What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-30 · updated 2026-06-17

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.

Affected products

• Linux kernel: from 6.6.26 before 6.6.31; from 6.8.5 before 6.8.10; 6.9-rc3, 6.9-rc4, 6.9-rc5, 6.9-rc6 — fixed in 6.6.31, 6.8.10

How to fix

Upgrade to a fixed version: Linux kernel 6.6.31, 6.8.10. Check the vendor advisory for mitigations.

References

• 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

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