LowFix available
lxc — security advisory
lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.
- Products
- lxc
- Affected versions
- Not specified
- Fixed versions
- 2.0.9-r1, 2.1.1-r3, 2.1.1-r9
- CVEs
- CVE-2018-6556
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:00 UTC · Revision 1
Source evidence
lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.
osv:ALPINE-CVE-2018-6556
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.0.9-r1
lxc
Fixed versions: 2.1.1-r3
lxc
Fixed versions: 2.1.1-r9
lxc
Fixed versions: 2.1.1-r9
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-6556",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-6556",
"summary": "lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.",
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],
"modified": "2026-10-23T17:17:55.283673356Z",
"provider": "osv",
"upstream": [
"CVE-2018-6556"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-6556"
]
},
"related_cves": [
{
"value": "CVE-2018-6556",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415215,
"published_at": "2018-08-10T15:29:01.297+00:00"
}