CVE-2026-23479
Fixed in a distro release EPSS 2%CVSS 7.7
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.
Products: Redis, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Hardened Images, Red Hat Enterprise Linux 8
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | valkey | 8.0.9-1.el10_2 |
| AlmaLinux 10 | valkey-devel | 8.0.9-1.el10_2 |
| AlmaLinux 9 | redis | 7.2.14-1.module_el9.8.0+258+b8f945d3 |
| AlmaLinux 9 | redis-devel | 7.2.14-1.module_el9.8.0+258+b8f945d3 |
| AlmaLinux 9 | redis-doc | 7.2.14-1.module_el9.8.0+258+b8f945d3 |
| AlmaLinux 9 | valkey | 8.0.9-1.el9_8 |
| AlmaLinux 9 | valkey-devel | 8.0.9-1.el9_8 |
| Alpine 3.20 | valkey | 7.2.13-r0 |
| Alpine 3.21 | valkey | 7.2.13-r0 |
| Alpine 3.22 | valkey | 8.1.7-r0 |
| Alpine 3.23 | valkey | 9.0.4-r0 |
| Alpine 3.24 | valkey | 9.0.4-r0 |
| Chainguard | py3-redis | 0 |
| Chainguard | py3.10-redis | 0 |
| Chainguard | py3.11-redis | 0 |
| Chainguard | py3.12-redis | 0 |
| Chainguard | py3.13-redis | 0 |
| Chainguard | redis-8.0 | no fix |
| Chainguard | redis-8.4 | 8.4.6-r2 |
| Debian 13 | redis | 5:8.0.2-3+deb13u3 |
| Debian 13 | valkey | no fix |
| Debian 14 | redict | no fix |
| Debian 14 | redis | 5:8.0.6-3 |
| Debian 14 | valkey | 9.1.1-1 |
| Red Hat Enterprise Linux 10.2 | valkey | 0:8.0.9-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | valkey-debuginfo | 0:8.0.9-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | valkey-debugsource | 0:8.0.9-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | valkey-devel | 0:8.0.9-1.el10_2 |
| Red Hat Enterprise Linux 9 | redis | 0:7.2.14-1.module+el9.8.0+24327+41ceb644 |
| Red Hat Enterprise Linux 9 | redis-debuginfo | 0:7.2.14-1.module+el9.8.0+24327+41ceb644 |
| Red Hat Enterprise Linux 9 | redis-debugsource | 0:7.2.14-1.module+el9.8.0+24327+41ceb644 |
| Red Hat Enterprise Linux 9 | redis-devel | 0:7.2.14-1.module+el9.8.0+24327+41ceb644 |
| Red Hat Enterprise Linux 9 | redis-doc | 0:7.2.14-1.module+el9.8.0+24327+41ceb644 |
| Red Hat Enterprise Linux 9 | valkey | 0:8.0.9-1.el9_8 |
| Red Hat Enterprise Linux 9 | valkey-debuginfo | 0:8.0.9-1.el9_8 |
| Red Hat Enterprise Linux 9 | valkey-debugsource | 0:8.0.9-1.el9_8 |
| Red Hat Enterprise Linux 9 | valkey-devel | 0:8.0.9-1.el9_8 |
| Red Hat Enterprise Linux eus 10.0 | valkey | 0:8.0.9-1.el10_0 |
| Red Hat Enterprise Linux eus 10.0 | valkey-debuginfo | 0:8.0.9-1.el10_0 |
| Red Hat Enterprise Linux eus 10.0 | valkey-debugsource | 0:8.0.9-1.el10_0 |
| Red Hat Enterprise Linux eus 10.0 | valkey-devel | 0:8.0.9-1.el10_0 |
| Red Hat hummingbird 1 | boost | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-atomic | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-b2 | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-build | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-charconv | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-chrono | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-cobalt | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-container | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-context | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-contract | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-coroutine | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-date-time | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-devel | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-doc | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-doctools | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-examples | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-fiber | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-filesystem | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-graph | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-graph-mpich | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-graph-openmpi | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-iostreams | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-json | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-locale | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-log | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-math | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-mpich | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-mpich-devel | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-mpich-python3 | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-mpich-python3-devel | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-nowide | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-numpy3 | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-openmpi | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-openmpi-devel | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-openmpi-python3 | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-openmpi-python3-devel | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-process | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-program-options | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-python3 | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-random | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-regex | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-serialization | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-stacktrace | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-static | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-test | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-thread | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-timer | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-type_erasure | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-url | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | boost-wave | 0:1.90.0-7.hum1 |
| Red Hat hummingbird 1 | valkey | 0:9.0.4-0.1.hum1 |
| Red Hat hummingbird 1 | valkey-compat-redis | 0:9.0.4-0.1.hum1 |
| Red Hat hummingbird 1 | valkey-compat-redis-devel | 0:9.0.4-0.1.hum1 |
| Red Hat hummingbird 1 | valkey-devel | 0:9.0.4-0.1.hum1 |
| Red Hat hummingbird 1 | valkey-doc | 0:9.0.4-0.1.hum1 |
| Red Hat hummingbird 1 | valkey-rdma | 0:9.0.4-0.1.hum1 |
| Red Hat rhel eus 9.6 | redis | 0:7.2.14-1.module+el9.6.0+24344+1bc33ec7 |
| Red Hat rhel eus 9.6 | redis-debuginfo | 0:7.2.14-1.module+el9.6.0+24344+1bc33ec7 |
| Red Hat rhel eus 9.6 | redis-debugsource | 0:7.2.14-1.module+el9.6.0+24344+1bc33ec7 |
| Red Hat rhel eus 9.6 | redis-devel | 0:7.2.14-1.module+el9.6.0+24344+1bc33ec7 |
| Red Hat rhel eus 9.6 | redis-doc | 0:7.2.14-1.module+el9.6.0+24344+1bc33ec7 |
| Rocky Linux 10 | valkey | 0:8.0.9-1.el10_2 |
| Rocky Linux 9 | redis | 0:7.2.14-1.module+el9.8.0+40207+e2014501 |
| Rocky Linux 9 | valkey | 0:8.0.9-1.el9_8 |
| Ubuntu 24.04 LTS | redis | no fix |
| Ubuntu 25.10 | redis | no fix |
| Ubuntu 26.04 LTS | redis | no fix |
| Ubuntu 26.10 | redis | no fix |
| Ubuntu Pro 14.04 LTS | redis | no fix |
| Ubuntu Pro 16.04 LTS | redis | no fix |
| Ubuntu Pro 18.04 LTS | redis | no fix |
| Ubuntu Pro 20.04 LTS | redis | no fix |
| Ubuntu Pro 22.04 LTS | redis | no fix |
| openSUSE Leap 16.0 | redis | 8.10.1-bp160.1.1 |
| openSUSE Leap 16.0 | redis-modules | 8.10.1-bp160.1.1 |
| openSUSE Tumbleweed | redis | 8.6.3-1.1 |
| openSUSE Tumbleweed | valkey | 9.0.4-1.1 |