Catalogo CVE

CVE-2026-40355

Gravità: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Apr 27, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.85% · Oct 22, 2026

In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	krb5	sid	`1.22.1-3`	fixed
Debian	krb5	forky	`1.22.1-3`	fixed
Debian	krb5	trixie	`1.21.3-5+deb13u1`	fixed
Debian	krb5	trixie-security	`1.21.3-5+deb13u1`	fixed
Debian	krb5	bookworm	`1.20.1-2+deb12u5`	fixed
Debian	krb5	bookworm-security	`1.20.1-2+deb12u5`	fixed
Cpe	kerberos_5	Not reported	Not reported	unknown
Ubuntu	krb5	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-admin-server	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-doc	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-gss-samples	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-k5tls	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-kdc	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-kdc-ldap	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-kpropd	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-locales	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-multidev	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-otp	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-pkinit	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5-user	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libgssapi-krb5-2	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libgssrpc4t64	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libk5crypto3	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkadm5clnt-mit12	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkadm5srv-mit12	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkdb5-10t64	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkrad-dev	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkrad0	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkrb5-3	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkrb5-dev	noble	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	libkrb5support0	noble	`1.20.1-6ubuntu2.7`	fixed
Cpe	kerberos_5	Not reported	Not reported	unknown
Ubuntu	krb5	22.04	`1.18.3-6`	vulnerable
Ubuntu	krb5	22.04	`1.18.3-7`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-0ubuntu1`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-1`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.1`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.2`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.3`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.4`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.5`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.6`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.7`	vulnerable
Ubuntu	krb5	22.04	`1.19.2-2ubuntu0.8`	fixed
Ubuntu	krb5	24.04	`1.20.1-3ubuntu1`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-5build1`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu1`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.1`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.2`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.3`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.4`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.5`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.6`	vulnerable
Ubuntu	krb5	24.04	`1.20.1-6ubuntu2.7`	fixed
Ubuntu	krb5	25.10	`1.21.3-4ubuntu2`	vulnerable
Ubuntu	krb5	25.10	`1.21.3-5ubuntu1`	vulnerable
Ubuntu	krb5	25.10	`1.21.3-5ubuntu2`	vulnerable
Ubuntu	krb5	26.04	`1.21.3-5ubuntu2`	vulnerable
Ubuntu	krb5	26.04	`1.22.1-2`	vulnerable
Ubuntu	krb5	26.04	`1.22.1-2ubuntu2`	vulnerable
Ubuntu	krb5	26.04	`1.22.1-2ubuntu3`	vulnerable
Ubuntu	krb5	26.04	`1.22.1-2ubuntu4`	vulnerable
Ubuntu	krb5	26.04	`1.22.1-2ubuntu4.1`	fixed
Suse	krb5	linux enterprise server 16.0	`1.21.3-160000.3.1`	fixed
Suse	krb5	linux enterprise server for sap applications 16.0	`1.21.3-160000.3.1`	fixed
Opensuse	krb5	leap 16.0	`1.21.3-160000.3.1`	fixed
Suse	krb5	linux micro 6.2	`1.21.3-160000.3.1`	fixed
Suse	krb5	linux enterprise micro 5.3	`1.19.2-150400.3.21.1`	fixed
Suse	krb5	linux enterprise micro 5.4	`1.19.2-150400.3.21.1`	fixed
Opensuse	krb5	tumbleweed	`1.22.2-3.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	krb5	source	sid	`1.22.1-2.1`	not yet assigned	Not reported	[1135317]
Debian	krb5	source	forky	`1.22.1-2.1`	not yet assigned	Not reported	[1135317]
Debian	krb5	source	trixie	`1.21.3-5+deb13u1`	not yet assigned	Not reported	[1135317]
Debian	krb5	source	bookworm	`1.20.1-2+deb12u5`	not yet assigned	Not reported	[1135317]
Ubuntu	krb5	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-admin-server	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-doc	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-gss-samples	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-k5tls	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-kdc	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-kdc-ldap	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-kpropd	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-locales	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-multidev	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-otp	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-pkinit	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5-user	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libgssapi-krb5-2	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libgssrpc4t64	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libk5crypto3	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkadm5clnt-mit12	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkadm5srv-mit12	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkdb5-10t64	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkrad-dev	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkrad0	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkrb5-3	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkrb5-dev	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	libkrb5support0	deb	noble	`1.20.1-6ubuntu2.7`	Not reported	Not reported	Not reported
Ubuntu	krb5	deb	22.04	`1.19.2-2ubuntu0.8`	Not reported	UBUNTU-CVE-2026-40355	Not reported
Ubuntu	krb5	deb	24.04	`1.20.1-6ubuntu2.7`	Not reported	UBUNTU-CVE-2026-40355	Not reported
Ubuntu	krb5	deb	26.04	`1.22.1-2ubuntu4.1`	Not reported	UBUNTU-CVE-2026-40355	Not reported
Suse	krb5	rpm	linux enterprise server 16.0	`1.21.3-160000.3.1`	Not reported	SUSE-SU-2026:22322-1	Not reported
Suse	krb5	rpm	linux enterprise server for sap applications 16.0	`1.21.3-160000.3.1`	Not reported	SUSE-SU-2026:22322-1	Not reported
Opensuse	krb5	rpm	leap 16.0	`1.21.3-160000.3.1`	Not reported	OPENSUSE-SU-2026:21021-1	Not reported
Suse	krb5	rpm	linux micro 6.2	`1.21.3-160000.3.1`	Not reported	SUSE-SU-2026:22255-1	Not reported
Suse	krb5	rpm	linux enterprise micro 5.3	`1.19.2-150400.3.21.1`	Not reported	SUSE-SU-2026:2449-1	Not reported
Suse	krb5	rpm	linux enterprise micro 5.4	`1.19.2-150400.3.21.1`	Not reported	SUSE-SU-2026:2449-1	Not reported
Opensuse	krb5	rpm	tumbleweed	`1.22.2-3.1`	Not reported	OPENSUSE-SU-2026:10729-1	Not reported

[Debian bug #1135317]

OpenFactory catalog packages

[openSUSE Tumbleweed]

[krb5-32bit]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-client]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-devel]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-devel-32bit]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-plugin-kdb-ldap]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-plugin-preauth-otp]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-plugin-preauth-pkinit]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-plugin-preauth-spake]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed
[krb5-server]Sconosciuto
Pacchetto sorgente: [krb5]
Dettagli (1)
- 1.22.2-4.2 · x86_64 · tumbleweed
  Sconosciuto · Corretta: 1.22.2-3.1
  Version impact unknown
  nvd · krb5 · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[krb5-admin-server]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-doc]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · all · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · all · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · all · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · all · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-gss-samples]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-k5tls]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-kdc]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-kdc-ldap]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-kpropd]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-locales]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · all · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · all · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · all · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · all · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-multidev]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-otp]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
[krb5-pkinit]Corretta
Pacchetto sorgente: [krb5]
Dettagli (4)
- 1.20.1-2+deb12u5 · amd64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · amd64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm
- 1.20.1-2+deb12u5 · arm64 · bookworm-security
  Corretta · Corretta: 1.20.1-2+deb12u5
  nvd · krb5 · debian · bookworm

Altri risultati

Osservato: Oct 23, 2026, 10:26:20 PM UTC

Riferimenti

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]