RHSA-2026:54642HighCVSS 7.3

Red Hat Security Advisory: compat-libtiff3 security update

Published
August 13, 2026
Last Modified
August 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-12912 →

📋 Description

CVE-2026-12912 — libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image

🎯 Affected products16

  • Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-0:3.9.4-13.el8_4.3.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-0:3.9.4-13.el8_4.3.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-0:3.9.4-13.el8_4.3.src as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-0:3.9.4-13.el8_4.3.src as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-0:3.9.4-13.el8_4.3.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-0:3.9.4-13.el8_4.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-debuginfo-0:3.9.4-13.el8_4.3.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-debuginfo-0:3.9.4-13.el8_4.3.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-debuginfo-0:3.9.4-13.el8_4.3.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-debuginfo-0:3.9.4-13.el8_4.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-debugsource-0:3.9.4-13.el8_4.3.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-debugsource-0:3.9.4-13.el8_4.3.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • compat-libtiff3-debugsource-0:3.9.4-13.el8_4.3.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • compat-libtiff3-debugsource-0:3.9.4-13.el8_4.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, applications processing untrusted TIFF images should avoid explicitly configuring `PIXARLOGDATAFMT_8BITABGR` when decoding PixarLog-compressed TIFF images with three samples per pixel. This specific combination of output format and samples per pixel is required to trigger the heap-based buffer overflow.

🔗 References (4)