Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
can: bcm: add missing rcu read protection for procfs content
When the procfs content is generated for a bcm_op which is in the process to be removed the procfs output might show unreliable data (UAF).
As the removal of bcm_op’s is already implemented with rcu handling this patch adds the missing rcu_read_lock() and makes sure the list entries are properly removed under rcu protection.
Details
- Affected product:
- Oracle Linux 7 ELS
- Affected packages:
- kernel-uek @ 5.4.17
In the Linux kernel, the following vulnerability has been resolved:
can: bcm: add missing rcu read protection for procfs content
When the procfs content is generated for a bcm_op which is in the process to be removed the procfs output might show unreliable data (UAF).
As the removal of bcm_op’s is already implemented with rcu handling this patch adds the missing rcu_read_lock() and makes sure the list entries are properly removed under rcu protection.