RHSA-2026:49671HighCVSS 7.5

Red Hat Security Advisory: libtiff security, bug fix, and enhancement update

Published
August 3, 2026
Last Modified
August 3, 2026

🔗 CVE IDs covered (2)

CVE-2023-52355 →CVE-2026-12912 →

📋 Description

CVE-2023-52355 — libtiff: TIFFRasterScanlineSize64 produce too-big size and could cause OOM CVE-2026-12912 — libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image

🎯 Affected products39

  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-0:4.6.0-6.el10_0.4.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-0:4.6.0-6.el10_0.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debuginfo-0:4.6.0-6.el10_0.4.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-debugsource-0:4.6.0-6.el10_0.4.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-devel-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-devel-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-devel-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-devel-0:4.6.0-6.el10_0.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • libtiff-tools-0:4.6.0-6.el10_0.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-tools-0:4.6.0-6.el10_0.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • libtiff-tools-0:4.6.0-6.el10_0.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • +9 more not shown

✅ 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 (5)