CVE-2024-58083

Kernel memory corruption via freed vCPU0 access

Published Mar 6, 2025 · Updated Aug 5, 2026

Use-after-free in KVM in affected Linux kernel versions allows local users with KVM access to trigger kernel memory corruption. The kvm_get_vcpu() helper clamps an invalid vCPU index to zero and returns vCPU0 before it is fully online, rather than returning NULL. If vCPU creation then fails and frees vCPU0, a later dereference accesses freed memory; the path requires local KVM access and a creation error.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in KVM in affected Linux kernel versions allows local users with KVM access to trigger kernel memory corruption. The kvm_get_vcpu() helper clamps an invalid vCPU index to zero and returns vCPU0 before it is fully online, rather than returning NULL. If vCPU creation then fails and frees vCPU0, a later dereference accesses freed memory; the path requires local KVM access and a creation error.

The record

CVE
CVE-2024-58083
Published
Mar 6, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2025CVE 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=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <09d50ccf0b2d739db4a485b08afe7520a4402a63
  2. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <125da53b3c0c9d7f58353aea0076e9efd6498ba7
  3. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <1e7381f3617d14b3c11da80ff5f8a93ab14cfc46
  4. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <5cce2ed69b00e022b5cdf0c49c82986abd2941a8
  5. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <7c4899239d0f70f88ac42665b3da51678d122480
  6. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <ca8da90ed1432ff3d000de4f1e2275d4e7d21b96
  7. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <d817e510662fd1c9797952408d94806f97a5fffd
  8. Affected versionversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <f2f805ada63b536bc192458a7098388286568ad4
  9. Affected versionversion=4.14.120 <4.15
  10. Affected versionversion=4.19.44 <4.20
  11. Affected versionversion=5.0.17 <5.1
  12. Affected versionversion=5.1
  13. Affected versionversion=559e2696d2f47a3575e9550f101a7e59e30b1b38
  14. Affected versionversion=7cee966029037a183d98cb88251ceb92a233fe63
  15. Affected versionversion=d39f3cc71382165bb7efb8e06a2bd32f847de4ae

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <09d50ccf0b2d739db4a485b08afe7520a4402a63; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <125da53b3c0c9d7f58353aea0076e9efd6498ba7; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <1e7381f3617d14b3c11da80ff5f8a93ab14cfc46; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <5cce2ed69b00e022b5cdf0c49c82986abd2941a8; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <7c4899239d0f70f88ac42665b3da51678d122480; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <ca8da90ed1432ff3d000de4f1e2275d4e7d21b96; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <d817e510662fd1c9797952408d94806f97a5fffd; version=1d487e9bf8ba66a7174c56a0029c54b1eca8f99c <f2f805ada63b536bc192458a7098388286568ad4; version=4.14.120 <4.15; version=4.19.44 <4.20; version=5.0.17 <5.1; version=5.1; version=559e2696d2f47a3575e9550f101a7e59e30b1b38; version=7cee966029037a183d98cb88251ceb92a233fe63; version=d39f3cc71382165bb7efb8e06a2bd32f847de4ae

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-416Use After Free
T1068Exploitation for Privilege Escalation

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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