CVE-2026-68274

Kernel memory corruption via undersized register list

Published Aug 10, 2026 · Updated Aug 10, 2026

An out-of-bounds write in Linux 6.13 through 6.18.43 and 6.19 through 7.1.5 allows local users to corrupt kernel memory. In drivers/gpu/drm/xe/xe_guc_capture.c, allocation counts only geometry DSS bits while for_each_dss_steering() writes entries for geometry and compute DSS bits. A system must use the xe driver on hardware with compute-only DSS bits; the overflow corrupts adjacent slab objects and can crash the kernel during device unbind.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in Linux 6.13 through 6.18.43 and 6.19 through 7.1.5 allows local users to corrupt kernel memory. In drivers/gpu/drm/xe/xe_guc_capture.c, allocation counts only geometry DSS bits while for_each_dss_steering() writes entries for geometry and compute DSS bits. A system must use the xe driver on hardware with compute-only DSS bits; the overflow corrupts adjacent slab objects and can crash the kernel during device unbind.

The record

CVE
CVE-2026-68274
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, 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=6.13
  2. Affected versionversion=b170d696c1e2226713471d810c63b1162335079f <632ecc90e1ca5d3b6822bb4d08f84a175b6c42c0
  3. Affected versionversion=b170d696c1e2226713471d810c63b1162335079f <a9a020f3c11eba6573b699f9cf9245a51b025ade
  4. Affected versionversion=b170d696c1e2226713471d810c63b1162335079f <b485bfb45555163bfa5f565d6a3415fcb3035b02

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.13; version=b170d696c1e2226713471d810c63b1162335079f <632ecc90e1ca5d3b6822bb4d08f84a175b6c42c0; version=b170d696c1e2226713471d810c63b1162335079f <a9a020f3c11eba6573b699f9cf9245a51b025ade; version=b170d696c1e2226713471d810c63b1162335079f <b485bfb45555163bfa5f565d6a3415fcb3035b02

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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