An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by supplying a crafted keymap file.
{
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"
],
"source": "CPE_FIELD",
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"last_affected": "14.04"
},
{
"last_affected": "16.04"
},
{
"last_affected": "18.04"
}
]
},
{
"cpes": [
"cpe:2.3:a:xkbcommon:xkbcommon:*:*:*:*:*:*:*:*"
],
"source": "CPE_FIELD",
"vendor_product": "xkbcommon:xkbcommon",
"extracted_events": [
{
"fixed": "0.8.1"
}
]
}
]
}