DEBIAN-CVE-2026-18938
A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.
DEBIAN-CVE-2026-18938
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-2026-18938
p11-kit
Source reference: /affected/0/package/name
- Affected versions
- 0.24.1-2
Source reference:
/affected/0/versions0.24.1-2+loong64Source reference:
/affected/0/versions0.25.0-1Source reference:
/affected/0/versions0.25.0-2Source reference:
/affected/0/versions0.25.0-3Source reference:
/affected/0/versions0.25.0-4Source reference:
/affected/0/versions0.25.0-5Source reference:
/affected/0/versions0.25.1-1Source reference:
/affected/0/versions0.25.10-1Source reference:
/affected/0/versions0.25.2-1Source reference:
/affected/0/versions0.25.3-1Source reference:
/affected/0/versions0.25.3-2Source reference:
/affected/0/versions0.25.3-3Source reference:
/affected/0/versions0.25.3-4Source reference:
/affected/0/versions0.25.3-5Source reference:
/affected/0/versions0.25.5-1Source reference:
/affected/0/versions0.25.5-2Source reference:
/affected/0/versions0.25.5-3Source reference:
/affected/0/versions0.25.9-1Source reference:
/affected/0/versions0.25.9-2Source reference:
/affected/0/versions0.26.2-1Source reference:
/affected/0/versions0.26.2-2Source reference:
/affected/0/versions0.26.2-3Source reference:
/affected/0/versions0.26.4-1Source reference:
/affected/0/versions0.26.5-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
p11-kit
Source reference: /affected/1/package/name
- Affected versions
- 0.25.10-1
Source reference:
/affected/1/versions0.25.5-3Source reference:
/affected/1/versions0.25.9-1Source reference:
/affected/1/versions0.25.9-2Source reference:
/affected/1/versions0.26.2-1Source reference:
/affected/1/versions0.26.2-2Source reference:
/affected/1/versions0.26.2-3Source reference:
/affected/1/versions0.26.4-1Source reference:
/affected/1/versions0.26.5-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
p11-kit
Source reference: /affected/2/package/name
- Affected versions
- 0.25.10-1
Source reference:
/affected/2/versions0.25.5-3Source reference:
/affected/2/versions0.25.9-1Source reference:
/affected/2/versions0.25.9-2Source reference:
/affected/2/versions0.26.2-1Source reference:
/affected/2/versions0.26.2-2Source reference:
/affected/2/versions0.26.2-3Source reference:
/affected/2/versions0.26.4-1Source reference:
/affected/2/versions - Fixed versions
- 0.26.5-1
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": "p11-kit",
"purl": "pkg:deb/debian/p11-kit?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.24.1-2",
"0.24.1-2+loong64",
"0.25.0-1",
"0.25.0-2",
"0.25.0-3",
"0.25.0-4",
"0.25.0-5",
"0.25.1-1",
"0.25.10-1",
"0.25.2-1",
"0.25.3-1",
"0.25.3-2",
"0.25.3-3",
"0.25.3-4",
"0.25.3-5",
"0.25.5-1",
"0.25.5-2",
"0.25.5-3",
"0.25.9-1",
"0.25.9-2",
"0.26.2-1",
"0.26.2-2",
"0.26.2-3",
"0.26.4-1",
"0.26.5-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18938.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "p11-kit",
"purl": "pkg:deb/debian/p11-kit?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.25.10-1",
"0.25.5-3",
"0.25.9-1",
"0.25.9-2",
"0.26.2-1",
"0.26.2-2",
"0.26.2-3",
"0.26.4-1",
"0.26.5-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18938.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.26.5-1"
}
]
}
],
"package": {
"name": "p11-kit",
"purl": "pkg:deb/debian/p11-kit?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.25.10-1",
"0.25.5-3",
"0.25.9-1",
"0.25.9-2",
"0.26.2-1",
"0.26.2-2",
"0.26.2-3",
"0.26.4-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18938.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56176 · Revision 1
- Added to Heist Feed
- Publisher date