# CVE-2025-21605: redis: Redis is an advanced key-value store

CVE-2025-21605 is fixed in 18 products on 1 platform, first by RHSA-2025:7509, released April 23, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-21605
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0087
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 23, 2025

## Description

Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can contain strings, hashes, lists, sets, and sorted sets. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log.  Security Fix(es):  * redis: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated client (CVE-2025-21605)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | redict Debian 14 | 7.3.5+ds-1 | [DEBIAN-CVE-2025-21605](https://patchblox.com/security/data/fix/linux/debian-cve-2025-21605.md) | Apr 23, 2025 |
| Linux | redis Debian 11.6 (bullseye) | 5:6.0.16-1+deb11u6 | [DLA-4162-1](https://patchblox.com/security/data/fix/linux/dla-4162-1.md) | May 12, 2025 |
| Linux | redis Debian 12.15 (bookworm) | 5:7.0.15-1~deb12u4 | [DEBIAN-CVE-2025-21605](https://patchblox.com/security/data/fix/linux/debian-cve-2025-21605.md) | Apr 23, 2025 |
| Linux | redis Debian 13.5 (trixie) | 5:7.0.15-3.1 | [DEBIAN-CVE-2025-21605](https://patchblox.com/security/data/fix/linux/debian-cve-2025-21605.md) | Apr 23, 2025 |
| Linux | redis Debian 14 | 5:7.0.15-3.1 | [DEBIAN-CVE-2025-21605](https://patchblox.com/security/data/fix/linux/debian-cve-2025-21605.md) | Apr 23, 2025 |
| Linux | redis RHEL 8 | 0:6.2.18-1.module+el8.10.0+23050+05ea4e95 | [RHSA-2025:7686](https://patchblox.com/security/data/fix/linux/rhsa-2025-7686.md) | May 15, 2025 |
| Linux | redis RHEL 9 | 0:6.2.18-1.el9_6 | [RHSA-2025:7438](https://patchblox.com/security/data/fix/linux/rhsa-2025-7438.md) | May 13, 2025 |
| Linux | redis almalinux 8 | 6.2.18-1.module_el8.10.0+3994+c2cc5395 | [ALSA-2025:7686](https://patchblox.com/security/data/fix/linux/alsa-2025-7686.md) | May 15, 2025 |
| Linux | redis almalinux 9 | 6.2.18-1.el9_6 | [ALSA-2025:7438](https://patchblox.com/security/data/fix/linux/alsa-2025-7438.md) | May 13, 2025 |
| Linux | redis ol 8 | 0:6.2.18-1.0.1.module+el8.10.0+90576+0f5e8f7a | [ELSA-2025-7686](https://patchblox.com/security/data/fix/linux/elsa-2025-7686.md) | May 16, 2025 |
| Linux | redis ol 9 | 0:7.2.8-1.module+el9.6.0+90585+92fe29a9 | [ELSA-2025-7429](https://patchblox.com/security/data/fix/linux/elsa-2025-7429.md) | May 21, 2025 |
| Linux | redis opensuse-leap 15.6 | 7.2.4-150600.3.9.1 | [SUSE-SU-2025:1433-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1433-1.md) | May 2, 2025 |
| Linux | redis rocky 8 | 0:6.2.18-1.module+el8.10.0+1980+8f0924a4 | [RLSA-2025:7686](https://patchblox.com/security/data/fix/linux/rlsa-2025-7686.md) | Jul 29, 2025 |
| Linux | redis rocky 9 | 0:6.2.18-1.el9_6 | [RLSA-2025:7438](https://patchblox.com/security/data/fix/linux/rlsa-2025-7438.md) | Oct 4, 2025 |
| Linux | redis sles 15.6 | 7.2.4-150600.3.9.1 | [SUSE-SU-2025:1433-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1433-1.md) | May 2, 2025 |
