REDHAT-BUG-736425: Medium severity red hat linux vulnerability
When interface is put in promiscuous mode and it receives VLAN packets, but no VLANS are configured on that interface , then the kernel crashes in the 8021q module.
Acknowledgements:
Red Hat would like to thank Somnath Kotur for reporting this issue.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-736425?
The severity of REDHAT-BUG-736425 is considered critical due to the kernel crash in situations involving promiscuous mode and VLAN packets.
How do I fix REDHAT-BUG-736425?
To fix REDHAT-BUG-736425, ensure that VLAN configurations are properly set on interfaces that need to operate in promiscuous mode.
What versions of the Red Hat Linux Kernel are affected by REDHAT-BUG-736425?
The affected versions of the Red Hat Linux Kernel include those that allow interfaces to be placed in promiscuous mode without VLANs configured.
What causes the issue in REDHAT-BUG-736425?
REDAHT-BUG-736425 is caused by the kernel crashing in the 8021q module when VLAN packets are received on a promiscuous mode interface without VLAN configuration.
Is there a workaround for REDHAT-BUG-736425 until a fix is applied?
A temporary workaround for REDHAT-BUG-736425 is to disable promiscuous mode on the affected interfaces until a fix can be implemented.