{"id":"UBUNTU-CVE-2026-48977","details":"OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.","modified":"2026-09-24T02:00:32.290929018Z","published":"2026-09-17T21:17:00Z","upstream":["CVE-2026-48977"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-48977"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-48977"},{"type":"REPORT","url":"https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc"}],"affected":[{"package":{"name":"openslide","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenslide0","binary_version":"3.4.0-1build1"},{"binary_name":"openslide-tools","binary_version":"3.4.0-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}},{"package":{"name":"openslide","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenslide0","binary_version":"3.4.1+dfsg-2"},{"binary_name":"openslide-tools","binary_version":"3.4.1+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}},{"package":{"name":"openslide","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+dfsg-4"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.1+dfsg-4","binary_name":"libopenslide0"},{"binary_name":"openslide-tools","binary_version":"3.4.1+dfsg-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}},{"package":{"name":"openslide","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+dfsg-5","3.4.1+dfsg-5build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenslide0","binary_version":"3.4.1+dfsg-5build1"},{"binary_version":"3.4.1+dfsg-5build1","binary_name":"openslide-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}},{"package":{"name":"openslide","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+dfsg-6build1","3.4.1+dfsg-7","3.4.1+dfsg-7build1","3.4.1+dfsg-7build2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.1+dfsg-7build2","binary_name":"libopenslide0"},{"binary_version":"3.4.1+dfsg-7build2","binary_name":"openslide-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}},{"package":{"name":"openslide","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+dfsg-7build2","3.4.1+dfsg-7build3"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.1+dfsg-7build3","binary_name":"libopenslide0"},{"binary_name":"openslide-tools","binary_version":"3.4.1+dfsg-7build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}},{"package":{"name":"openslide","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/openslide?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1+dfsg-7build3","3.4.1+dfsg-7build4"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenslide0","binary_version":"3.4.1+dfsg-7build4"},{"binary_version":"3.4.1+dfsg-7build4","binary_name":"openslide-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48977.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}