CVE-2026-68266

Kernel crash via imported dma-buf use-after-free

Published Aug 10, 2026 · Updated Aug 10, 2026

Use-after-free in the drm/xe imported buffer-object path in Linux allows local users to crash the kernel through a failed import. Before attachment succeeds, the imported buffer object retains the exporter's reservation pointer without holding the dma-buf reference, and delayed teardown later locks freed memory. Access to an Intel xe DRM render node is required; reclaiming the freed object can expose or modify kernel memory and enable privilege escalation.

CVSS severity7.8
High
EPSS probability0.13%
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 drm/xe imported buffer-object path in Linux allows local users to crash the kernel through a failed import. Before attachment succeeds, the imported buffer object retains the exporter's reservation pointer without holding the dma-buf reference, and delayed teardown later locks freed memory. Access to an Intel xe DRM render node is required; reclaiming the freed object can expose or modify kernel memory and enable privilege escalation.

The record

CVE
CVE-2026-68266
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=6.8
  2. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <62775525a27c3b0d56382e08ba81ee2d322058b6
  3. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <ba8c4cbb31c6f81fa5b12d6e28f1f706040aff48
  4. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <c1954c66662de477a8f4309335b775f7b07bd28b
  5. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <c22d65d62b3318e237c0e5b1177d90ab83d9fe06

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <62775525a27c3b0d56382e08ba81ee2d322058b6; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <ba8c4cbb31c6f81fa5b12d6e28f1f706040aff48; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <c1954c66662de477a8f4309335b775f7b07bd28b; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <c22d65d62b3318e237c0e5b1177d90ab83d9fe06

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
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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