---
id: CVE-2026-112271
title: libdisplay-info through 0.4.0 Heap Out-of-Bounds Read via DisplayID v1 Parser
summary: >-
  libdisplay-info through 0.4.0 contains a heap out-of-bounds read vulnerability
  in the DisplayID v1 section parser in displayid.c that occurs when a data
  block's declared length exceeds the section. Attackers can supply a crafted
  EDID fro…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-125
vendor: emersion
product: libdisplay-info
affected:
  - libdisplay-info <= 0.4.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-19T14:11:07.408759Z'
exploitAvailable: true
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T14:11:35.515Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112271'
references:
  - url: >-
      https://hackmd.io/@haindpwn/libdisplay-info-displayid-datablock-overrun-oob-read
  - url: >-
      https://gitlab.freedesktop.org/emersion/libdisplay-info/-/blob/0.4.0/displayid.c#L603-L689
  - url: 'https://gitlab.freedesktop.org/emersion/libdisplay-info'
  - url: >-
      https://www.vulncheck.com/advisories/libdisplay-info-through-0.4.0-heap-out-of-bounds-read-via-displayid-v1-parser
    label: >-
      VulnCheck Advisory: libdisplay-info through 0.4.0 Heap Out-of-Bounds Read
      via DisplayID v1 Parser
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-19T14:30:01.064Z'
---

## Overview

libdisplay-info through 0.4.0 contains a heap out-of-bounds read vulnerability in the DisplayID v1 section parser in displayid.c that occurs when a data block's declared length exceeds the section. Attackers can supply a crafted EDID from a malicious monitor, KVM, capture device, or EDID file to make is_all_zeroes read past the buffer, causing a possible crash.

## Affected

- `libdisplay-info <= 0.4.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.