# CVE-2026-63639: Valkey: UAF in stream deserialization may lead to remote code execution CVE-2026-63639 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. - Web page: https://patchblox.com/security/cve/CVE-2026-63639 - Priority: High - CVSS: 8.8 (Important) - EPSS: 0.0089 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 30, 2026 - Weakness: Use After Free - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63639 ## Description 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 RESTORE command accepts a malformed RDB stream payload that assigns one Pending Entry List NACK to multiple consumers during stream consumer-group deserialization, causing a use-after-free when one consumer is deleted while another still references the shared NACK and potentially allowing remote code execution. 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 | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | valkey Debian 13.5 (trixie) | 8.1.1+dfsg1-3+deb13u3 | [DEBIAN-CVE-2026-63639](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63639.md) | Sep 1, 2026 | | Linux | valkey Debian 14 | 9.1.1-1 | [DEBIAN-CVE-2026-63639](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63639.md) | Sep 1, 2026 | | Linux | valkey RHEL 10 | 8.0.11-1.el10_0 | [RHSA-2026:68601](https://patchblox.com/security/data/fix/linux/rhsa-2026-68601.md) | Sep 10, 2026 | | Linux | valkey RHEL 9 | 0:8.0.10-1.el9_8 | [RHSA-2026:64807](https://patchblox.com/security/data/fix/linux/rhsa-2026-64807.md) | Sep 13, 2026 | | Linux | valkey almalinux 10 | 8.0.11-1.el10_2 | [ALSA-2026:64796](https://patchblox.com/security/data/fix/linux/alsa-2026-64796.md) | Sep 8, 2026 | | Linux | valkey almalinux 9 | 8.0.10-1.el9_8 | [ALSA-2026:64807](https://patchblox.com/security/data/fix/linux/alsa-2026-64807.md) | Sep 8, 2026 | | Linux | valkey amzn 2023 | 9.0.5-1.amzn2023.0.1 | [ALAS2023-2026-2011](https://patchblox.com/security/data/fix/linux/alas2023-2026-2011.md) | Aug 3, 2026 | | Linux | valkey ol 10 | 0:8.0.11-1.el10_2 | [ELSA-2026-64796-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64796-0.md) | Sep 8, 2026 | | Linux | valkey ol 9 | 0:8.0.10-1.el9_8 | [ELSA-2026-64807-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64807-0.md) | Sep 8, 2026 | | Linux | valkey opensuse-leap 16.0 | 8.0.10-160000.1.1 | [OPENSUSE-SU-2026:21485-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21485-1.md) | Jul 30, 2026 | | Linux | valkey rocky 10 | 0:8.0.11-1.el10_2 | [RLSA-2026:64796](https://patchblox.com/security/data/fix/linux/rlsa-2026-64796.md) | Sep 9, 2026 | | Linux | valkey rocky 9 | 0:8.0.10-1.el9_8 | [RLSA-2026:64807](https://patchblox.com/security/data/fix/linux/rlsa-2026-64807.md) | Sep 9, 2026 | | Linux | valkey sles 15.6 | 8.0.10-150600.13.28.1 | [SUSE-SU-2026:3483-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3483-1.md) | Aug 4, 2026 | | Linux | valkey sles 15.7 | 8.0.10-150700.3.20.1 | [SUSE-SU-2026:3427-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3427-1.md) | Jul 30, 2026 | | Linux | valkey-debuginfo amzn 2023 | 9.0.5-1.amzn2023.0.1 | [ALAS2023-2026-2011](https://patchblox.com/security/data/fix/linux/alas2023-2026-2011.md) | Aug 3, 2026 | | Linux | valkey-debugsource amzn 2023 | 9.0.5-1.amzn2023.0.1 | [ALAS2023-2026-2011](https://patchblox.com/security/data/fix/linux/alas2023-2026-2011.md) | Aug 3, 2026 | | Linux | valkey-devel RHEL 9 | 0:8.0.10-1.el9_8 | [RHSA-2026:64807](https://patchblox.com/security/data/fix/linux/rhsa-2026-64807.md) | Sep 13, 2026 | | Linux | valkey-devel almalinux 10 | 8.0.11-1.el10_2 | [ALSA-2026:64796](https://patchblox.com/security/data/fix/linux/alsa-2026-64796.md) | Sep 8, 2026 | | Linux | valkey-devel almalinux 9 | 8.0.10-1.el9_8 | [ALSA-2026:64807](https://patchblox.com/security/data/fix/linux/alsa-2026-64807.md) | Sep 8, 2026 | | Linux | valkey-devel amzn 2023 | 9.0.5-1.amzn2023.0.1 | [ALAS2023-2026-2011](https://patchblox.com/security/data/fix/linux/alas2023-2026-2011.md) | Aug 3, 2026 | | Linux | valkey-devel ol 10 | 0:8.0.11-1.el10_2 | [ELSA-2026-64796-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64796-0.md) | Sep 8, 2026 | | Linux | valkey-devel ol 9 | 0:8.0.10-1.el9_8 | [ELSA-2026-64807-0](https://patchblox.com/security/data/fix/linux/elsa-2026-64807-0.md) | Sep 8, 2026 | | Linux | 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](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-redis-compat-7.2.13-dfsg1-0ubuntu0.1-esm1.md) | Aug 18, 2026 | | Linux | valkey-sentinel Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | [valkey-sentinel 7.2.13+dfsg1-0ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-sentinel-7.2.13-dfsg1-0ubuntu0.1-esm1.md) | Aug 18, 2026 | | Linux | valkey-sentinel Ubuntu 26.04.1 LTS (resolute) | 9.0.4-0ubuntu0.2 | [valkey-sentinel 9.0.4-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-valkey-sentinel-9.0.4-0ubuntu0.2.md) | Sep 4, 2026 | | Linux | valkey-server Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | [valkey-server 7.2.13+dfsg1-0ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-server-7.2.13-dfsg1-0ubuntu0.1-esm1.md) | Aug 18, 2026 | | Linux | valkey-server Ubuntu 26.04.1 LTS (resolute) | 9.0.4-0ubuntu0.2 | [valkey-server 9.0.4-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-valkey-server-9.0.4-0ubuntu0.2.md) | Sep 4, 2026 | | Linux | valkey-tools Ubuntu 24.04.5 LTS (noble) | 7.2.13+dfsg1-0ubuntu0.1+esm1 | [valkey-tools 7.2.13+dfsg1-0ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-valkey-tools-7.2.13-dfsg1-0ubuntu0.1-esm1.md) | Aug 18, 2026 | | Linux | valkey-tools Ubuntu 26.04.1 LTS (resolute) | 9.0.4-0ubuntu0.2 | [valkey-tools 9.0.4-0ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-valkey-tools-9.0.4-0ubuntu0.2.md) | Sep 4, 2026 | --- Data as of 2026-11-10T01:44:33Z UTC. 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