Redis is an open source, in-memory database that persists on disk. In affected versions an integer overflow bug in Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default proto-max-bulk-len and client-query-buffer-limit configuration parameters to very large values and constructing specially crafted very large stream elements. The problem is fixed in Redis 6.2.6, 6.0.16 and 5.0.14. For users unable to upgrade an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade redisUpgrade redis-docUpgrade redis-devel | May 4, 2022 | Oct 4, 2021 |
| Alpine Linux | — | Upgrade redis | Mar 26, 2024 | Oct 4, 2021 |
| Amazon Linux Ami 2 | — | Upgrade redis-debuginfoUpgrade redisUpgrade redis-docUpgrade redis-devel | Sep 28, 2023 | Oct 4, 2021 |
| Centos_linux | — | Upgrade redis-develUpgrade redisUpgrade redis-debugsourceUpgrade redis-debuginfoUpgrade redis-doc | Oct 20, 2021 | Oct 19, 2021 |
| Debian | — | Upgrade redis | Nov 29, 2021 | Oct 4, 2021 |
| Freebsd | — | Upgrade redis6Upgrade redisUpgrade redis-develUpgrade redis5 | Nov 4, 2022 | Oct 5, 2021 |
| Gentoo Linux | — | Upgrade dev-db/redis. | Sep 30, 2022 | Oct 4, 2021 |
| Oracle_linux | — | Upgrade redis-develUpgrade redis-docUpgrade redis | Oct 20, 2021 | Oct 4, 2021 |
| Redhat_linux | — | Upgrade redis-debuginfoUpgrade redis-docUpgrade redis-debugsourceUpgrade redisUpgrade redis-devel | Oct 20, 2021 | Oct 19, 2021 |
| Redislabs Redis | — | Upgrade RedisLabs Redis to version 6.2.6Upgrade RedisLabs Redis to version 6.0.16Upgrade RedisLabs Redis to version 5.0.14 | Oct 17, 2025 | Oct 4, 2021 |
| Rocky_linux | — | Upgrade redis-debuginfoUpgrade redis-debugsourceUpgrade redisUpgrade redis-devel | Mar 12, 2024 | Oct 4, 2021 |
| Suse | — | Upgrade redis | Nov 24, 2021 | Oct 4, 2021 |
| Ubuntu | — | Upgrade redis-server (Ubuntu Pro)Upgrade redis-tools (Ubuntu Pro)Upgrade redis (Ubuntu Pro) | Mar 22, 2023 | Oct 4, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 4, 2021 |
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