What’s Vulnerable › Vulnerabilities

CVE-2026-112271: libdisplay-info through 0.4.0 Heap Out-of-Bounds Read via DisplayID v1 Parser

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-19
• Weakness: CWE-125

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

• emersion libdisplay-info: through 0.4.0

References

• https://gitlab.freedesktop.org/emersion/libdisplay-info
• https://gitlab.freedesktop.org/emersion/libdisplay-info/-/blob/0.4.0/displayid.c#L603-L689
• https://hackmd.io/@haindpwn/libdisplay-info-displayid-datablock-overrun-oob-read
• https://www.vulncheck.com/advisories/libdisplay-info-through-0.4.0-heap-out-of-bounds-read-via-displayid-v1-parser
• https://hackmd.io/@haindpwn/cve-2026-112271-112272-libdisplay-info-displayid-datablock-overrun-oob-read

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