vulnerability

Red Hat: CVE-2024-36887: kernel: e1000e: change usleep_range to udelay in PHY mdic access

Severity
4
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:C)
Published
May 30, 2024
Added
Jul 9, 2025
Modified
Jul 10, 2025

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 ("e1000e: 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.

Solution

no-fix-redhat-rpm-package
Title
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