The MOTD update script in the base-files package in Ubuntu 18.04 LTS before 10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6557.json"
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.1ubuntu2.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.10"
}
]
}
]