DEBIAN-CVE-2026-4897
A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.
DEBIAN-CVE-2026-4897
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-4897
policykit-1
Source reference: /affected/0/package/name
- Affected versions
- 122-3
Source reference:
/affected/0/versions122-4Source reference:
/affected/0/versions123-1Source reference:
/affected/0/versions123-2Source reference:
/affected/0/versions123-3Source reference:
/affected/0/versions124-1Source reference:
/affected/0/versions124-2Source reference:
/affected/0/versions124-3Source reference:
/affected/0/versions125-1Source reference:
/affected/0/versions125-2Source reference:
/affected/0/versions126-1Source reference:
/affected/0/versions126-2Source reference:
/affected/0/versions127-1Source reference:
/affected/0/versions127-2Source reference:
/affected/0/versions127-3Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
policykit-1
Source reference: /affected/1/package/name
- Affected versions
- 126-2
Source reference:
/affected/1/versions127-1Source reference:
/affected/1/versions127-2Source reference:
/affected/1/versions127-3Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
policykit-1
Source reference: /affected/2/package/name
- Affected versions
- 126-2
Source reference:
/affected/2/versions127-1Source reference:
/affected/2/versions127-2Source reference:
/affected/2/versions - Fixed versions
- 127-3
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/debian/policykit-1?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"122-3",
"122-4",
"123-1",
"123-2",
"123-3",
"124-1",
"124-2",
"124-3",
"125-1",
"125-2",
"126-1",
"126-2",
"127-1",
"127-2",
"127-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4897.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/debian/policykit-1?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"126-2",
"127-1",
"127-2",
"127-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4897.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "127-3"
}
]
}
],
"package": {
"name": "policykit-1",
"purl": "pkg:deb/debian/policykit-1?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"126-2",
"127-1",
"127-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4897.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56630 · Revision 1
- Added to Heist Feed
- Publisher date