1. Home
  2. Vulnerabilities
  3. CVE-2026-68276
0.0
NA
CVE-2026-68276
drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx: fix cleaner shader IB buffer overflow The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is 0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a kernel page fault. The IB only needs to be a minimal NOP shell to schedule the job; the cleaner shader itself is emitted on the ring via emit_cleaner_shader(). Fill 16 dwords to match the allocation. v2: Use ib_size_dw variable (Lijo) (cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)

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-2026-68276 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
Solution
Fix shader IB buffer overflow by filling correct number of dwords.
  • Update the Linux kernel.
  • Ensure shader IB allocation matches buffer size.
  • Fill 16 dwords for GFX rings alignment.
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-2026-68276.

URL Resource
https://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9
https://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3
https://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3
https://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-68276 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-2026-68276 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-2026-68276 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-2026-68276 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': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '201633f47b542a99bb7baafdfcda7781249fb3d9', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': 'e28420e36542ae8b66a5bdcec419525f521bddf8', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '9cd9a983769a4d0e9cc80a287316ee79685d38b3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.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': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '201633f47b542a99bb7baafdfcda7781249fb3d9', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': 'e28420e36542ae8b66a5bdcec419525f521bddf8', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '9cd9a983769a4d0e9cc80a287316ee79685d38b3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.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': '6.18.42', '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/amd/amdgpu/amdgpu_gfx.c'], 'defaultStatus': 'affected'}]
  • 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': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '201633f47b542a99bb7baafdfcda7781249fb3d9', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': 'e28420e36542ae8b66a5bdcec419525f521bddf8', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '9cd9a983769a4d0e9cc80a287316ee79685d38b3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd361ad5d2fc0e4d59d5d538092c9b37889756642', 'lessThan': '3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.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': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx: fix cleaner shader IB buffer overflow The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is 0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a kernel page fault. The IB only needs to be a minimal NOP shell to schedule the job; the cleaner shader itself is emitted on the ring via emit_cleaner_shader(). Fill 16 dwords to match the allocation. v2: Use ib_size_dw variable (Lijo) (cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)
    Added Reference https://git.kernel.org/stable/c/201633f47b542a99bb7baafdfcda7781249fb3d9
    Added Reference https://git.kernel.org/stable/c/3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3
    Added Reference https://git.kernel.org/stable/c/9cd9a983769a4d0e9cc80a287316ee79685d38b3
    Added Reference https://git.kernel.org/stable/c/e28420e36542ae8b66a5bdcec419525f521bddf8
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
No CVSS metrics available for this vulnerability.