1. Home
  2. Vulnerabilities
  3. CVE-2026-68264
7.8
HIGH CVSS 3.1
CVE-2026-68264
drm/xe/pt: Reset current_op in xe_pt_update_ops_init()
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe/pt: Reset current_op in xe_pt_update_ops_init() xe_pt_update_ops_init() fails to reset current_op to 0. On the vm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside the xe_validation_guard() / drm_exec_until_all_locked() loop. When that loop retries due to lock contention or OOM eviction (drm_exec_retry_on_contention() / xe_validation_retry_on_oom()), xe_pt_update_ops_prepare() runs again on the same vops, and each call to bind_op_prepare() increments current_op without resetting it. After N retries current_op exceeds the array size allocated by xe_vma_ops_alloc(), causing an out-of-bounds write into SLUB-poisoned memory and a subsequent UAF crash in xe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind. Also reset needs_svm_lock and needs_invalidation which are derived in the same prepare pass and would otherwise cause wrong migrate ops selection and redundant TLB invalidation on retry. Fix this by resetting current_op, needs_svm_lock and needs_invalidation in xe_pt_update_ops_init(). v2 (Matt): - Add details in commit message. - Add Fixes tag and Cc to [email protected] (cherry picked from commit 046045543e530605c441063535e7dca0075369a6)

Details
INFO

Published Date :

Aug. 10, 2026, 1:20 p.m.

Last Modified :

Aug. 17, 2026, 5:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-68264 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Update the Linux kernel to fix an out-of-bounds write and subsequent crash.
  • Apply the kernel patch that resets current_op.
  • Ensure proper initialization of operations state.
  • Update the Linux kernel to the latest version.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-68264.

URL Resource
https://git.kernel.org/stable/c/157b1e3384d7d37f59c0c2b2ff2af8f557db1daa
https://git.kernel.org/stable/c/6384271ac1ac0099198d15df79212a19ebdb929d
https://git.kernel.org/stable/c/90e4fd331b980259c40118d05b89b0ec514e7c48
https://git.kernel.org/stable/c/be5c39730ab8f1dfe59983bf7d8e3705541d1fee
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-68264 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-68264 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-68264 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-68264 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': 'be5c39730ab8f1dfe59983bf7d8e3705541d1fee', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '157b1e3384d7d37f59c0c2b2ff2af8f557db1daa', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '90e4fd331b980259c40118d05b89b0ec514e7c48', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '6384271ac1ac0099198d15df79212a19ebdb929d', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/xe/xe_pt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/xe/xe_pt.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': 'be5c39730ab8f1dfe59983bf7d8e3705541d1fee', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '157b1e3384d7d37f59c0c2b2ff2af8f557db1daa', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '90e4fd331b980259c40118d05b89b0ec514e7c48', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '6384271ac1ac0099198d15df79212a19ebdb929d', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/xe/xe_pt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/xe/xe_pt.c'], 'defaultStatus': 'affected'}]
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 13, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 10, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': 'be5c39730ab8f1dfe59983bf7d8e3705541d1fee', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '157b1e3384d7d37f59c0c2b2ff2af8f557db1daa', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '90e4fd331b980259c40118d05b89b0ec514e7c48', 'versionType': 'git'}, {'status': 'affected', 'version': 'e8babb280b5ef904df54b3a90e5a7e3a9600c4a9', 'lessThan': '6384271ac1ac0099198d15df79212a19ebdb929d', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/xe/xe_pt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/xe/xe_pt.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: drm/xe/pt: Reset current_op in xe_pt_update_ops_init() xe_pt_update_ops_init() fails to reset current_op to 0. On the vm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside the xe_validation_guard() / drm_exec_until_all_locked() loop. When that loop retries due to lock contention or OOM eviction (drm_exec_retry_on_contention() / xe_validation_retry_on_oom()), xe_pt_update_ops_prepare() runs again on the same vops, and each call to bind_op_prepare() increments current_op without resetting it. After N retries current_op exceeds the array size allocated by xe_vma_ops_alloc(), causing an out-of-bounds write into SLUB-poisoned memory and a subsequent UAF crash in xe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind. Also reset needs_svm_lock and needs_invalidation which are derived in the same prepare pass and would otherwise cause wrong migrate ops selection and redundant TLB invalidation on retry. Fix this by resetting current_op, needs_svm_lock and needs_invalidation in xe_pt_update_ops_init(). v2 (Matt): - Add details in commit message. - Add Fixes tag and Cc to [email protected] (cherry picked from commit 046045543e530605c441063535e7dca0075369a6)
    Added Reference https://git.kernel.org/stable/c/157b1e3384d7d37f59c0c2b2ff2af8f557db1daa
    Added Reference https://git.kernel.org/stable/c/6384271ac1ac0099198d15df79212a19ebdb929d
    Added Reference https://git.kernel.org/stable/c/90e4fd331b980259c40118d05b89b0ec514e7c48
    Added Reference https://git.kernel.org/stable/c/be5c39730ab8f1dfe59983bf7d8e3705541d1fee
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact