CVE-2024-55639

In the Linux kernel, the following vulnerability has been resolved:

net: renesas: rswitch: avoid use-after-put for a device tree node

The device tree node saved in the rswitch_device structure is used at several driver locations. So passing this node to of_node_put() after the first use is wrong.

Move of_node_put() for this node to exit paths.

This vulnerability presents negligible risk to Red Hat environments as the Renesas Ethernet switch driver was introduced in upstream kernel releases newer than the kernels maintained in supported Red Hat Enterprise Linux versions. Additionally, exploitation necessitates specialized Renesas automotive SoC hardware that is not targeted or deployed by standard enterprise platforms. As a result, supported Red Hat products are not affected by this flaw.