DEBIAN-CVE-2026-14612
Two off-by-one errors in the FreeIPA ipa-otpd daemon's OAuth2 device authorization handler can cause out-of-bounds memory access when processing an oversized response from a configured external OAuth2/OIDC Identity Provider. An attacker who controls or can man-in-the-middle the IdP endpoint may be able to trigger ipa-otpd to write or read one byte past the end of a fixed-size buffer. Exploitation requires FreeIPA to be configured with an external IdP, attacker control or MITM of that IdP, and a user to initiate the OAuth2 device authorization flow. The most likely impact is limited denial of service affecting the ipa-otpd daemon.
DEBIAN-CVE-2026-14612
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-2026-14612
freeipa
Source reference: /affected/0/package/name
- Affected versions
- 4.10.1+dfsg1-1+exp1
Source reference:
/affected/0/versions4.10.1-1+exp1Source reference:
/affected/0/versions4.10.2-1Source reference:
/affected/0/versions4.10.2-2Source reference:
/affected/0/versions4.10.2-2+exp1Source reference:
/affected/0/versions4.11.1-1Source reference:
/affected/0/versions4.11.1-1+exp1Source reference:
/affected/0/versions4.11.1-2Source reference:
/affected/0/versions4.11.1-2+exp1Source reference:
/affected/0/versions4.11.1-2.1Source reference:
/affected/0/versions4.12.2-1Source reference:
/affected/0/versions4.12.2-2Source reference:
/affected/0/versions4.12.2-3Source reference:
/affected/0/versions4.12.4-1Source reference:
/affected/0/versions4.12.4-2Source reference:
/affected/0/versions4.13.1-1Source reference:
/affected/0/versions4.9.11-1Source reference:
/affected/0/versions4.9.11-1+exp1Source reference:
/affected/0/versions4.9.11-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
freeipa
Source reference: /affected/1/package/name
- Affected versions
- 4.12.4-1
Source reference:
/affected/1/versions4.12.4-2Source reference:
/affected/1/versions4.13.1-1Source 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": "freeipa",
"purl": "pkg:deb/debian/freeipa?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.10.1+dfsg1-1+exp1",
"4.10.1-1+exp1",
"4.10.2-1",
"4.10.2-2",
"4.10.2-2+exp1",
"4.11.1-1",
"4.11.1-1+exp1",
"4.11.1-2",
"4.11.1-2+exp1",
"4.11.1-2.1",
"4.12.2-1",
"4.12.2-2",
"4.12.2-3",
"4.12.4-1",
"4.12.4-2",
"4.13.1-1",
"4.9.11-1",
"4.9.11-1+exp1",
"4.9.11-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14612.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "freeipa",
"purl": "pkg:deb/debian/freeipa?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.12.4-1",
"4.12.4-2",
"4.13.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14612.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56099 · Revision 1
- Added to Heist Feed
- Publisher date