| Linux | redis-devel RHEL 8 | 0:6.2.18-1.module+el8.10.0+23050+05ea4e95 | [RHSA-2025:7686](https://patchblox.com/security/data/fix/linux/rhsa-2025-7686.md) | May 15, 2025 |
| Linux | redis-devel RHEL 9 | 0:6.2.18-1.el9_6 | [RHSA-2025:7438](https://patchblox.com/security/data/fix/linux/rhsa-2025-7438.md) | May 13, 2025 |
| Linux | redis-devel almalinux 8 | 6.2.18-1.module_el8.10.0+3994+c2cc5395 | [ALSA-2025:7686](https://patchblox.com/security/data/fix/linux/alsa-2025-7686.md) | May 15, 2025 |
| Linux | redis-devel almalinux 9 | 6.2.18-1.el9_6 | [ALSA-2025:7438](https://patchblox.com/security/data/fix/linux/alsa-2025-7438.md) | May 13, 2025 |
| Linux | redis-devel ol 8 | 0:6.2.18-1.0.1.module+el8.10.0+90576+0f5e8f7a | [ELSA-2025-7686](https://patchblox.com/security/data/fix/linux/elsa-2025-7686.md) | May 16, 2025 |
| Linux | redis-devel ol 9 | 0:7.2.8-1.module+el9.6.0+90585+92fe29a9 | [ELSA-2025-7429](https://patchblox.com/security/data/fix/linux/elsa-2025-7429.md) | May 21, 2025 |
| Linux | redis-doc RHEL 8 | 0:6.2.18-1.module+el8.10.0+23050+05ea4e95 | [RHSA-2025:7686](https://patchblox.com/security/data/fix/linux/rhsa-2025-7686.md) | May 15, 2025 |
| Linux | redis-doc RHEL 9 | 0:6.2.18-1.el9_6 | [RHSA-2025:7438](https://patchblox.com/security/data/fix/linux/rhsa-2025-7438.md) | May 13, 2025 |
| Linux | redis-doc almalinux 8 | 6.2.18-1.module_el8.10.0+3994+c2cc5395 | [ALSA-2025:7686](https://patchblox.com/security/data/fix/linux/alsa-2025-7686.md) | May 15, 2025 |
| Linux | redis-doc almalinux 9 | 6.2.18-1.el9_6 | [ALSA-2025:7438](https://patchblox.com/security/data/fix/linux/alsa-2025-7438.md) | May 13, 2025 |
| Linux | redis-doc ol 8 | 0:6.2.18-1.0.1.module+el8.10.0+90576+0f5e8f7a | [ELSA-2025-7686](https://patchblox.com/security/data/fix/linux/elsa-2025-7686.md) | May 16, 2025 |
| Linux | redis-doc ol 9 | 0:7.2.8-1.module+el9.6.0+90585+92fe29a9 | [ELSA-2025-7429](https://patchblox.com/security/data/fix/linux/elsa-2025-7429.md) | May 21, 2025 |
| Linux | redis6 amzn 2023 | 6.2.14-2.amzn2023.0.4 | [ALAS2023-2025-950](https://patchblox.com/security/data/fix/linux/alas2023-2025-950.md) | Apr 23, 2025 |
| Linux | redis6-debuginfo amzn 2023 | 6.2.14-2.amzn2023.0.4 | [ALAS2023-2025-950](https://patchblox.com/security/data/fix/linux/alas2023-2025-950.md) | Apr 23, 2025 |
| Linux | redis6-debugsource amzn 2023 | 6.2.14-2.amzn2023.0.4 | [ALAS2023-2025-950](https://patchblox.com/security/data/fix/linux/alas2023-2025-950.md) | Apr 23, 2025 |
| Linux | redis6-devel amzn 2023 | 6.2.14-2.amzn2023.0.4 | [ALAS2023-2025-950](https://patchblox.com/security/data/fix/linux/alas2023-2025-950.md) | Apr 23, 2025 |
| Linux | redis6-doc amzn 2023 | 6.2.14-2.amzn2023.0.4 | [ALAS2023-2025-950](https://patchblox.com/security/data/fix/linux/alas2023-2025-950.md) | Apr 23, 2025 |
| Linux | redis7 opensuse-leap 15.6 | 7.0.8-150600.8.9.1 | [SUSE-SU-2025:1432-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1432-1.md) | May 2, 2025 |
| Linux | redis7 sles 15.6 | 7.0.8-150600.8.9.1 | [SUSE-SU-2025:1432-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1432-1.md) | May 2, 2025 |
| Linux | valkey Debian 13.5 (trixie) | 8.1.1+dfsg1-1 | [DEBIAN-CVE-2025-21605](https://patchblox.com/security/data/fix/linux/debian-cve-2025-21605.md) | Apr 23, 2025 |
| Linux | valkey Debian 14 | 8.1.1+dfsg1-1 | [DEBIAN-CVE-2025-21605](https://patchblox.com/security/data/fix/linux/debian-cve-2025-21605.md) | Apr 23, 2025 |
| Linux | valkey RHEL 10 | 8.0.3-1.el10_0 | [RHSA-2025:7509](https://patchblox.com/security/data/fix/linux/rhsa-2025-7509.md) | Apr 23, 2025 |
| Linux | valkey almalinux 10 | 8.0.3-1.el10_0 | [ALSA-2025:7509](https://patchblox.com/security/data/fix/linux/alsa-2025-7509.md) | May 13, 2025 |
| Linux | valkey amzn 2023 | 8.0.2-3.amzn2023.0.1 | [ALAS2023-2025-949](https://patchblox.com/security/data/fix/linux/alas2023-2025-949.md) | Apr 23, 2025 |
| Linux | valkey ol 10 | 0:8.0.3-1.el10_0 | [ELSA-2025-7509](https://patchblox.com/security/data/fix/linux/elsa-2025-7509.md) | Jun 26, 2025 |
| Linux | valkey opensuse-leap 15.6 | 8.0.2-150600.13.6.1 | [SUSE-SU-2025:1566-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1566-1.md) | May 16, 2025 |
| Linux | valkey rocky 10 | 0:8.0.3-1.el10_0 | [RLSA-2025:7509](https://patchblox.com/security/data/fix/linux/rlsa-2025-7509.md) | Oct 3, 2025 |
| Linux | valkey sles 15.6 | 8.0.2-150600.13.6.1 | [SUSE-SU-2025:1566-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1566-1.md) | May 16, 2025 |
| Linux | valkey sles 15.7 | 8.0.2-150700.3.5.1 | [SUSE-SU-2025:01942-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01942-1.md) | Jun 13, 2025 |
| Linux | valkey-debuginfo amzn 2023 | 8.0.2-3.amzn2023.0.1 | [ALAS2023-2025-949](https://patchblox.com/security/data/fix/linux/alas2023-2025-949.md) | Apr 23, 2025 |
| Linux | valkey-debugsource amzn 2023 | 8.0.2-3.amzn2023.0.1 | [ALAS2023-2025-949](https://patchblox.com/security/data/fix/linux/alas2023-2025-949.md) | Apr 23, 2025 |
| Linux | valkey-devel almalinux 10 | 8.0.3-1.el10_0 | [ALSA-2025:7509](https://patchblox.com/security/data/fix/linux/alsa-2025-7509.md) | May 13, 2025 |
| Linux | valkey-devel amzn 2023 | 8.0.2-3.amzn2023.0.1 | [ALAS2023-2025-949](https://patchblox.com/security/data/fix/linux/alas2023-2025-949.md) | Apr 23, 2025 |
| Linux | valkey-devel ol 10 | 0:8.0.3-1.el10_0 | [ELSA-2025-7509](https://patchblox.com/security/data/fix/linux/elsa-2025-7509.md) | Jun 26, 2025 |
| Linux | valkey-redis-compat Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | [valkey-redis-compat 7.2.11+dfsg1-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-redis-compat-7.2.11-dfsg1-0ubuntu0.2.md) | Oct 3, 2025 |
| Linux | valkey-sentinel Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | [valkey-sentinel 7.2.11+dfsg1-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-sentinel-7.2.11-dfsg1-0ubuntu0.2.md) | Oct 3, 2025 |
| Linux | valkey-server Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | [valkey-server 7.2.11+dfsg1-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-server-7.2.11-dfsg1-0ubuntu0.2.md) | Oct 3, 2025 |
| Linux | valkey-tools Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | [valkey-tools 7.2.11+dfsg1-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-tools-7.2.11-dfsg1-0ubuntu0.2.md) | Oct 3, 2025 |

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