CVE-2024-57801: net/mlx5e: Skip restore TC rules for vport rep without loaded flag

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-01-15 · updated 2026-06-17
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Skip restore TC rules for vport rep without loaded flag During driver unload, unregister_netdev is called after unloading vport rep. So, the mlx5e_rep_priv is already freed while trying to get rpriv->netdev, or walk rpriv->tc_ht, which results in use-after-free. So add the checking to make sure access the data of vport rep which is still loaded.

Affected products

Linux kernel: from 6.6 before 6.6.70; from 6.7 before 6.12.9; 6.13-rc1, 6.13-rc2, 6.13-rc3, 6.13-rc4, 6.13-rc5 — fixed in 6.12.9, 6.6.70

How to fix

Upgrade to a fixed version: Linux kernel 6.12.9, 6.6.70. Check the vendor advisory for mitigations.

References

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