{"schemaVersion":3,"id":"MGASA-2018-0369","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated libxkbcommon packages fix security vulnerabilities\n\nUpdated libxkbcommon packages fix security vulnerabilities:\n\nEndless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon\nbefore 0.8.1, which could be used by local attackers to crash xkbcommon\nusers by supplying a crafted keymap file that triggers boolean negation\n(CVE-2018-15853).\n\nUnchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by\nlocal attackers to crash (NULL pointer dereference) the xkbcommon parser\nby supplying a crafted keymap file, because geometry tokens were\ndesupported incorrectly (CVE-2018-15854).\n\nUnchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by\nlocal attackers to crash (NULL pointer dereference) the xkbcommon parser\nby supplying a crafted keymap file, because the XkbFile for an xkb_geometry\nsection was mishandled (CVE-2018-15855).\n\nAn infinite loop when reaching EOL unexpectedly in compose/parser.c (aka\nthe keymap parser) in xkbcommon before 0.8.1 could be used by local\nattackers to cause a denial of service during parsing of crafted keymap\nfiles (CVE-2018-15856).\n\nAn invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in\nxkbcommon before 0.8.1 could be used by local attackers to crash xkbcommon\nkeymap parsers or possibly have unspecified other impact by supplying a\ncrafted keymap file (CVE-2018-15857).\n\nUnchecked NULL pointer usage when handling invalid aliases in\nCopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1\ncould be used by local attackers to crash (NULL pointer dereference) the\nxkbcommon parser by supplying a crafted keymap file (CVE-2018-15858).\n\nUnchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs\nin xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local\nattackers to crash (NULL pointer dereference) the xkbcommon parser by\nsupplying a crafted keymap file, because lookup failures are mishandled\n(CVE-2018-15859).\n\nUnchecked NULL pointer usage in ExprResolveLhs in xkbcomp/expr.c in\nxkbcommon before 0.8.2 could be used by local attackers to crash (NULL\npointer dereference) the xkbcommon parser by supplying a crafted keymap\nfile that triggers an xkb_intern_atom failure (CVE-2018-15861).\n\nUnchecked NULL pointer usage in LookupModMask in xkbcomp/expr.c in\nxkbcommon before 0.8.2 could be used by local attackers to crash (NULL\npointer dereference) the xkbcommon parser by supplying a crafted keymap\nfile with invalid virtual modifiers (CVE-2018-15862).\n\nUnchecked NULL pointer usage in ResolveStateAndPredicate in\nxkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers\nto crash (NULL pointer dereference) the xkbcommon parser by supplying a\ncrafted keymap file with a no-op modmask expression (CVE-2018-15863).\n\nUnchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in\nxkbcommon before 0.8.2 could be used by local attackers to crash (NULL\npointer dereference) the xkbcommon parser by supplying a crafted keymap\nfile, because a map access attempt can occur for a map that was never\ncreated (CVE-2018-15864).","dates":{"published":"2018-09-07T10:15:03.000Z","modified":"2026-04-16T06:23:08.350Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"libxkbcommon","name":"libxkbcommon","label":"libxkbcommon","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libxkbcommon","purlType":"rpm","versions":[{"text":"< 0.8.2-1.mga6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.8.2-1.mga6","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2018-0369.html","label":"advisories.mageia.org/MGASA-2018-0369.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=23506","label":"bugs.mageia.org/show_bug.cgi?id=23506","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/377JCLG64STYRNYZZ4B5QKGX2MAW6JUX/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]}],"lineage":{"upstream":["CVE-2018-15853","CVE-2018-15854","CVE-2018-15855","CVE-2018-15856","CVE-2018-15857","CVE-2018-15858","CVE-2018-15859","CVE-2018-15861","CVE-2018-15862","CVE-2018-15863","CVE-2018-15864"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-09-07T10:15:03.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T06:23:08.350Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T09:24:03.154Z","stale":false,"partial":false}}