Valkey: TLS pending-data processing use-after-free may allow remote code execution
CVE-2026-56684 is fixed in 8 products on 1 platform, first by OPENSUSE-SU-2026:21485-1, released July 30, 2026. It is not reported as exploited. Patch Radar priority: High.
Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| valkey · Debian 13.5 (trixie) | 8.1.1+dfsg1-3+deb13u3 | DEBIAN-CVE-2026-56684 | Sep 1, 2026 |
| valkey · Debian 14 | 9.1.1-1 | DEBIAN-CVE-2026-56684 | Sep 1, 2026 |
| valkey · RHEL 10 | 8.0.11-1.el10_0 | RHSA-2026:68601 | Sep 10, 2026 |
| valkey · RHEL 9 | 0:8.0.10-1.el9_8 | RHSA-2026:64807 | Sep 13, 2026 |
| valkey · almalinux 10 | 8.0.11-1.el10_2 | ALSA-2026:64796 | Sep 8, 2026 |
| valkey · almalinux 9 | 8.0.10-1.el9_8 | ALSA-2026:64807 | Sep 8, 2026 |
| valkey · amzn 2023 | 9.0.5-1.amzn2023.0.1 | ALAS2023-2026-2011 | Aug 3, 2026 |
| valkey · ol 10 | 0:8.0.11-1.el10_2 | ELSA-2026-64796-0 | Sep 8, 2026 |
| valkey · ol 9 | 0:8.0.10-1.el9_8 | ELSA-2026-64807-0 | Sep 8, 2026 |
| valkey · opensuse-leap 16.0 | 8.0.10-160000.1.1 | OPENSUSE-SU-2026:21485-1 | Jul 30, 2026 |
| valkey · rocky 10 | 0:8.0.11-1.el10_2 | RLSA-2026:64796 | Sep 9, 2026 |
| valkey · rocky 9 | 0:8.0.10-1.el9_8 | RLSA-2026:64807 | Sep 9, 2026 |
| valkey · sles 15.6 | 8.0.10-150600.13.28.1 | SUSE-SU-2026:3483-1 | Aug 4, 2026 |
| valkey · sles 15.7 | 8.0.10-150700.3.20.1 | SUSE-SU-2026:3427-1 | Jul 30, 2026 |
| valkey-debuginfo · amzn 2023 | 9.0.5-1.amzn2023.0.1 | ALAS2023-2026-2011 | Aug 3, 2026 |
| valkey-debugsource · amzn 2023 | 9.0.5-1.amzn2023.0.1 | ALAS2023-2026-2011 | Aug 3, 2026 |
| valkey-devel · RHEL 9 | 0:8.0.10-1.el9_8 | RHSA-2026:64807 | Sep 13, 2026 |
| valkey-devel · almalinux 10 | 8.0.11-1.el10_2 | ALSA-2026:64796 | Sep 8, 2026 |
| valkey-devel · almalinux 9 | 8.0.10-1.el9_8 | ALSA-2026:64807 | Sep 8, 2026 |
| valkey-devel · amzn 2023 | 9.0.5-1.amzn2023.0.1 | ALAS2023-2026-2011 | Aug 3, 2026 |
| valkey-devel · ol 10 | 0:8.0.11-1.el10_2 | ELSA-2026-64796-0 | Sep 8, 2026 |
| valkey-devel · ol 9 | 0:8.0.10-1.el9_8 | ELSA-2026-64807-0 | Sep 8, 2026 |
| valkey-redis-compat · Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | valkey-redis-compat 7.2.13+dfsg1-0ubuntu0.1+esm1 | Aug 18, 2026 |
| valkey-sentinel · Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | valkey-sentinel 7.2.13+dfsg1-0ubuntu0.1+esm1 | Aug 18, 2026 |
| valkey-sentinel · Ubuntu 26.04.1 LTS (resolute) | 9.0.4-0ubuntu0.2 | valkey-sentinel 9.0.4-0ubuntu0.2 | Sep 4, 2026 |
| valkey-server · Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | valkey-server 7.2.13+dfsg1-0ubuntu0.1+esm1 | Aug 18, 2026 |
| valkey-server · Ubuntu 26.04.1 LTS (resolute) | 9.0.4-0ubuntu0.2 | valkey-server 9.0.4-0ubuntu0.2 | Sep 4, 2026 |
| valkey-tools · Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | valkey-tools 7.2.13+dfsg1-0ubuntu0.1+esm1 | Aug 18, 2026 |
| valkey-tools · Ubuntu 26.04.1 LTS (resolute) | 9.0.4-0ubuntu0.2 | valkey-tools 9.0.4-0ubuntu0.2 | Sep 4, 2026 |
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