DEBIAN-CVE-2026-6245
A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).
DEBIAN-CVE-2026-6245
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-2026-6245
sssd
Source reference: /affected/0/package/name
- Affected versions
- 2.10.1-2
Source reference:
/affected/0/versions2.11.1-1Source reference:
/affected/0/versions2.11.1-2Source reference:
/affected/0/versions2.11.1-2.1Source reference:
/affected/0/versions2.12.0-1Source reference:
/affected/0/versions2.12.0-2Source reference:
/affected/0/versions2.12.0-3~exp0Source reference:
/affected/0/versions2.12.0-4Source reference:
/affected/0/versions2.13.1-1Source reference:
/affected/0/versions2.13.1-2Source reference:
/affected/0/versions2.13.1-3Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- 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": "sssd",
"purl": "pkg:deb/debian/sssd?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.10.1-2",
"2.11.1-1",
"2.11.1-2",
"2.11.1-2.1",
"2.12.0-1",
"2.12.0-2",
"2.12.0-3~exp0",
"2.12.0-4",
"2.13.1-1",
"2.13.1-2",
"2.13.1-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6245.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57348 · Revision 1
- Added to Heist Feed
- Publisher date