CVE-2024-46678

Kernel service interruption via sleep under spinlock

Published Sep 13, 2024 · Updated Aug 5, 2026

Improper locking in Linux kernel bonding from 5.14 allows local users to trigger an atomic-context scheduling fault during slave changes. The bonding code invokes sleep-capable XFRM device state callbacks while holding the spin-based ipsec_lock that protects ipsec_list. Reaching the fault requires a bonded interface using IPsec hardware offload and an active-slave change; the resulting scheduler violation can interrupt kernel service.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in Linux kernel bonding from 5.14 allows local users to trigger an atomic-context scheduling fault during slave changes. The bonding code invokes sleep-capable XFRM device state callbacks while holding the spin-based ipsec_lock that protects ipsec_list. Reaching the fault requires a bonded interface using IPsec hardware offload and an active-slave change; the resulting scheduler violation can interrupt kernel service.

The record

CVE
CVE-2024-46678
Published
Sep 13, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=42ec69b9cd7d1f9a8b7420807f3a5d899ca99d28
  2. Affected versionversion=5.10.54 <5.11
  3. Affected versionversion=5.13.6 <5.14
  4. Affected versionversion=5.14
  5. Affected versionversion=56ccdf868ab6010739a24a3d72c3e53fd0e1ace2
  6. Affected versionversion=9a5605505d9c7dbfdb89cc29a8f5fc5cf9fd2334 <2aeeef906d5a526dc60cf4af92eda69836c39b1f
  7. Affected versionversion=9a5605505d9c7dbfdb89cc29a8f5fc5cf9fd2334 <56354b0a2c24a7828eeed7de4b4dc9652d9affa3
  8. Affected versionversion=9a5605505d9c7dbfdb89cc29a8f5fc5cf9fd2334 <6b598069164ac1bb60996d6ff94e7f9169dbd2d3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=42ec69b9cd7d1f9a8b7420807f3a5d899ca99d28; version=5.10.54 <5.11; version=5.13.6 <5.14; version=5.14; version=56ccdf868ab6010739a24a3d72c3e53fd0e1ace2; version=9a5605505d9c7dbfdb89cc29a8f5fc5cf9fd2334 <2aeeef906d5a526dc60cf4af92eda69836c39b1f; version=9a5605505d9c7dbfdb89cc29a8f5fc5cf9fd2334 <56354b0a2c24a7828eeed7de4b4dc9652d9affa3; version=9a5605505d9c7dbfdb89cc29a8f5fc5cf9fd2334 <6b598069164ac1bb60996d6ff94e7f9169dbd2d3

Published CVSS scores

5.5NISTCVSS: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

CWE-667Improper Locking
T1499Endpoint Denial of Service

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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