CVE-2026-43013

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43013
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5 Patch
https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9 Patch
https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06 Patch
https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14 Patch
https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee Patch
https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
History

07 May 2026, 20:28

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5 - () https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5 - Patch
References () https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9 - () https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9 - Patch
References () https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06 - () https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06 - Patch
References () https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14 - () https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14 - Patch
References () https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee - () https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee - Patch
References () https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456 - () https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456 - Patch

01 May 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-01 15:16

Updated : 2026-06-17 10:48

NVD link : CVE-2026-43013

Mitre link : CVE-2026-43013

CVE.ORG link : CVE-2026-43013

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference