High
policykit-1 — security advisory
pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.
- Products
- policykit-1
- Affected versions
- 0.105-11ubuntu2, 0.105-13, 0.105-13ubuntu1, 0.105-14, 0.105-14.1, 0.105-14.1ubuntu0.1, 0.105-14.1ubuntu0.4, 0.105-14.1ubuntu0.5, 0.105-14.1ubuntu0.5+esm1, 0.105-18, 0.105-20, 0.105-20ubuntu0.18.04.1, 0.105-20ubuntu0.18.04.4, 0.105-20ubuntu0.18.04.5, 0.105-20ubuntu0.18.04.6, 0.105-26ubuntu1, 0.105-26ubuntu1.1, 0.105-26ubuntu1.2, 0.105-26ubuntu1.3, 0.105-31, 0.105-31.1, 0.105-31ubuntu1, 0.105-32, 0.105-33, 0.105-33ubuntu0.1, 0.105-33ubuntu0.2, 0.105-3ubuntu3, 0.105-4ubuntu1, 0.105-4ubuntu2, 0.105-4ubuntu2.14.04.1, 0.105-4ubuntu3.14.04.1, 0.105-4ubuntu3.14.04.2, 0.105-4ubuntu3.14.04.5, 0.105-4ubuntu3.14.04.6, 0.105-4ubuntu3.14.04.6+esm1, 123-1, 123-3, 124-1, 124-1ubuntu1, 124-2ubuntu1, 124-2ubuntu1.24.04.2, 124-2ubuntu1.24.04.3, 124-2ubuntu1.24.04.4, 126-2, 126-2ubuntu0.1, 127-1, 127-2, 127-2ubuntu1, 127-2ubuntu1.1, 127-3, 127-3ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2016-2568
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:21 UTC · Revision 1
Source evidence
pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.
osv:UBUNTU-CVE-2016-2568
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
policykit-1
Fixed versions: Not specified
Complete source record
{
"id": "d97a02874bf474c24d813ba626d3a9975cb43f08ec66b34eaefda20d9dd01d86",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2016-2568",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2016-2568",
"summary": "pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.",
"evidence": "osv:UBUNTU-CVE-2016-2568",
"products": [
{
"name": {
"value": "policykit-1",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.105-3ubuntu3",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu2.14.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu3.14.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu3.14.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu3.14.04.5",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu3.14.04.6",
"evidence": "/affected/0/versions"
},
{
"value": "0.105-4ubuntu3.14.04.6+esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.105-11ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-13",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-13ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-14",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-14.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-14.1ubuntu0.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-14.1ubuntu0.4",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-14.1ubuntu0.5",
"evidence": "/affected/1/versions"
},
{
"value": "0.105-14.1ubuntu0.5+esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.105-18",
"evidence": "/affected/2/versions"
},
{
"value": "0.105-20",
"evidence": "/affected/2/versions"
},
{
"value": "0.105-20ubuntu0.18.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.105-20ubuntu0.18.04.4",
"evidence": "/affected/2/versions"
},
{
"value": "0.105-20ubuntu0.18.04.5",
"evidence": "/affected/2/versions"
},
{
"value": "0.105-20ubuntu0.18.04.6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.105-26ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "0.105-26ubuntu1.1",
"evidence": "/affected/3/versions"
},
{
"value": "0.105-26ubuntu1.2",
"evidence": "/affected/3/versions"
},
{
"value": "0.105-26ubuntu1.3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.105-31",
"evidence": "/affected/4/versions"
},
{
"value": "0.105-31ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "0.105-31.1",
"evidence": "/affected/4/versions"
},
{
"value": "0.105-32",
"evidence": "/affected/4/versions"
},
{
"value": "0.105-33",
"evidence": "/affected/4/versions"
},
{
"value": "0.105-33ubuntu0.1",
"evidence": "/affected/4/versions"
},
{
"value": "0.105-33ubuntu0.2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "123-1",
"evidence": "/affected/5/versions"
},
{
"value": "123-3",
"evidence": "/affected/5/versions"
},
{
"value": "124-1",
"evidence": "/affected/5/versions"
},
{
"value": "124-1ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "124-2ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "124-2ubuntu1.24.04.2",
"evidence": "/affected/5/versions"
},
{
"value": "124-2ubuntu1.24.04.3",
"evidence": "/affected/5/versions"
},
{
"value": "124-2ubuntu1.24.04.4",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "126-2",
"evidence": "/affected/6/versions"
},
{
"value": "126-2ubuntu0.1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "127-2ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "127-3",
"evidence": "/affected/7/versions"
},
{
"value": "127-3ubuntu1",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "policykit-1",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "126-2",
"evidence": "/affected/8/versions"
},
{
"value": "127-1",
"evidence": "/affected/8/versions"
},
{
"value": "127-2",
"evidence": "/affected/8/versions"
},
{
"value": "127-2ubuntu1",
"evidence": "/affected/8/versions"
},
{
"value": "127-2ubuntu1.1",
"evidence": "/affected/8/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2016-2568",
"aliases": [
"UBUNTU-CVE-2016-2568"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=esm-infra-legacy%2Ftrusty",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"0.105-3ubuntu3",
"0.105-4ubuntu1",
"0.105-4ubuntu2",
"0.105-4ubuntu2.14.04.1",
