CVE-2026-43013 (GCVE-0-2026-43013)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-11 22:16
VLAI
Title
net/mlx5: lag: Check for LAG device before creating debugfs
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7f46a0b7327ae261f9981888708dbca22c283900 , < a3db46d5f4df92630a96f7bc77b60e75c2353e06 (git)
Affected: 7f46a0b7327ae261f9981888708dbca22c283900 , < 7129632cab3e4d23510b21930aa73b8d97a859f5 (git)
Affected: 7f46a0b7327ae261f9981888708dbca22c283900 , < cfa774e6c920c81e700327bf10db8cb50d5db456 (git)
Affected: 7f46a0b7327ae261f9981888708dbca22c283900 , < c53cf44588a93000f71817a6bb87a66353c48dee (git)
Affected: 7f46a0b7327ae261f9981888708dbca22c283900 , < 89c65f2fcd8801365b410f40a427cbcd7f4c28e9 (git)
Affected: 7f46a0b7327ae261f9981888708dbca22c283900 , < bf16bca6653679d8a514d6c1c5a2c67065033f14 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43013.json",
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}



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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.