Access of Uninitialized Pointer Affecting kernel-rt-kvm package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-CENTOS10-KERNELRTKVM-18895819
  • published18 Aug 2026
  • disclosed15 Aug 2026

Introduced: 15 Aug 2026

NewCVE-2026-72095  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 kernel-rt-kvm.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

dma-fence: Make dma_fence_dedup_array() robust against 0-count input

dma_fence_dedup_array() returns 1 when called with num_fences == 0: the for-loop body never executes, j stays at 0, and the final return ++j yields 1. This contradicts both the kernel-doc ("Return: Number of unique fences remaining in the array") and the natural expectation that 0 input gives 0 output.

The caller __dma_fence_unwrap_merge() bails out via the if (count == 0 || count == 1) fast path and so is save.

But amdgpu_userq_wait_*() could reach the dedup call with a zero local count and dereference an uninitialized fence slot in the array.

Make the contract match the documentation by returning 0 early. This also skips an unnecessary sort() call on an empty array.

CVSS Base Scores

version 3.1