---
id: CVE-2026-72095
title: >-
  kernel: dma-fence: Make dma_fence_dedup_array() robust against 0-count input
  (CVE-2026-72095)
summary: >-
  A flaw was found in the Linux kernel's dma-fence component. The
  `dma_fence_dedup_array()` function incorrectly handles zero-count input,
  leading to a memory corruption vulnerability. A local attacker could
  potentially exploit this by trigg…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-824
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
published: '2026-08-15'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T11:08:37+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72095.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72095.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-72095'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2516340'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-72095'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72095'
  - url: 'https://kernelcve.org/list/?q=CVE-2026-72095'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026081523-CVE-2026-72095-0ad7@gregkh/T
  - url: 'https://git.kernel.org/stable/c/7aa8f3dba53422465dbe1be8dbb7240304462bb2'
  - url: 'https://git.kernel.org/stable/c/e2d9a2ea178a5da0b4a6693e8ebca5c7fc4d7051'
  - url: 'https://git.kernel.org/stable/c/77a9298741f8f9e8b963c977f5582ab21c6d3427'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00173
epssPercentile: 0.0672
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:51:46.940002Z'
scores:
  vendor: 5.5
  cna: 7.8
ingestedAt: '2026-10-16T17:24:46.878Z'
---

## Overview

A flaw was found in the Linux kernel's dma-fence component. The `dma_fence_dedup_array()` function incorrectly handles zero-count input, leading to a memory corruption vulnerability. A local attacker could potentially exploit this by triggering specific conditions in the `amdgpu_userq_wait_*()` functions, which may cause a system crash or lead to further compromise.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72095.json)

**kernel: dma-fence: Make dma_fence_dedup_array() robust against 0-count input** — rated Moderate by Red Hat. Released 2026-08-15, updated 2026-10-26.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8

## Remediation

Affected