer before attempting to create the debugfs entries.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.19  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456
    Patch