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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-43398

24
FAUCET Score

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add upper bound check on user inputs in wait ioctl Huge input values in amdgpu_userq_wait_ioctl can lead to a OOM and could be exploited. So check these input value against AMDGPU_USERQ_MAX_HANDLES which is big enough value for genuine use cases and could potentially avoid OOM. v2: squash in Srini's fix (cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)

First published: May 8, 2026Last modified: May 11, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.16, < 6.18.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.19, < 6.19.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.13%
Probability of exploitation in next 30 days
EPSS Percentile
2.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0013 is in the 18th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.137.1-2 on Azure Linux 3.0Fixed in: 6.6.138.1-1
microsoftpatch availablevia msrc
Product: 21308-17084Fixed in: 6.6.138.1-1

Vendor Advisories (1)

microsoft2026-May/CVE-2026-43398

drm/amdgpu: add upper bound check on user inputs in wait ioctl

May 7, 2026

References

git.kernel.org / stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a
Patch
git.kernel.org / stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613
Patch
git.kernel.org / stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1
Patch