DEBIAN-CVE-2026-90994
A flaw was found in sssd, specifically within the PAM (Pluggable Authentication Modules) responder's protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.
DEBIAN-CVE-2026-90994
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-2026-90994
sssd
Source reference: /affected/0/package/name
- Affected versions
- 2.10.1-1
Source reference:
/affected/0/versions2.10.1-2Source 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/versions2.8.2-4Source reference:
/affected/0/versions2.8.2-4+deb12u1Source reference:
/affected/0/versions2.9.1-1Source reference:
/affected/0/versions2.9.1-2Source reference:
/affected/0/versions2.9.2-1Source reference:
/affected/0/versions2.9.4-1Source reference:
/affected/0/versions2.9.4-1.1Source reference:
/affected/0/versions2.9.4-1.1~exp1Source reference:
/affected/0/versions2.9.4-2Source reference:
/affected/0/versions2.9.5-1Source reference:
/affected/0/versions2.9.5-2Source reference:
/affected/0/versions2.9.5-3Source reference:
/affected/0/versions2.9.5-4Source reference:
/affected/0/versions2.9.5-5Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
sssd
Source reference: /affected/1/package/name
- Affected versions
- 2.10.1-2
Source reference:
/affected/1/versions2.11.1-1Source reference:
/affected/1/versions2.11.1-2Source reference:
/affected/1/versions2.11.1-2.1Source reference:
/affected/1/versions2.12.0-1Source reference:
/affected/1/versions2.12.0-2Source reference:
/affected/1/versions2.12.0-3~exp0Source reference:
/affected/1/versions2.12.0-4Source reference:
/affected/1/versions2.13.1-1Source reference:
/affected/1/versions2.13.1-2Source reference:
/affected/1/versions2.13.1-3Source reference:
/affected/1/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=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.10.1-1",
"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",
"2.8.2-4",
"2.8.2-4+deb12u1",
"2.9.1-1",
"2.9.1-2",
"2.9.2-1",
"2.9.4-1",
"2.9.4-1.1",
"2.9.4-1.1~exp1",
"2.9.4-2",
"2.9.5-1",
"2.9.5-2",
"2.9.5-3",
"2.9.5-4",
"2.9.5-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90994.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"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-2026-90994.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58412 · Revision 1
- Added to Heist Feed
- Publisher date