CVE-2021-47164: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix null deref accessing lag dev It could be the lag dev is null so stop processing the event. In bond_enslave() the active/backup slave being set before setting the upper dev so first event is without an upper dev. After setting the upper dev with bond_master_upper_dev_link() there is a second event and in that event we have an upper dev.

Affected products

• Linux Linux Kernel: from 5.8, before 5.10.42 (fixed in 5.10.42); from 5.11, before 5.12.9 (fixed in 5.12.9)

Published 2024-03-25. Last modified 2026-06-17.