{"id":"CVE-2026-56002","summary":"libXfont2 PCF Font Parsing Heap Buffer Overflow","details":"A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8  allows attackers authenticated as X client to execute code within the X server.","modified":"2026-07-17T18:29:39.346114184Z","published":"2026-07-08T09:12:51.480Z","related":["SUSE-SU-2026:22614-1","SUSE-SU-2026:2793-1","SUSE-SU-2026:2794-1","openSUSE-SU-2026:11233-1","openSUSE-SU-2026:21284-1"],"database_specific":{"cna_assigner":"suse","cwe_ids":["CWE-122"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56002.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"2.0.8"}]},{"source":"CPE_FIELD","extracted_events":[{"fixed":"2.0.8"}]},{"source":"DESCRIPTION","extracted_events":[{"introduced":"libXfont2"},{"fixed":"2.0.8"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56002.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56002"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2026/07/08/1"},{"type":"FIX","url":"https://gitlab.freedesktop.org/xorg/lib/libxfont/-/commit/b4389e0b1d84a690b819bb27b1439968811a3674"},{"type":"PACKAGE","url":"https://gitlab.freedesktop.org/xorg/lib/libxfont"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.freedesktop.org/xorg/lib/libxfont","events":[{"introduced":"0"},{"fixed":"b4389e0b1d84a690b819bb27b1439968811a3674"}],"database_specific":{"source":"REFERENCES"}}],"versions":["libXfont2-2.0.7","libXfont2-2.0.6","libXfont2-2.0.5","libXfont2-2.0.4","libXfont2-2.0.3","libXfont2-2.0.2","libXfont2-2.0.1","libXfont2-2.0.0","libXfont-1.5.1","libXfont-1.5.0","libXfont-1.4.99.901","libXfont-1.4.7","libXfont-1.4.6","libXfont-1.4.5","libXfont-1.4.4","libXfont-1.4.3","libXfont-1.4.2","libXfont-1.4.1","libXfont-1.4.0","libXfont-1.3.4","libXfont-1.3.3","libXfont-1.3.2","libXfont-1.3.1","libXfont-1.3.0","libXfont-1.2.9","libXfont-1.2.8","libXfont-1.2.7","libXfont-1.2.6","libXfont-1.2.5","libXfont-1.2.4","libXfont-1.2.3","libXfont-1.2.0","libxfont-1_1_0","XORG-7_1","XORG-7_0_99_901","XORG-7_0","XORG-6_99_99_904","MODULAR_COPY","XORG-6_99_99_903","XORG-6_8_99_903","XORG-6_99_99_902","XORG-6_8_99_902","XORG-6_99_99_901","XORG-6_99_99_900","XORG-6_8_99_901","XORG-6_8_99_900","XORG-6_8_99_16","XORG-6_8_99_15","XORG-6_8_99_14","XORG-6_8_99_13","XORG-6_8_99_12","sco_port_update-base","XORG-6_8_99_8","XORG-6_8_99_7","XORG-6_8_99_6","XORG-6_8_99_5","XORG-6_8_99_4","XORG-6_8_99_11","XORG-6_8_99_9","XORG-6_8_99_10","XORG-6_8_99_3","XORG-6_8_99_2","XORG-6_8_99_1","rel-0-6-1","lg3d-rel-0-7-0","lg3d-base","XORG-6_8_1_902","XORG-6_8_1_901","XORG-6_8_1","XORG-6_8_0","XORG-6_7_99_904","XORG-6_7_99_903","XORG-6_7_99_902","XORG-6_7_99_901","XORG-6_7_99_2","XORG-6_7_99_1","XACE-SELINUX-MERGE","xf86-4_4_99_1","xf86-4_4_0","xf86-4_3_99_903","xf86-4_3_99_903_special","xf86-012804-2330","xf86-4_3_99_902","xf86-4_3_99_901","xf86-4_3_99_16","xf86-4_3_0_1","PRE_xf86-4_3_0_1","XORG-MAIN"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56002.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}