# CVE-2026-40355: krb5-admin-server: In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_se...

CVE-2026-40355 is fixed in 40 products on 1 platform, first by FEDORA-2026-684396998A, released April 29, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-40355
- Priority: High
- CVSS: 7.5 (Medium)
- EPSS: 0.0065
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 27, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | krb5 Debian 12.15 (bookworm) | 1.20.1-2+deb12u5 | [DEBIAN-CVE-2026-40355](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40355.md) | May 27, 2026 |
| Linux | krb5 Debian 13.5 (trixie) | 1.21.3-5+deb13u1 | [DEBIAN-CVE-2026-40355](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40355.md) | May 27, 2026 |
| Linux | krb5 Debian 14 | 1.22.1-2.1 | [DEBIAN-CVE-2026-40355](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40355.md) | May 27, 2026 |
| Linux | krb5 Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5 RHEL 10 | 1.21.3-10.el10_2 | [RHSA-2026:19145](https://patchblox.com/security/data/fix/linux/rhsa-2026-19145.md) | May 27, 2026 |
| Linux | krb5 opensuse-leap 16.0 | 1.21.3-160000.3.1 | [OPENSUSE-SU-2026:21021-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21021-1.md) | Jun 22, 2026 |
| Linux | krb5 rocky 10 | 0:1.21.3-10.el10_2 | [RLSA-2026:19145](https://patchblox.com/security/data/fix/linux/rlsa-2026-19145.md) | May 29, 2026 |
| Linux | krb5 rocky 8 | 0:1.18.2-34.el8_10 | [RLSA-2026:16799](https://patchblox.com/security/data/fix/linux/rlsa-2026-16799.md) | May 14, 2026 |
| Linux | krb5 rocky 9 | 0:1.21.1-10.el9_8 | [RLSA-2026:19357](https://patchblox.com/security/data/fix/linux/rlsa-2026-19357.md) | May 28, 2026 |
| Linux | krb5 sles 15.6 | 1.20.1-150600.11.19.1 | [SUSE-SU-2026:2848-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2848-1.md) | Jul 10, 2026 |
| Linux | krb5 sles 15.7 | 1.20.1-150600.11.19.1 | [SUSE-SU-2026:2848-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2848-1.md) | Jul 10, 2026 |
| Linux | krb5 sles 16.0 | 1.21.3-160000.3.1 | [SUSE-SU-2026:22322-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22322-1.md) | Jun 22, 2026 |
| Linux | krb5-admin-server Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-admin-server 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-admin-server-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-admin-server Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-admin-server 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-admin-server-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-admin-server Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-admin-server 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-admin-server-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-debugsource Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-debugsource amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-devel Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-devel RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | krb5-devel RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-devel almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-devel almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-devel almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-devel amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-devel ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-devel ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-devel ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-gss-samples Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-gss-samples 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-gss-samples-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-gss-samples Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-gss-samples 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-gss-samples-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-gss-samples Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-gss-samples 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-gss-samples-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-k5tls Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-k5tls 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-k5tls-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-k5tls Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-k5tls 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-k5tls-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-k5tls Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-k5tls 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-k5tls-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-kdc Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-kdc 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-kdc-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-kdc Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-kdc 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-kdc-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-kdc Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-kdc 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-kdc-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-kdc-ldap Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-kdc-ldap 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-kdc-ldap-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-kdc-ldap Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-kdc-ldap 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-kdc-ldap-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-kdc-ldap Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-kdc-ldap 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-kdc-ldap-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-kpropd Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-kpropd 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-kpropd-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-kpropd Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-kpropd 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-kpropd-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-kpropd Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-kpropd 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-kpropd-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-libs Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-libs RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | krb5-libs RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-libs almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-libs almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-libs almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-libs amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-libs ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-libs ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-libs ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-libs-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-libs-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-locales Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-locales 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-locales-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-locales Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-locales 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-locales-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-locales Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-locales 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-locales-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-multidev Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-multidev 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-multidev-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-multidev Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-multidev 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-multidev-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-multidev Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-multidev 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-multidev-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-otp Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-otp 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-otp-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-otp Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-otp 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-otp-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-otp Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-otp 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-otp-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-pkinit Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-pkinit RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | krb5-pkinit RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-pkinit Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-pkinit 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-pkinit-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-pkinit Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-pkinit 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-pkinit-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-pkinit Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-pkinit 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-pkinit-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-pkinit almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-pkinit almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-pkinit almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-pkinit amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-pkinit ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-pkinit ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-pkinit ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-pkinit-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-pkinit-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-server Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-server RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | krb5-server RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-server almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-server almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-server almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-server amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-server ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-server ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-server ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-server-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-server-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-server-ldap Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-server-ldap RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | krb5-server-ldap RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-server-ldap almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-server-ldap almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-server-ldap almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-server-ldap amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-server-ldap ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-server-ldap ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-server-ldap ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-server-ldap-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-server-ldap-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-tests Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-user Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [krb5-user 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-krb5-user-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | krb5-user Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [krb5-user 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-krb5-user-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | krb5-user Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [krb5-user 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-krb5-user-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | krb5-workstation Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-workstation RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | krb5-workstation RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-workstation almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-workstation almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-workstation almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-workstation amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-workstation ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-workstation ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | krb5-workstation ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-workstation-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-workstation-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | krb5-xrealmauthz Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | krb5-xrealmauthz RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | krb5-xrealmauthz almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | krb5-xrealmauthz almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | krb5-xrealmauthz ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | krb5-xrealmauthz ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | krb5-xrealmauthz-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | libgssapi-krb5-2 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libgssapi-krb5-2 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgssapi-krb5-2-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libgssapi-krb5-2 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libgssapi-krb5-2 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgssapi-krb5-2-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libgssapi-krb5-2 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libgssapi-krb5-2 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgssapi-krb5-2-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libgssrpc4 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libgssrpc4 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgssrpc4-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libgssrpc4t64 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libgssrpc4t64 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgssrpc4t64-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libgssrpc4t64 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libgssrpc4t64 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgssrpc4t64-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libk5crypto3 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libk5crypto3 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libk5crypto3-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libk5crypto3 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libk5crypto3 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libk5crypto3-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libk5crypto3 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libk5crypto3 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libk5crypto3-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libkadm5 Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | libkadm5 RHEL 8 | 0:1.18.2-34.el8_10 | [RHSA-2026:16799](https://patchblox.com/security/data/fix/linux/rhsa-2026-16799.md) | May 15, 2026 |
| Linux | libkadm5 RHEL 9 | 0:1.21.1-10.el9_8 | [RHSA-2026:19357](https://patchblox.com/security/data/fix/linux/rhsa-2026-19357.md) | May 27, 2026 |
| Linux | libkadm5 almalinux 10 | 1.21.3-10.el10_2 | [ALSA-2026:19145](https://patchblox.com/security/data/fix/linux/alsa-2026-19145.md) | May 19, 2026 |
| Linux | libkadm5 almalinux 8 | 1.18.2-34.el8_10 | [ALSA-2026:16799](https://patchblox.com/security/data/fix/linux/alsa-2026-16799.md) | May 13, 2026 |
| Linux | libkadm5 almalinux 9 | 1.21.1-10.el9_8 | [ALSA-2026:19357](https://patchblox.com/security/data/fix/linux/alsa-2026-19357.md) | May 19, 2026 |
| Linux | libkadm5 amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | libkadm5 ol 10 | 0:1.21.3-10.0.1.el10_2 | [ELSA-2026-19145](https://patchblox.com/security/data/fix/linux/elsa-2026-19145.md) | Jul 16, 2026 |
| Linux | libkadm5 ol 8 | 0:1.18.2-34.0.1.el8_10 | [ELSA-2026-16799](https://patchblox.com/security/data/fix/linux/elsa-2026-16799.md) | May 13, 2026 |
| Linux | libkadm5 ol 9 | 0:1.21.1-10.0.1.el9_8 | [ELSA-2026-19357](https://patchblox.com/security/data/fix/linux/elsa-2026-19357.md) | Jun 23, 2026 |
| Linux | libkadm5-debuginfo Fedora 43 | 1.22.2-4.fc43 | [FEDORA-2026-684396998A](https://patchblox.com/security/data/fix/linux/fedora-2026-684396998a.md) | Apr 29, 2026 |
| Linux | libkadm5-debuginfo amzn 2023 | 1.21.3-7.amzn2023.0.1 | [ALAS2023-2026-1680](https://patchblox.com/security/data/fix/linux/alas2023-2026-1680.md) | May 11, 2026 |
| Linux | libkadm5clnt-mit12 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libkadm5clnt-mit12 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libkadm5clnt-mit12-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libkadm5clnt-mit12 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libkadm5clnt-mit12 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libkadm5clnt-mit12-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libkadm5clnt-mit12 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libkadm5clnt-mit12 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libkadm5clnt-mit12-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libkadm5srv-mit12 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libkadm5srv-mit12 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libkadm5srv-mit12-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libkadm5srv-mit12 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libkadm5srv-mit12 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libkadm5srv-mit12-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libkadm5srv-mit12 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libkadm5srv-mit12 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libkadm5srv-mit12-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libkdb5-10 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libkdb5-10 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libkdb5-10-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libkdb5-10t64 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libkdb5-10t64 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libkdb5-10t64-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libkdb5-10t64 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libkdb5-10t64 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libkdb5-10t64-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libkrad0 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libkrad0 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libkrad0-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libkrad0 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libkrad0 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libkrad0-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libkrad0 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libkrad0 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libkrad0-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libkrb5-3 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libkrb5-3 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libkrb5-3-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libkrb5-3 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libkrb5-3 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libkrb5-3-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libkrb5-3 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libkrb5-3 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libkrb5-3-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |
| Linux | libkrb5support0 Ubuntu 22.04.1 LTS (jammy) | 1.19.2-2ubuntu0.8 | [libkrb5support0 1.19.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libkrb5support0-1.19.2-2ubuntu0.8.md) | Jun 11, 2026 |
| Linux | libkrb5support0 Ubuntu 24.04.5 LTS (noble) | 1.20.1-6ubuntu2.7 | [libkrb5support0 1.20.1-6ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libkrb5support0-1.20.1-6ubuntu2.7.md) | Jun 11, 2026 |
| Linux | libkrb5support0 Ubuntu 26.04.1 LTS (resolute) | 1.22.1-2ubuntu4.1 | [libkrb5support0 1.22.1-2ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libkrb5support0-1.22.1-2ubuntu4.1.md) | Jun 11, 2026 |

---

Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.