High7.3Red Hat Linux

High [CVE-2026-12912] Heap-based buffer overflow via crafted PixarLog-compressed TIFF image

This high-severity Red Hat Linux advisory covers CVE-2026-12912 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 10.0 Extended Update Support.

CVE-2026-12912 Published Apr 16, 2026

CVE-2026-12912

Affected products & platforms

Red Hat LinuxUnclassified

Open vendor advisory

Android app · Google Play

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

Heap-based buffer overflow via crafted PixarLog-compressed TIFF image. Red Hat rates this important (CVSS 7.3).

Weakness: CWE-122. Affected package(s): libtiff-main.

Resolved in Red Hat advisory RHSA-2026:34890 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support; and 6 more.

Affected versions

libtiff-main-4.7.1-2.4.hum1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:34890

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:34890 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.