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TI-2026-76471 Aliases CVE-2026-112271GHSA-3gg9-cc9m-vj8c

Heap out-of-bounds read in libdisplay-info DisplayID 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
Deferred Red Hat: fix deferred

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

Summary

libdisplay-info through 0.4.0 contains a heap out-of-bounds read in the DisplayID v1 section parser (CWE-125). When a data block's declared length exceeds the section, the is_all_zeroes check reads past the buffer. An attacker who gets a user to load a crafted EDID from a malicious monitor, KVM, capture device or EDID file can cause a possible crash.

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

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00195 9th percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred

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-infoup to 0.4.0—No fix listedCNA
  • libdisplay-info Vendoremersion Affected up to 0.4.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for libdisplay-info. Red Hat lists Red Hat Enterprise Linux 10 as affected, with no fix available.

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 →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-112271
  2. 2026-10-19 Alias added: GHSA-3gg9-cc9m-vj8c
  3. 2026-10-20 Affected versions changed · Red Hat
  4. 2026-10-20 CVSS score added · Red Hat

References

Advisory 1

Other 2

  • TI-2026-76472 Heap out-of-bounds read in libdisplay-info DisplayID v2 parser CVSS 4.0MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences