An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading to DoS or remote code execution.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"last_affected": "12.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
"source": "CPE_FIELD"
},
{
"extracted_events": [
{
"last_affected": "14.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"source": "CPE_FIELD"
},
{
"extracted_events": [
{
"last_affected": "16.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"source": "CPE_FIELD"
},
{
"extracted_events": [
{
"last_affected": "18.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"source": "CPE_FIELD"
},
{
"extracted_events": [
{
"last_affected": "8.0"
}
],
"cpe": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"source": "CPE_FIELD"
}
]
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "1.6.5"
}
],
"cpe": "cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*",
"source": "CPE_FIELD"
}