CVE-2024-36887: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.6.26 — 6.6.31
linux	linux_kernel	6.8.5 — 6.8.10
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2024-36887? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36887? +

CVE-2024-36887 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-36887? +

CVE-2024-36887 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-36887? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-36887