Description
Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| redis | redis | >= 7.2.0, < 8.6.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | redis | 5:8.0.6-3 | — |
| Debian 14 | valkey | 9.1.1-1 | — |
| Debian 13 | redis | 5:8.0.2-3+deb13u3 | — |
| Debian 13 | valkey | 8.1.1+dfsg1-3+deb13u3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | redis | No fix yet | — |
| Ubuntu 26.04 LTS | redis | No fix yet | — |
| Ubuntu 25.10 | redis | No fix yet | — |
| Ubuntu 24.04 LTS | redis | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 18.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 16.04 LTS | redis | No fix yet | — |
| Ubuntu Pro 14.04 LTS | redis | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | valkey +1 | 8.0.9-1.el10_2 | RHSA-2026:25216 |
| RHEL 9 | redis +2 | 7.2.14-1.module+el9.8.0+24327+41ceb644 | RHSA-2026:25219 |
| RHEL 9 | valkey +1 | 8.0.9-1.el9_8 | RHSA-2026:25925 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | valkey +1 | 8.0.9-1.el10_0 | RHSA-2026:26540 |
| RHEL 9.6 EUS | redis +2 | 7.2.14-1.module+el9.6.0+24344+1bc33ec7 | RHSA-2026:26306 |
| Red Hat Hardened Images 1 | boost +49 | 1.90.0-7.hum1 | RHSA-2026:7662 |
| Red Hat Hardened Images 1 | valkey +5 | 9.0.4-0.1.hum1 | RHSA-2026:14316 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | valkey +1 | 8.0.9-1.el10_2 | ALSA-2026:25216 |
| AlmaLinux 9 | redis +2 | 7.2.14-1.module_el9.8.0+258+b8f945d3 | ALSA-2026:25219 |
| AlmaLinux 9 | valkey +1 | 8.0.9-1.el9_8 | ALSA-2026:25925 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | valkey | 8.0.9-1.el10_2 | RLSA-2026:25216 |
| Rocky Linux 9 | redis | 7.2.14-1.module+el9.8.0+40207+e2014501 | RLSA-2026:25219 |
| Rocky Linux 9 | valkey | 8.0.9-1.el9_8 | RLSA-2026:25925 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | redis | 8.6.3-1.1 | openSUSE-SU-2026:10711-1 |
| openSUSE Tumbleweed | valkey | 9.0.4-1.1 | openSUSE-SU-2026:10719-1 |
| openSUSE Leap 16.0 | redis +1 | 8.10.1-bp160.1.1 | openSUSE-SU-2026:21612-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | valkey | 9.0.4-r0 | — |
| Alpine v3.23 | valkey | 9.0.4-r0 | — |
| Alpine v3.22 | valkey | 8.1.7-r0 | — |
| Alpine v3.21 | valkey | 7.2.13-r0 | — |
| Alpine v3.20 | valkey | 7.2.13-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | valkey +1 | 9.0.4-1.amzn2023.0.1 | ALAS2023-2026-1748 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | valkey | 8.0.9-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | valkey +1 | 8.0.9-1.el10_2 | ELSA-2026-25216 |
| Oracle Linux 9 | redis +2 | 7.2.14-1.0.1.module+el9.8.0+90920+b17784e3 | ELSA-2026-25219 |
| Oracle Linux 9 | valkey +1 | 8.0.9-1.el9_8 | ELSA-2026-25925 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 4 repositories
-
HackSpeak/CVE-2026-23479 ★ 1 · Aug 19, 2026
Redis CVE-2026-23479 UAF RCE vulnerability checker mirror — pduggusa, MIT; for authorized security testing
-
rizlmaulanaa/CVE-2026-23479-Redis-UAF-Proof-of-Concept ★ 0 · Aug 4, 2026
Proof of concept with GDB‑assisted exploitation (educational / lab use only)
-
v1c0mmrt/redis-cve-2026-23479-scanner ★ 0 · Jun 11, 2026
CVE-2026-23479 Redis Use-After-Free vulnerability detection tool
-
pduggusa/redis-cve-2026-23479-check ★ 0 · Jun 4, 2026
Safe read-only version checker + Sigma rule for Redis CVE-2026-23479 (authenticated use-after-free -> RCE). By DugganUSA.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 21
- RHSA-2026:25925 Red Hat Security Advisory: valkey security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALSA-2026:25925 Important: valkey security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:25219 Important: redis:7 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:25216 Important: valkey security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-1370 Redis: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode BSI CERT-Bund (WID) · Oct 26, 2026
- RHSA-2026:26540 Red Hat Security Advisory: valkey security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:26306 Red Hat Security Advisory: redis:7 security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:25219 Red Hat Security Advisory: redis:7 security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:25216 Red Hat Security Advisory: valkey security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:14316 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:7662 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- openSUSE-SU-2026:21612-1 Security update for redis SUSE / openSUSE Security Updates · Aug 23, 2026
- ELSA-2026-25216 Important: valkey security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 16, 2026
- ELSA-2026-25925 Important: valkey security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 24, 2026
- ELSA-2026-25219 Important: redis:7 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 23, 2026
- RLSA-2026:25925 Important: valkey security update Rocky Linux Security Advisories · Jun 17, 2026
- RLSA-2026:25216 Important: valkey security update Rocky Linux Security Advisories · Jun 13, 2026
- RLSA-2026:25219 Important: redis:7 security update Rocky Linux Security Advisories · Jun 13, 2026
- ALAS2023-2026-1748 Important: valkey security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 26, 2026
- openSUSE-SU-2026:10719-1 valkey-9.0.4-1.1 on GA media SUSE / openSUSE Security Updates · May 8, 2026
- openSUSE-SU-2026:10711-1 redis-8.6.3-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2026