Description

In the Linux kernel, the following vulnerability has been resolved: phy: tegra: xusb: Clear the driver reference in usb-phy dev For the dual-role port, it will assign the phy dev to usb-phy dev and use the port dev driver as the dev driver of usb-phy. When we try to destroy the port dev, it will destroy its dev driver as well. But we did not remove the reference from usb-phy dev. This might cause the use-after-free issue in KASAN.

References 5

• git.kernel.org https://git.kernel.org/stable/c/238edc04ddb9d272b38f5419bcd419ad3b92b91b
• git.kernel.org https://git.kernel.org/stable/c/82187460347ad58fd6b06d2883da73c3f2df9631
• git.kernel.org https://git.kernel.org/stable/c/b6a107c52073496d2e5d2837915f59fb3103832f
• git.kernel.org https://git.kernel.org/stable/c/b84998a407a882991916b1a61d987c400d8a0ce6
• git.kernel.org https://git.kernel.org/stable/c/c0c2fcb1325d0d4f3b322b5ee49385f8eca2560d

Remediation