CVE-2026-52950

Kernel memory corruption via freed buffer retry

Published Jun 24, 2026 · Updated Jun 24, 2026

Use-after-free in Linux Kernel 6.18 allows local users to corrupt kernel memory through the Xe DRM dma-buf import path. The retry path reuses bo after error handling frees the buffer object, causing the next iteration to dereference freed kernel memory. The ioctl requires low-privilege local access to an Intel Xe DRM render node; exploitation can crash the system or execute code with kernel privileges.

CVSS severity7.8
High
EPSS probability0.14%
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 Linux Kernel 6.18 allows local users to corrupt kernel memory through the Xe DRM dma-buf import path. The retry path reuses bo after error handling frees the buffer object, causing the next iteration to dereference freed kernel memory. The ioctl requires low-privilege local access to an Intel Xe DRM render node; exploitation can crash the system or execute code with kernel privileges.

The record

CVE
CVE-2026-52950
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-825, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=6.18
  2. Affected versionversion=eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 <155a372a1cc50fa93387c5d3cdfd614a61e1afd1
  3. Affected versionversion=eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 <39fdac6be02eb7c3460518c1c4085f75f935c4ce
  4. Affected versionversion=eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 <827062952ed9bdf4220466c1f05ce452d04bdedf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.18; version=eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 <155a372a1cc50fa93387c5d3cdfd614a61e1afd1; version=eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 <39fdac6be02eb7c3460518c1c4085f75f935c4ce; version=eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 <827062952ed9bdf4220466c1f05ce452d04bdedf

Published CVSS scores

7.8Linux Kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Red HatCVSS:3.1/AV:L/AC:H/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-825Expired Pointer Dereference
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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