# CVE-2022-1473: libssl3t64: The OPENSSL_LH_flush() function, which empties a hash table, contains a bugthat breaks reuse of the memory occuppied... CVE-2022-1473 is fixed in 9 products on 1 platform, first by libssl3 3.0.2-0ubuntu1.1, released May 2, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-1473 - Priority: High - CVSS: 7.5 (Low) - EPSS: 0.0468 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 2, 2022 ## Description The OPENSSL_LH_flush() function, which empties a hash table, contains a bugthat breaks reuse of the memory occuppied by the removed hash tableentries. This function is used when decoding certificates or keys. If along lived process periodically decodes certificates or keys its memoryusage will expand without bounds and the process might be terminated by theoperating system causing a denial of service. Also traversing the emptyhash table entries will take increasingly more time. Typically such longlived processes might be TLS clients or TLS servers configured to acceptclient certificate authentication. The function was added in the OpenSSL3.0 version thus older releases are not affected by the issue. Fixed inOpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2). ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libssl3 Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.1 | [libssl3 3.0.2-0ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssl3-3.0.2-0ubuntu1.1.md) | May 2, 2022 | | Linux | libssl3t64 Ubuntu 24.10 (oracular) | 3.0.2-0ubuntu2 | [libssl3t64 3.0.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libssl3t64-3.0.2-0ubuntu2.md) | May 3, 2022 | | Linux | libssl3t64 Ubuntu 25.04 (plucky) | 3.0.2-0ubuntu2 | [libssl3t64 3.0.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssl3t64-3.0.2-0ubuntu2.md) | May 3, 2022 | | Linux | openssl RHEL 9 | 1:3.0.1-41.el9_0 | [RHSA-2022:6224](https://patchblox.com/security/data/fix/linux/rhsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.1 | [openssl 3.0.2-0ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssl-3.0.2-0ubuntu1.1.md) | May 2, 2022 | | Linux | openssl Ubuntu 24.10 (oracular) | 3.0.2-0ubuntu2 | [openssl 3.0.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openssl-3.0.2-0ubuntu2.md) | May 3, 2022 | | Linux | openssl Ubuntu 25.04 (plucky) | 3.0.2-0ubuntu2 | [openssl 3.0.2-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-3.0.2-0ubuntu2.md) | May 3, 2022 | | Linux | openssl almalinux 9 | 1:3.0.1-41.el9_0 | [ALSA-2022:6224](https://patchblox.com/security/data/fix/linux/alsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl ol 9 | 2:3.0.1-41.0.1.ksplice1.el9_0 | [ELSA-2022-9751](https://patchblox.com/security/data/fix/linux/elsa-2022-9751.md) | Aug 31, 2022 | | Linux | openssl-debuginfo amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl-debugsource amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl-devel RHEL 9 | 1:3.0.1-41.el9_0 | [RHSA-2022:6224](https://patchblox.com/security/data/fix/linux/rhsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl-devel almalinux 9 | 1:3.0.1-41.el9_0 | [ALSA-2022:6224](https://patchblox.com/security/data/fix/linux/alsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl-devel amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl-devel ol 9 | 2:3.0.1-41.0.1.ksplice1.el9_0 | [ELSA-2022-9751](https://patchblox.com/security/data/fix/linux/elsa-2022-9751.md) | Aug 31, 2022 | | Linux | openssl-libs RHEL 9 | 1:3.0.1-41.el9_0 | [RHSA-2022:6224](https://patchblox.com/security/data/fix/linux/rhsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl-libs almalinux 9 | 1:3.0.1-41.el9_0 | [ALSA-2022:6224](https://patchblox.com/security/data/fix/linux/alsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl-libs amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl-libs ol 9 | 2:3.0.1-41.0.1.ksplice1.el9_0 | [ELSA-2022-9751](https://patchblox.com/security/data/fix/linux/elsa-2022-9751.md) | Aug 31, 2022 | | Linux | openssl-libs-debuginfo amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl-perl RHEL 9 | 1:3.0.1-41.el9_0 | [RHSA-2022:6224](https://patchblox.com/security/data/fix/linux/rhsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl-perl almalinux 9 | 1:3.0.1-41.el9_0 | [ALSA-2022:6224](https://patchblox.com/security/data/fix/linux/alsa-2022-6224.md) | Aug 30, 2022 | | Linux | openssl-perl amzn 2023 | 1:3.0.5-1.amzn2023.0.4 | [ALAS2023-2023-051](https://patchblox.com/security/data/fix/linux/alas2023-2023-051.md) | Feb 17, 2023 | | Linux | openssl-perl ol 9 | 2:3.0.1-41.0.1.ksplice1.el9_0 | [ELSA-2022-9751](https://patchblox.com/security/data/fix/linux/elsa-2022-9751.md) | Aug 31, 2022 | --- Data as of 2026-11-08T06:59:42Z UTC. 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