Vulnerability · Published Oct 19, 2026 · Assigned by VulnCheck
CVE-2026-112271libdisplay-info through 0.4.0 Heap Out-of-Bounds Read via DisplayID v1 Parser
Medium 5.5
In plain English
A medium-severity out-of-bounds read in libdisplay-info from emersion. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 90.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| emersion | libdisplay-info | 0 – through 0.4.0 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://hackmd.io/@haindpwn/libdisplay-info-displayid-datablock-overrun-oob-read third-party-advisory
- https://gitlab.freedesktop.org/emersion/libdisplay-info/-/blob/0.4.0/displayid.c#L603-L689 technical-description
- https://gitlab.freedesktop.org/emersion/libdisplay-info product
- VulnCheck Advisory: libdisplay-info through 0.4.0 Heap Out-of-Bounds Read via DisplayID v1 Parser third-party-advisory
- https://hackmd.io/@haindpwn/cve-2026-112271-112272-libdisplay-info-displayid-datablock-overrun-oob-read exploit