CVE-2024-36887 Information

Description

In the Linux kernel the following vulnerability has been resolved:

e1000e: change usleep_range to udelay in PHY mdic access

This is a partial revert of commit 6dbdd4de0362 (1000e: Workaround for sporadic MDI error on Meteor Lake systems). The referenced commit used usleep_range inside the PHY access routines which are sometimes called from an atomic context. This can lead to a kernel panic in some scenarios such as cable disconnection and reconnection on vPro systems.

Solve this by changing the usleep_range calls back to udelay.

Reference

https://git.kernel.org/stable/c/f8a139656c95db893a543159873c57a470d7376d https://git.kernel.org/stable/c/950d5226cd6bb83ba720961a8d4d5cf79e6afd57 https://git.kernel.org/stable/c/387f295cb2150ed164905b648d76dfcbd3621778