CVE-2026-68331

Description

In the Linux kernel, the following vulnerability has been resolved: dpaa2-eth: put MAC endpoint device on disconnect fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The Ethernet connect path stores that device in mac->mc_dev and keeps it for the lifetime of the connected MAC object. However, the disconnect path only disconnects and closes the MAC before freeing the dpaa2_mac object. It does not drop the endpoint device reference stored in mac->mc_dev, so every successful connect leaks that device reference when the MAC is later disconnected. Drop the endpoint device reference after closing the MAC and before freeing the dpaa2_mac object.

References

• https://git.kernel.org/stable/c/915012e923316b8b5d5bf8fc771617b47bd7572d
• https://git.kernel.org/stable/c/a3cecf169cc652b558d08661bb6ce55e4c933ec0
• https://git.kernel.org/stable/c/b4b201cc93ff70150853aba03e14d314d1980ca0
• https://git.kernel.org/stable/c/e23e4a3b9dfd893469c731318d409cdf04fb1ddf
• https://git.kernel.org/stable/c/f112df0744e2d77baa68eeebb860021bbaaa022a