CVE-2026-43398

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

MEDIUM
5.5
CVSS Score
Published: May 8, 2026 at 02:21 PM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

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)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.16 ≤ v < 6.18.196.16 ≤ v < 6.19.96.16 ≤ v < 7.06.19 ≤ v < 6.19.96.167.0 rc1a292fdecd72834b3bec380baa5db1e69e7f70679
Vendor states this is fixed in 3cd93bc695b3456f26f5ed52753d9071da26202a (fixed)
Vendor states this is fixed in 64ac7c09fc44985ec9bb6a9db740899fa40ca613 (fixed)
Vendor states this is fixed in b1d10508da559da2e0ca9cca6505094a7df948e1 (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.19 (unaffected)
Vendor states this is fixed in 6.19.9 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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