CVE-2024-36887

Kernel panic via sleeping PHY access

Published May 30, 2024 · Updated May 11, 2026

Denial of service in Linux 6.6.26 through 6.6.30 and 6.8.5 through 6.8.9 allows local users to panic the kernel through e1000e PHY access. The e1000e PHY access routines call usleep_range while executing in atomic context, where sleeping violates kernel scheduling constraints. Reaching the panic requires affected e1000e hardware and a PHY operation in atomic context; cable disconnection and reconnection on vPro systems is a documented trigger.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux 6.6.26 through 6.6.30 and 6.8.5 through 6.8.9 allows local users to panic the kernel through e1000e PHY access. The e1000e PHY access routines call usleep_range while executing in atomic context, where sleeping violates kernel scheduling constraints. Reaching the panic requires affected e1000e hardware and a PHY operation in atomic context; cable disconnection and reconnection on vPro systems is a documented trigger.

The record

CVE
CVE-2024-36887
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0a4e3c2d976aa4dd38951afd6267f74ef3fade0e <950d5226cd6bb83ba720961a8d4d5cf79e6afd57
  2. Affected versionversion=1d16cd91cd319d5bf6230c8493feb56a61e486a1 <f8a139656c95db893a543159873c57a470d7376d
  3. Affected versionversion=6.6.26 <6.6.31
  4. Affected versionversion=6.8.5 <6.8.10
  5. Affected versionversion=6dbdd4de0362c37e54e8b049781402e5a409e7d0 <387f295cb2150ed164905b648d76dfcbd3621778

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0a4e3c2d976aa4dd38951afd6267f74ef3fade0e <950d5226cd6bb83ba720961a8d4d5cf79e6afd57; version=1d16cd91cd319d5bf6230c8493feb56a61e486a1 <f8a139656c95db893a543159873c57a470d7376d; version=6.6.26 <6.6.31; version=6.8.5 <6.8.10; version=6dbdd4de0362c37e54e8b049781402e5a409e7d0 <387f295cb2150ed164905b648d76dfcbd3621778

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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