CVE-2026-68305

Local system crash via unguarded CCS teardown

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL pointer dereference in Linux 6.18 through 7.1.5 and 7.2 release candidates before 7.2-rc5 allows local users to crash Intel Xe VF systems. During CCS read/write buffer detachment, xe_sriov_vf_ccs_rw_update_bb_addr accesses device resources without a drm_dev guard after device unbinding. A local low-privileged user must exercise an Intel Xe virtual-function configuration; the resulting kernel NULL dereference crashes the system.

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

NULL pointer dereference in Linux 6.18 through 7.1.5 and 7.2 release candidates before 7.2-rc5 allows local users to crash Intel Xe VF systems. During CCS read/write buffer detachment, xe_sriov_vf_ccs_rw_update_bb_addr accesses device resources without a drm_dev guard after device unbinding. A local low-privileged user must exercise an Intel Xe virtual-function configuration; the resulting kernel NULL dereference crashes the system.

The record

CVE
CVE-2026-68305
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
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=6.18
  2. Affected versionversion=864690cf4dd62482b6dd049d82c509886c904303 <4c92afb4c143526d340545ca581e88e6952ea511
  3. Affected versionversion=864690cf4dd62482b6dd049d82c509886c904303 <523ed2831ee55b2a1edabdea96781651f9df9685

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.18; version=864690cf4dd62482b6dd049d82c509886c904303 <4c92afb4c143526d340545ca581e88e6952ea511; version=864690cf4dd62482b6dd049d82c509886c904303 <523ed2831ee55b2a1edabdea96781651f9df9685

Published CVSS scores

7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS: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

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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