CVE-2026-72449

Kernel memory corruption via unlinked freed metadata

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in the AMD KFD component of Linux allows local users to corrupt kernel memory through repeated CRIU resume ioctls. kfd_criu_resume_svm() frees each criu_svm_metadata entry without unlinking it, leaving the list head aimed at freed objects that are traversed and freed again. Render-group access to /dev/kfd is sufficient and requires no capabilities; the resulting double-free enables a system crash or kernel-privileged code execution.

CVSS severity7.8
High
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

Use-after-free in the AMD KFD component of Linux allows local users to corrupt kernel memory through repeated CRIU resume ioctls. kfd_criu_resume_svm() frees each criu_svm_metadata entry without unlinking it, leaving the list head aimed at freed objects that are traversed and freed again. Render-group access to /dev/kfd is sufficient and requires no capabilities; the resulting double-free enables a system crash or kernel-privileged code execution.

The record

CVE
CVE-2026-72449
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <506e635aed05dbdeef11e3c59f6e42980cda5b6d
  2. Affected versionversion=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <838b57b3e7ce8cce0fda56d0861add3d464dd6c8
  3. Affected versionversion=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <8fa5655da368d0306c03e9dc9cda8ae2a7840926
  4. Affected versionversion=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <96ac562a9ea3020981f536384711190841c81aa8
  5. Affected versionversion=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <c8a8d350a273c005a48c64c4519d21b2a51c5ceb
  6. Affected versionversion=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <e33a3bd5cb8d0cf1557dee014115f812c9686130
  7. Affected versionversion=5.18

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <506e635aed05dbdeef11e3c59f6e42980cda5b6d; version=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <838b57b3e7ce8cce0fda56d0861add3d464dd6c8; version=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <8fa5655da368d0306c03e9dc9cda8ae2a7840926; version=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <96ac562a9ea3020981f536384711190841c81aa8; version=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <c8a8d350a273c005a48c64c4519d21b2a51c5ceb; version=2a909ae718715b3bac75d945e38dc0a5e4a0f1ba <e33a3bd5cb8d0cf1557dee014115f812c9686130; version=5.18

Published CVSS scores

7.8Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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

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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.

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Technologies

Your stack

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Your stack

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