{"id":"OESA-2026-4063","summary":"libtiff security update","details":"This  provides support for the Tag Image File Format (TIFF), a widely used format for storing image data. The latest version of the TIFF specification is available on-line in several different formats.And contains command-line programs for manipulating TIFF format image files using the libtiff library.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.(CVE-2026-18495)","modified":"2026-09-25T01:45:10.359795736Z","published":"2026-09-25T01:27:57Z","upstream":["CVE-2026-18495"],"database_specific":{"severity":"Medium"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4063"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18495"}],"affected":[{"package":{"name":"libtiff","ecosystem":"openEuler:20.03-LTS-SP4","purl":"pkg:rpm/openEuler/libtiff&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.0-41.oe2003sp4"}]}],"ecosystem_specific":{"src":["libtiff-4.3.0-41.oe2003sp4.src.rpm"],"x86_64":["libtiff-4.3.0-41.oe2003sp4.x86_64.rpm","libtiff-debuginfo-4.3.0-41.oe2003sp4.x86_64.rpm","libtiff-debugsource-4.3.0-41.oe2003sp4.x86_64.rpm","libtiff-devel-4.3.0-41.oe2003sp4.x86_64.rpm"],"aarch64":["libtiff-4.3.0-41.oe2003sp4.aarch64.rpm","libtiff-debuginfo-4.3.0-41.oe2003sp4.aarch64.rpm","libtiff-debugsource-4.3.0-41.oe2003sp4.aarch64.rpm","libtiff-devel-4.3.0-41.oe2003sp4.aarch64.rpm"],"noarch":["libtiff-help-4.3.0-41.oe2003sp4.noarch.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4063.json"}},{"package":{"name":"libtiff","ecosystem":"openEuler:22.03-LTS-SP4","purl":"pkg:rpm/openEuler/libtiff&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.0-55.oe2203sp4"}]}],"ecosystem_specific":{"x86_64":["libtiff-4.3.0-55.oe2203sp4.x86_64.rpm","libtiff-debuginfo-4.3.0-55.oe2203sp4.x86_64.rpm","libtiff-debugsource-4.3.0-55.oe2203sp4.x86_64.rpm","libtiff-devel-4.3.0-55.oe2203sp4.x86_64.rpm","libtiff-static-4.3.0-55.oe2203sp4.x86_64.rpm","libtiff-tools-4.3.0-55.oe2203sp4.x86_64.rpm"],"aarch64":["libtiff-4.3.0-55.oe2203sp4.aarch64.rpm","libtiff-debuginfo-4.3.0-55.oe2203sp4.aarch64.rpm","libtiff-debugsource-4.3.0-55.oe2203sp4.aarch64.rpm","libtiff-devel-4.3.0-55.oe2203sp4.aarch64.rpm","libtiff-static-4.3.0-55.oe2203sp4.aarch64.rpm","libtiff-tools-4.3.0-55.oe2203sp4.aarch64.rpm"],"noarch":["libtiff-help-4.3.0-55.oe2203sp4.noarch.rpm"],"src":["libtiff-4.3.0-55.oe2203sp4.src.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4063.json"}},{"package":{"name":"libtiff","ecosystem":"openEuler:24.03-LTS-SP1","purl":"pkg:rpm/openEuler/libtiff&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.0-13.oe2403sp1"}]}],"ecosystem_specific":{"noarch":["libtiff-help-4.6.0-13.oe2403sp1.noarch.rpm"],"src":["libtiff-4.6.0-13.oe2403sp1.src.rpm"],"x86_64":["libtiff-4.6.0-13.oe2403sp1.x86_64.rpm","libtiff-debuginfo-4.6.0-13.oe2403sp1.x86_64.rpm","libtiff-debugsource-4.6.0-13.oe2403sp1.x86_64.rpm","libtiff-devel-4.6.0-13.oe2403sp1.x86_64.rpm","libtiff-static-4.6.0-13.oe2403sp1.x86_64.rpm","libtiff-tools-4.6.0-13.oe2403sp1.x86_64.rpm"],"aarch64":["libtiff-4.6.0-13.oe2403sp1.aarch64.rpm","libtiff-debuginfo-4.6.0-13.oe2403sp1.aarch64.rpm","libtiff-debugsource-4.6.0-13.oe2403sp1.aarch64.rpm","libtiff-devel-4.6.0-13.oe2403sp1.aarch64.rpm","libtiff-static-4.6.0-13.oe2403sp1.aarch64.rpm","libtiff-tools-4.6.0-13.oe2403sp1.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4063.json"}},{"package":{"name":"libtiff","ecosystem":"openEuler:24.03-LTS-SP3","purl":"pkg:rpm/openEuler/libtiff&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.0-13.oe2403sp3"}]}],"ecosystem_specific":{"noarch":["libtiff-help-4.6.0-13.oe2403sp3.noarch.rpm"],"src":["libtiff-4.6.0-13.oe2403sp3.src.rpm"],"x86_64":["libtiff-4.6.0-13.oe2403sp3.x86_64.rpm","libtiff-debuginfo-4.6.0-13.oe2403sp3.x86_64.rpm","libtiff-debugsource-4.6.0-13.oe2403sp3.x86_64.rpm","libtiff-devel-4.6.0-13.oe2403sp3.x86_64.rpm","libtiff-static-4.6.0-13.oe2403sp3.x86_64.rpm","libtiff-tools-4.6.0-13.oe2403sp3.x86_64.rpm"],"aarch64":["libtiff-4.6.0-13.oe2403sp3.aarch64.rpm","libtiff-debuginfo-4.6.0-13.oe2403sp3.aarch64.rpm","libtiff-debugsource-4.6.0-13.oe2403sp3.aarch64.rpm","libtiff-devel-4.6.0-13.oe2403sp3.aarch64.rpm","libtiff-static-4.6.0-13.oe2403sp3.aarch64.rpm","libtiff-tools-4.6.0-13.oe2403sp3.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4063.json"}},{"package":{"name":"libtiff","ecosystem":"openEuler:24.03-LTS-SP4","purl":"pkg:rpm/openEuler/libtiff&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.0-13.oe2403sp4"}]}],"ecosystem_specific":{"aarch64":["libtiff-4.6.0-13.oe2403sp4.aarch64.rpm","libtiff-debuginfo-4.6.0-13.oe2403sp4.aarch64.rpm","libtiff-debugsource-4.6.0-13.oe2403sp4.aarch64.rpm","libtiff-devel-4.6.0-13.oe2403sp4.aarch64.rpm","libtiff-static-4.6.0-13.oe2403sp4.aarch64.rpm","libtiff-tools-4.6.0-13.oe2403sp4.aarch64.rpm"],"noarch":["libtiff-help-4.6.0-13.oe2403sp4.noarch.rpm"],"src":["libtiff-4.6.0-13.oe2403sp4.src.rpm"],"x86_64":["libtiff-4.6.0-13.oe2403sp4.x86_64.rpm","libtiff-debuginfo-4.6.0-13.oe2403sp4.x86_64.rpm","libtiff-debugsource-4.6.0-13.oe2403sp4.x86_64.rpm","libtiff-devel-4.6.0-13.oe2403sp4.x86_64.rpm","libtiff-static-4.6.0-13.oe2403sp4.x86_64.rpm","libtiff-tools-4.6.0-13.oe2403sp4.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4063.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H"}]}