"0.105-4ubuntu3.14.04.1",
"0.105-4ubuntu3.14.04.2",
"0.105-4ubuntu3.14.04.5",
"0.105-4ubuntu3.14.04.6",
"0.105-4ubuntu3.14.04.6+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "0.105-4ubuntu3.14.04.6+esm1"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "0.105-4ubuntu3.14.04.6+esm1"
},
{
"binary_name": "libpolkit-backend-1-0",
"binary_version": "0.105-4ubuntu3.14.04.6+esm1"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "0.105-4ubuntu3.14.04.6+esm1"
},
{
"binary_name": "policykit-1",
"binary_version": "0.105-4ubuntu3.14.04.6+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=esm-infra%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"0.105-11ubuntu2",
"0.105-13",
"0.105-13ubuntu1",
"0.105-14",
"0.105-14.1",
"0.105-14.1ubuntu0.1",
"0.105-14.1ubuntu0.4",
"0.105-14.1ubuntu0.5",
"0.105-14.1ubuntu0.5+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "0.105-14.1ubuntu0.5+esm1"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "0.105-14.1ubuntu0.5+esm1"
},
{
"binary_name": "libpolkit-backend-1-0",
"binary_version": "0.105-14.1ubuntu0.5+esm1"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "0.105-14.1ubuntu0.5+esm1"
},
{
"binary_name": "policykit-1",
"binary_version": "0.105-14.1ubuntu0.5+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.105-18",
"0.105-20",
"0.105-20ubuntu0.18.04.1",
"0.105-20ubuntu0.18.04.4",
"0.105-20ubuntu0.18.04.5",
"0.105-20ubuntu0.18.04.6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "0.105-20ubuntu0.18.04.6"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "0.105-20ubuntu0.18.04.6"
},
{
"binary_name": "libpolkit-backend-1-0",
"binary_version": "0.105-20ubuntu0.18.04.6"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "0.105-20ubuntu0.18.04.6"
},
{
"binary_name": "policykit-1",
"binary_version": "0.105-20ubuntu0.18.04.6"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.105-26ubuntu1",
"0.105-26ubuntu1.1",
"0.105-26ubuntu1.2",
"0.105-26ubuntu1.3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "0.105-26ubuntu1.3"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "0.105-26ubuntu1.3"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "0.105-26ubuntu1.3"
},
{
"binary_name": "policykit-1",
"binary_version": "0.105-26ubuntu1.3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.105-31",
"0.105-31ubuntu1",
"0.105-31.1",
"0.105-32",
"0.105-33",
"0.105-33ubuntu0.1",
"0.105-33ubuntu0.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "0.105-33ubuntu0.2"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "0.105-33ubuntu0.2"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "0.105-33ubuntu0.2"
},
{
"binary_name": "pkexec",
"binary_version": "0.105-33ubuntu0.2"
},
{
"binary_name": "policykit-1",
"binary_version": "0.105-33ubuntu0.2"
},
{
"binary_name": "polkitd",
"binary_version": "0.105-33ubuntu0.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"123-1",
"123-3",
"124-1",
"124-1ubuntu1",
"124-2ubuntu1",
"124-2ubuntu1.24.04.2",
"124-2ubuntu1.24.04.3",
"124-2ubuntu1.24.04.4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "124-2ubuntu1.24.04.4"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "124-2ubuntu1.24.04.4"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "124-2ubuntu1.24.04.4"
},
{
"binary_name": "pkexec",
"binary_version": "124-2ubuntu1.24.04.4"
},
{
"binary_name": "policykit-1",
"binary_version": "124-2ubuntu1.24.04.4"
},
{
"binary_name": "polkitd",
"binary_version": "124-2ubuntu1.24.04.4"
},
{
"binary_name": "polkitd-pkla",
"binary_version": "124-2ubuntu1.24.04.4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"126-2",
"126-2ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "126-2ubuntu0.1"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "126-2ubuntu0.1"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "126-2ubuntu0.1"
},
{
"binary_name": "pkexec",
"binary_version": "126-2ubuntu0.1"
},
{
"binary_name": "polkitd",
"binary_version": "126-2ubuntu0.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"127-2ubuntu1",
"127-3",
"127-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "127-3ubuntu1"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "127-3ubuntu1"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "127-3ubuntu1"
},
{
"binary_name": "pkexec",
"binary_version": "127-3ubuntu1"
},
{
"binary_name": "polkitd",
"binary_version": "127-3ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/ubuntu/policykit-1?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"126-2",
"127-1",
"127-2",
"127-2ubuntu1",
"127-2ubuntu1.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2568.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gir1.2-polkit-1.0",
"binary_version": "127-2ubuntu1.1"
},
{
"binary_name": "libpolkit-agent-1-0",
"binary_version": "127-2ubuntu1.1"
},
{
"binary_name": "libpolkit-gobject-1-0",
"binary_version": "127-2ubuntu1.1"
},
{
"binary_name": "pkexec",
"binary_version": "127-2ubuntu1.1"
},
{
"binary_name": "polkitd",
"binary_version": "127-2ubuntu1.1"
}
]
}
}
],
"modified": "2026-10-17T12:52:54.181042153Z",
"provider": "osv",
"upstream": [
"CVE-2016-2568"
],
"references": [
"https://ubuntu.com/security/CVE-2016-2568",
"https://lore.kernel.org/patchwork/patch/793178/",
"https://www.cve.org/CVERecord?id=CVE-2016-2568"
]
},
"related_cves": [
{
"value": "CVE-2016-2568",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 353347,
"published_at": "2017-02-13T18:59:00+00:00"
}