CVE-2021-47164

net/mlx5e: Fix null deref accessing lag dev

Description

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.

References

Link	Tags
https://git.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587	patch
https://git.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d	patch
https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55	patch

Frequently Asked Questions

What is the severity of CVE-2021-47164?: CVE-2021-47164 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47164?: To fix CVE-2021-47164, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47164 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-47164 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47164?: CVE-2021-47164 affects Linux Linux, Linux Linux.

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Description

Category

CWE-476 – NULL Pointer Dereference

References

Frequently Asked Questions