RHSA-2026:58545: Important: libtiff security update

- Issued: - 2026-08-24 - Updated: - 2026-08-24 RHSA-2026:58545 - Security Advisory Synopsis Important: libtiff security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. Topic An update for libtiff is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files. Security Fix(es): - libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: Affected Products - Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 x86_64 - Red Hat Enterprise Linux Server - AUS 8.6 x86_64 Fixes - BZ - 2492871 - CVE-2026-12912 libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image CVEs Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 | SRPM | | |---|---| | libtiff-4.0.9-21.el8_6.3.src.rpm | SHA-256: 0c70c3a51493a90822b1c298b284fa39eaa605bcb973ad858281953c7307281b | | x86_64 | | | libtiff-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 6d9644b5a75cd8ba3c525fe59ea45d76f5ad19795046aa6caa696a538a3f3210 | | libtiff-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: c8a98a51a61331656f80449304c8aa2e9023754afcdc6c19077d82177c43a903 | | libtiff-debuginfo-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 61939f41edab478aca229c73613e69bc2a401d7844ef8da7a1d1353b86be3264 | | libtiff-debuginfo-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: c0377a31940d821e6b844f06e255903bf463d94f8e3a90782432f49bffe6bb92 | | libtiff-debugsource-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 46a715c33c05262186dfa66057ff75c8b730fc9c3ef380abc0194827fff6e682 | | libtiff-debugsource-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: b650fd92ca1ae31ca1db50f956b7e7069c29449c2aa7915b52cb0d995efb5cb5 | | libtiff-devel-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 8fb1769a571f33bdc24bed08e8ca11e4a7406a0c68a376f683d409664c0e7cc3 | | libtiff-devel-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: 107520b8d52bbf55e59d68eb123e0454cb1e7de972d7e54abf36447320ec4f3e | | libtiff-tools-debuginfo-4.0.9-21.el8_6.3.i686.rpm | SHA-256: b52327dfd33e6c4560ee904edfe106cd7e3f24762e6b5982551a402e82c01374 | | libtiff-tools-debuginfo-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: 31d5bb8c3467f85ea47b1ae410e422d17b2c74cd9bf3b80fc91aa83e1b7930e6 | Red Hat Enterprise Linux Server - AUS 8.6 | SRPM | | |---|---| | libtiff-4.0.9-21.el8_6.3.src.rpm | SHA-256: 0c70c3a51493a90822b1c298b284fa39eaa605bcb973ad858281953c7307281b | | x86_64 | | | libtiff-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 6d9644b5a75cd8ba3c525fe59ea45d76f5ad19795046aa6caa696a538a3f3210 | | libtiff-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: c8a98a51a61331656f80449304c8aa2e9023754afcdc6c19077d82177c43a903 | | libtiff-debuginfo-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 61939f41edab478aca229c73613e69bc2a401d7844ef8da7a1d1353b86be3264 | | libtiff-debuginfo-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: c0377a31940d821e6b844f06e255903bf463d94f8e3a90782432f49bffe6bb92 | | libtiff-debugsource-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 46a715c33c05262186dfa66057ff75c8b730fc9c3ef380abc0194827fff6e682 | | libtiff-debugsource-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: b650fd92ca1ae31ca1db50f956b7e7069c29449c2aa7915b52cb0d995efb5cb5 | | libtiff-devel-4.0.9-21.el8_6.3.i686.rpm | SHA-256: 8fb1769a571f33bdc24bed08e8ca11e4a7406a0c68a376f683d409664c0e7cc3 | | libtiff-devel-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: 107520b8d52bbf55e59d68eb123e0454cb1e7de972d7e54abf36447320ec4f3e | | libtiff-tools-debuginfo-4.0.9-21.el8_6.3.i686.rpm | SHA-256: b52327dfd33e6c4560ee904edfe106cd7e3f24762e6b5982551a402e82c01374 | | libtiff-tools-debuginfo-4.0.9-21.el8_6.3.x86_64.rpm | SHA-256: 31d5bb8c3467f85ea47b1ae410e422d17b2c74cd9bf3b80fc91aa83e1b7930e6 | The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.