CVE-2024-36973

Kernel memory corruption via redundant probe cleanup

Published Jun 17, 2024 · Updated Aug 5, 2026

A double free in the Linux kernel allows attackers to corrupt kernel memory during PCI1XXXX auxiliary-device probe failures. In gp_aux_bus_probe(), auxiliary_device_uninit() invokes gp_auxiliary_device_release() to free the ID and wrapper, but the error path repeats ida_free() and kfree() on the same objects. Reachability requires local PCI enumeration or hotplug of a matching endpoint that makes auxiliary_device_add() fail; resulting heap corruption can panic the kernel or enable kernel-memory reads and writes.

CVSS severity8.4
High
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

A double free in the Linux kernel allows attackers to corrupt kernel memory during PCI1XXXX auxiliary-device probe failures. In gp_aux_bus_probe(), auxiliary_device_uninit() invokes gp_auxiliary_device_release() to free the ID and wrapper, but the error path repeats ida_free() and kfree() on the same objects. Reachability requires local PCI enumeration or hotplug of a matching endpoint that makes auxiliary_device_add() fail; resulting heap corruption can panic the kernel or enable kernel-memory reads and writes.

The record

CVE
CVE-2024-36973
Published
Jun 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 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=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <086c6cbcc563c81d55257f9b27e14faf1d0963d3
  2. Affected versionversion=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <1efe551982297924d05a367aa2b6ec3d275d5742
  3. Affected versionversion=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <34ae447b138680b5ed3660f7d935ff3faf88ba1a
  4. Affected versionversion=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <86c9713602f786f441630c4ee02891987f8618b9
  5. Affected versionversion=6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <086c6cbcc563c81d55257f9b27e14faf1d0963d3; version=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <1efe551982297924d05a367aa2b6ec3d275d5742; version=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <34ae447b138680b5ed3660f7d935ff3faf88ba1a; version=393fc2f5948fd340d016a9557eea6e1ac2f6c60c <86c9713602f786f441630c4ee02891987f8618b9; version=6.1

Published CVSS scores

8.4Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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