CVE-2026-112271

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.

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