# CVE-2022-41916: heimdal: Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos CVE-2022-41916 is fixed in 23 products on 1 platform, first by heimdal-clients 7.5.0+dfsg-1ubuntu0.2, released November 15, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-41916 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0100 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Nov 15, 2022 ## Description Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | heimdal Debian 12.15 (bookworm) | 7.8.git20221115.a6cf945+dfsg-1 | [DEBIAN-CVE-2022-41916](https://patchblox.com/security/data/fix/linux/debian-cve-2022-41916.md) | Nov 15, 2022 | | Linux | heimdal Debian 13.5 (trixie) | 7.8.git20221115.a6cf945+dfsg-1 | [DEBIAN-CVE-2022-41916](https://patchblox.com/security/data/fix/linux/debian-cve-2022-41916.md) | Nov 15, 2022 | | Linux | heimdal Debian 14 | 7.8.git20221115.a6cf945+dfsg-1 | [DEBIAN-CVE-2022-41916](https://patchblox.com/security/data/fix/linux/debian-cve-2022-41916.md) | Nov 15, 2022 | | Linux | heimdal-clients Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [heimdal-clients 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-heimdal-clients-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | heimdal-clients Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [heimdal-clients 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-heimdal-clients-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | heimdal-docs Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [heimdal-docs 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-heimdal-docs-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | heimdal-docs Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [heimdal-docs 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-heimdal-docs-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | heimdal-kcm Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [heimdal-kcm 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-heimdal-kcm-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | heimdal-kcm Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [heimdal-kcm 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-heimdal-kcm-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | heimdal-kdc Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [heimdal-kdc 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-heimdal-kdc-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | heimdal-kdc Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [heimdal-kdc 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-heimdal-kdc-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | heimdal-multidev Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [heimdal-multidev 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-heimdal-multidev-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | heimdal-multidev Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [heimdal-multidev 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-heimdal-multidev-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | heimdal-servers Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [heimdal-servers 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-heimdal-servers-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | heimdal-servers Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [heimdal-servers 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-heimdal-servers-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libasn1-8-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libasn1-8-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libasn1-8-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libasn1-8-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libasn1-8-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libasn1-8-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libgssapi3-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libgssapi3-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgssapi3-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libgssapi3-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libgssapi3-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgssapi3-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libhcrypto4-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libhcrypto4-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libhcrypto4-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libhcrypto4-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libhcrypto4-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libhcrypto4-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libhdb9-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libhdb9-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libhdb9-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libhdb9-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libhdb9-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libhdb9-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libheimbase1-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libheimbase1-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libheimbase1-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libheimbase1-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libheimbase1-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libheimbase1-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libheimntlm0-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libheimntlm0-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libheimntlm0-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libheimntlm0-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libheimntlm0-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libheimntlm0-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libhx509-5-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libhx509-5-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libhx509-5-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libhx509-5-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libhx509-5-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libhx509-5-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libkadm5clnt7-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libkadm5clnt7-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkadm5clnt7-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libkadm5clnt7-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libkadm5clnt7-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libkadm5clnt7-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libkadm5srv8-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libkadm5srv8-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkadm5srv8-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libkadm5srv8-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libkadm5srv8-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libkadm5srv8-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libkafs0-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libkafs0-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkafs0-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libkafs0-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libkafs0-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libkafs0-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libkdc2-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libkdc2-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkdc2-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libkdc2-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libkdc2-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libkdc2-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libkrb5-26-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libkrb5-26-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkrb5-26-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libkrb5-26-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libkrb5-26-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libkrb5-26-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libotp0-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libotp0-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libotp0-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libotp0-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libotp0-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libotp0-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libroken18-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libroken18-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libroken18-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libroken18-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libroken18-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libroken18-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libsl0-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libsl0-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsl0-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libsl0-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libsl0-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsl0-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | | Linux | libwind0-heimdal Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.2 | [libwind0-heimdal 7.5.0+dfsg-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwind0-heimdal-7.5.0-dfsg-1ubuntu0.2.md) | Nov 15, 2022 | | Linux | libwind0-heimdal Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.2 | [libwind0-heimdal 7.7.0+dfsg-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libwind0-heimdal-7.7.0-dfsg-1ubuntu1.2.md) | Nov 15, 2022 | --- Data as of 2026-11-08T13:06:02Z UTC. 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