{"id":"CLSA-2026-1787162017","summary":"libXfont2: Fix of 2 CVEs","details":"- CVE-2026-59679: validate num_chars against the encoding array size in\n  fs_read_glyphs() in src/fc/fserve.c; prevents an out-of-bounds read/write on\n  encoding[] when a font server sends more glyphs than extents\n  (upstream commit 668fea81f40bcb48ec67fb55d0b851049d265290)\n- CVE-2026-44950: bounds-check cumulative glyph data writes in fs_read_glyphs()\n  in src/fc/fserve.c; prevents a heap buffer overflow from overlapping source\n  offsets whose total length exceeds the allocated bitmap buffer\n  (upstream commit c2d222bb22c623d8a40f3275077fc7e6617f2c8a)","modified":"2026-10-26T09:43:54.830306542Z","published":"2026-08-26T09:32:20Z","upstream":["CVE-2026-44950","CVE-2026-59679"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1787162017.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44950"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59679"}],"affected":[{"package":{"name":"libXfont2","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/libXfont2?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-12.el9_6.tuxcare.els4"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1787162017.json"}},{"package":{"name":"libXfont2-devel","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/libXfont2-devel?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-12.el9_6.tuxcare.els4"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1787162017.json"}}],"schema_version":"1.9.0"}