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Heap out-of-bounds read in libdisplay-info DisplayID v2 parser

Priority MEDIUM 63CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

libdisplay-info versions from 0.4.0 are affected. The DisplayID v2 section parser advances past the end of the EDID buffer when a data block declares an oversized length, a heap out-of-bounds read (CWE-125). A local attacker can supply a crafted EDID from a malicious monitor, KVM, capture device or file, which can crash applications that parse it.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00196 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
emersionlibdisplay-info0.4.0—No fix listedCNA
  • libdisplay-info Vendoremersion Affected 0.4.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for libdisplay-info.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat Enterprise Linux 10

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-112272
  2. 2026-10-19 Alias added: GHSA-qvww-h55c-pg37
  3. 2026-10-20 CISA SSVC decision points changed
  4. 2026-10-20 Affected versions changed · Red Hat
  5. 2026-10-20 CVSS score added · Red Hat
  6. 2026-10-21 Affected versions changed · Red Hat

References

  • TI-2026-76471 Heap out-of-bounds read in libdisplay-info DisplayID parser CVSS 4.0MEDIUM 6.8

Sources