CVE-2026-68264

Local kernel compromise via retry counter overflow

Published Aug 10, 2026 · Updated Aug 10, 2026

Out-of-bounds write in the Linux kernel's Intel Xe page-table code allows local users to corrupt kernel memory through the VM_BIND ioctl. xe_pt_update_ops_init() leaves current_op unchanged across lock-contention or OOM retries, so bind_op_prepare() advances past the allocated operations array and corrupts adjacent SLUB memory. Access to an Intel Xe render node is required; an unprivileged process can panic the kernel or groom the use-after-free for privilege escalation.

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

Out-of-bounds write in the Linux kernel's Intel Xe page-table code allows local users to corrupt kernel memory through the VM_BIND ioctl. xe_pt_update_ops_init() leaves current_op unchanged across lock-contention or OOM retries, so bind_op_prepare() advances past the allocated operations array and corrupts adjacent SLUB memory. Access to an Intel Xe render node is required; an unprivileged process can panic the kernel or groom the use-after-free for privilege escalation.

The record

CVE
CVE-2026-68264
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004, 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=6.12
  2. Affected versionversion=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <157b1e3384d7d37f59c0c2b2ff2af8f557db1daa
  3. Affected versionversion=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <6384271ac1ac0099198d15df79212a19ebdb929d
  4. Affected versionversion=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <90e4fd331b980259c40118d05b89b0ec514e7c48
  5. Affected versionversion=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <be5c39730ab8f1dfe59983bf7d8e3705541d1fee

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <157b1e3384d7d37f59c0c2b2ff2af8f557db1daa; version=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <6384271ac1ac0099198d15df79212a19ebdb929d; version=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <90e4fd331b980259c40118d05b89b0ec514e7c48; version=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <be5c39730ab8f1dfe59983bf7d8e3705541d1fee

Published CVSS scores

7.8LinuxCVSS: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

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

T1499.004Endpoint Denial of Service: Application or System Exploitation
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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