# CVE-2021-22569: protobuf: An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that w... CVE-2021-22569 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2021-22569, released January 10, 2022. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2021-22569 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: 0.0180 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jan 10, 2022 ## Description An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | elpa-protobuf-mode Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [elpa-protobuf-mode 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-elpa-protobuf-mode-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | libprotobuf-java Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [libprotobuf-java 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libprotobuf-java-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | libprotobuf-java Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [libprotobuf-java 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libprotobuf-java-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | libprotobuf-java Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [libprotobuf-java 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libprotobuf-java-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | libprotobuf-lite10 Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [libprotobuf-lite10 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libprotobuf-lite10-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | libprotobuf-lite17 Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [libprotobuf-lite17 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libprotobuf-lite17-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | libprotobuf-lite23 Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [libprotobuf-lite23 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libprotobuf-lite23-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | libprotobuf10 Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [libprotobuf10 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libprotobuf10-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | libprotobuf17 Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [libprotobuf17 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libprotobuf17-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | libprotobuf23 Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [libprotobuf23 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libprotobuf23-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | libprotoc10 Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [libprotoc10 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libprotoc10-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | libprotoc17 Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [libprotoc17 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libprotoc17-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | libprotoc23 Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [libprotoc23 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libprotoc23-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | protobuf Debian 12.15 (bookworm) | 3.21.9-3 | [DEBIAN-CVE-2021-22569](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22569.md) | Jan 10, 2022 | | Linux | protobuf Debian 13.5 (trixie) | 3.21.9-3 | [DEBIAN-CVE-2021-22569](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22569.md) | Jan 10, 2022 | | Linux | protobuf Debian 14 | 3.21.9-3 | [DEBIAN-CVE-2021-22569](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22569.md) | Jan 10, 2022 | | Linux | protobuf-compiler Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [protobuf-compiler 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-protobuf-compiler-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | protobuf-compiler Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [protobuf-compiler 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-protobuf-compiler-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | protobuf-compiler Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [protobuf-compiler 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-protobuf-compiler-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | python-protobuf Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [python-protobuf 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-protobuf-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | python-protobuf Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [python-protobuf 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python-protobuf-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | python3-protobuf Ubuntu 18.04.6 LTS (bionic) | 3.0.0-9.1ubuntu1.1 | [python3-protobuf 3.0.0-9.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-protobuf-3.0.0-9.1ubuntu1.1.md) | Sep 22, 2022 | | Linux | python3-protobuf Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [python3-protobuf 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-protobuf-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | python3-protobuf Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [python3-protobuf 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-protobuf-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | | Linux | ruby-google-protobuf Ubuntu 20.04 LTS (focal) | 3.6.1.3-2ubuntu5.2 | [ruby-google-protobuf 3.6.1.3-2ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ruby-google-protobuf-3.6.1.3-2ubuntu5.2.md) | Sep 22, 2022 | | Linux | ruby-google-protobuf Ubuntu 22.04.1 LTS (jammy) | 3.12.4-1ubuntu7.22.04.1 | [ruby-google-protobuf 3.12.4-1ubuntu7.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ruby-google-protobuf-3.12.4-1ubuntu7.22.04.1.md) | Sep 22, 2022 | --- Data as of 2026-11-09T01:18:40Z 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.