CVE-2024-53240

Guest crash via nonexistent netfront queue teardown

Published Dec 24, 2024 · Updated May 23, 2026

NULL-pointer dereference in Linux xen-netfront allows remote authenticated users controlling a network backend to crash a guest after resume. During resume, the driver releases its queue structures for reallocation, but device removal before network I/O makes teardown stop nonexistent queues. Exploitation requires a suspended and resumed Linux guest using a paravirtualized NIC with a non-trusted network backend; the bounded consequence is a guest crash.

CVSS severity5.7
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in Linux xen-netfront allows remote authenticated users controlling a network backend to crash a guest after resume. During resume, the driver releases its queue structures for reallocation, but device removal before network I/O makes teardown stop nonexistent queues. Exploitation requires a suspended and resumed Linux guest using a paravirtualized NIC with a non-trusted network backend; the bounded consequence is a guest crash.

The record

CVE
CVE-2024-53240
Published
Dec 24, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.19.269 <4.20
  2. Affected versionversion=5.10.159 <5.10.232
  3. Affected versionversion=5.15.83 <5.15.175
  4. Affected versionversion=5.4.227 <5.4.288
  5. Affected versionversion=6.0.13 <6.1
  6. Affected versionversion=6.1
  7. Affected versionversion=99859947517e446058ad7243ee81d2f9801fa3dd
  8. Affected versionversion=d50b7914fae04d840ce36491d22133070b18cca9 <7728e974ffbf14f17648dd92ea640b42b654d47c
  9. Affected versionversion=d50b7914fae04d840ce36491d22133070b18cca9 <8b41e6bccf7de93982781be4125211443382e66d
  10. Affected versionversion=d50b7914fae04d840ce36491d22133070b18cca9 <f9244fb55f37356f75c739c57323d9422d7aa0f8
  11. Affected versionversion=d50b7914fae04d840ce36491d22133070b18cca9 <fe9a8f5250aed0948b668c8a4e051e3b0fc29f09
  12. Affected versionversion=e6860c889f4ad50b6ab696f5ea154295d72cf27a <1d5354a9182b6d302ae10367cbec1ca339d4e4e7
  13. Affected versionversion=e6e897d4fe2f89c0bd94600a40bedf5e6e75e050 <2657ba851fa3381256d81e431b20041dc232fd88
  14. Affected versionversion=ed773dd798bf720756d20021b8d8a4a3d7184bda <20f7f0cf7af5d81b218202ef504223af84b16a8f
  15. Affected versionversion=f2dd60fd3fe98bd36a91b0c6e10bfe9d66258f84

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.19.269 <4.20; version=5.10.159 <5.10.232; version=5.15.83 <5.15.175; version=5.4.227 <5.4.288; version=6.0.13 <6.1; version=6.1; version=99859947517e446058ad7243ee81d2f9801fa3dd; version=d50b7914fae04d840ce36491d22133070b18cca9 <7728e974ffbf14f17648dd92ea640b42b654d47c; version=d50b7914fae04d840ce36491d22133070b18cca9 <8b41e6bccf7de93982781be4125211443382e66d; version=d50b7914fae04d840ce36491d22133070b18cca9 <f9244fb55f37356f75c739c57323d9422d7aa0f8; version=d50b7914fae04d840ce36491d22133070b18cca9 <fe9a8f5250aed0948b668c8a4e051e3b0fc29f09; version=e6860c889f4ad50b6ab696f5ea154295d72cf27a <1d5354a9182b6d302ae10367cbec1ca339d4e4e7; version=e6e897d4fe2f89c0bd94600a40bedf5e6e75e050 <2657ba851fa3381256d81e431b20041dc232fd88; version=ed773dd798bf720756d20021b8d8a4a3d7184bda <20f7f0cf7af5d81b218202ef504223af84b16a8f; version=f2dd60fd3fe98bd36a91b0c6e10bfe9d66258f84

Published CVSS scores

5.7NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8Oracle LinuxCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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