---
id: CVE-2023-6879
title: >-
  Increasing the resolution of video frames, while performing a multi-threaded
  encode, can result in a heap overflow in av1_loop_restoration_dealloc().
summary: >-
  Increasing the resolution of video frames, while performing a multi-threaded
  encode, can result in a heap overflow in av1_loop_restoration_dealloc().
severity: critical
cvss: 9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-20
  - CWE-787
vendor: aomedia
product: aomedia
affected:
  - aomedia < 3.7.1
  - fedora = 38
  - fedora = 39
patched:
  - aomedia 3.7.1
published: '2023-12-27'
updated: '2026-06-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-6879'
references:
  - url: 'https://aomedia.googlesource.com/aom/+/refs/tags/v3.7.1'
    label: cve-coordination@google.com
  - url: 'https://crbug.com/aomedia/3491'
    label: cve-coordination@google.com
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYONA2XSNFMXLAW4IHLFI5UVV3QRNG5K/
    label: cve-coordination@google.com
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D6C2HN4T2S6GYNTAUXLH45LQZHK7QPHP/
    label: cve-coordination@google.com
  - url: 'https://aomedia.googlesource.com/aom/+/refs/tags/v3.7.1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://crbug.com/aomedia/3491'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYONA2XSNFMXLAW4IHLFI5UVV3QRNG5K/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D6C2HN4T2S6GYNTAUXLH45LQZHK7QPHP/
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01175
epssPercentile: 0.6622
ingestedAt: '2026-06-29T13:24:33.952Z'
---

## Overview

Increasing the resolution of video frames, while performing a multi-threaded encode, can result in a heap overflow in av1_loop_restoration_dealloc().

## Affected

- `aomedia < 3.7.1`
- `fedora = 38`
- `fedora = 39`

## Remediation

Upgrade past the affected range:

- `aomedia 3.7.1`