CVE-2025-49844
Redis Lua Use-After-Free may lead to remote code execution
CVE-2025-49844 is fixed in 26 products on 1 platform, first by liblua5.1-0 5.1.5-8.1ubuntu0.20.04.1~esm1, released October 3, 2025. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.9
Critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.8264
99th percentile
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| liblua5.1-0 · Ubuntu 20.04 LTS (focal) | 5.1.5-8.1ubuntu0.20.04.1~esm1 | liblua5.1-0 5.1.5-8.1ubuntu0.20.04.1~esm1 | Oct 3, 2025 |
| liblua5.1-0 · Ubuntu 22.04.1 LTS (jammy) | 5.1.5-8.1ubuntu0.22.04.1~esm1 | liblua5.1-0 5.1.5-8.1ubuntu0.22.04.1~esm1 | Oct 3, 2025 |
| lua5.1 · Ubuntu 20.04 LTS (focal) | 5.1.5-8.1ubuntu0.20.04.1~esm1 | lua5.1 5.1.5-8.1ubuntu0.20.04.1~esm1 | Oct 3, 2025 |
| lua5.1 · Ubuntu 22.04.1 LTS (jammy) | 5.1.5-8.1ubuntu0.22.04.1~esm1 | lua5.1 5.1.5-8.1ubuntu0.22.04.1~esm1 | Oct 3, 2025 |
| redict · Debian 14 | 7.3.6+ds-1 | DEBIAN-CVE-2025-49844 | Oct 3, 2025 |
| redict · Ubuntu 25.04 (plucky) | 7.3.2+ds-1ubuntu0.1 | redict 7.3.2+ds-1ubuntu0.1 | Jan 16, 2026 |
| redict · Ubuntu 25.10 (questing) | 7.3.5+ds-1ubuntu0.1 | redict 7.3.5+ds-1ubuntu0.1 | Oct 3, 2025 |
| redict-sentinel · Ubuntu 25.04 (plucky) | 7.3.2+ds-1ubuntu0.1 | redict-sentinel 7.3.2+ds-1ubuntu0.1 | Jan 16, 2026 |
| redict-sentinel · Ubuntu 25.10 (questing) | 7.3.5+ds-1ubuntu0.1 | redict-sentinel 7.3.5+ds-1ubuntu0.1 | Oct 3, 2025 |
| redict-server · Ubuntu 25.04 (plucky) | 7.3.2+ds-1ubuntu0.1 | redict-server 7.3.2+ds-1ubuntu0.1 | Jan 16, 2026 |
| redict-server · Ubuntu 25.10 (questing) | 7.3.5+ds-1ubuntu0.1 | redict-server 7.3.5+ds-1ubuntu0.1 | Oct 3, 2025 |
| redict-tools · Ubuntu 25.04 (plucky) | 7.3.2+ds-1ubuntu0.1 | redict-tools 7.3.2+ds-1ubuntu0.1 | Jan 16, 2026 |
| redict-tools · Ubuntu 25.10 (questing) | 7.3.5+ds-1ubuntu0.1 | redict-tools 7.3.5+ds-1ubuntu0.1 | Oct 3, 2025 |
| redis · Debian 12.15 (bookworm) | 5:7.0.15-1~deb12u6 | DEBIAN-CVE-2025-49844 | Oct 3, 2025 |
| redis · Debian 13.5 (trixie) | 5:8.0.2-3+deb13u1 | DEBIAN-CVE-2025-49844 | Oct 3, 2025 |
| redis · Debian 14 | 5:8.0.4-1 | DEBIAN-CVE-2025-49844 | Oct 3, 2025 |
| redis · RHEL 8 | 0:6.2.20-1.module+el8.10.0+23551+d4cd15d7 | RHSA-2025:19238 | Oct 29, 2025 |
| redis · RHEL 9 | 0:7.2.11-1.module+el9.7.0+23559+d075163a | RHSA-2025:20955 | Nov 11, 2025 |
| redis · Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm6 | redis 5:4.0.9-1ubuntu0.2+esm6 | Oct 3, 2025 |
| redis · Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm4 | redis 5:5.0.7-2ubuntu0.1+esm4 | Oct 3, 2025 |
| redis · Ubuntu 24.04.5 LTS (noble) | 5:7.0.15-1ubuntu0.24.04.2 | redis 5:7.0.15-1ubuntu0.24.04.2 | Oct 3, 2025 |
| redis · Ubuntu 25.04 (plucky) | 5:7.0.15-3ubuntu0.1 | redis 5:7.0.15-3ubuntu0.1 | Jan 16, 2026 |
| redis · Ubuntu 25.10 (questing) | 5:8.0.2-3ubuntu0.25.10.1 | redis 5:8.0.2-3ubuntu0.25.10.1 | Oct 3, 2025 |
| redis · almalinux 8 | 6.2.20-1.module_el8.10.0+4056+739731b0 | ALSA-2025:19238 | Oct 29, 2025 |
| redis · almalinux 9 | 7.2.11-1.module_el9.6.0+188+92104ce8 | ALSA-2025:20955 | Nov 11, 2025 |
| redis · ol 8 | 0:6.2.19-1.0.2.module+el8.10.0+90680+2298f620 | ELSA-2025-20656 | Oct 8, 2025 |
| redis · ol 9 | 0:7.2.10-1.0.2.module+el9.6.0+90681+1a77fe5a | ELSA-2025-20654 | Oct 8, 2025 |
| redis · opensuse-leap 15.6 | 7.2.4-150600.3.18.1 | SUSE-SU-2025:03505-1 | Oct 9, 2025 |
| redis · opensuse-leap 16.0 | 8.2.3-bp160.1.1 | OPENSUSE-SU-2025:20121-1 | Dec 30, 2025 |
| redis · rocky 8 | 0:6.2.20-1.module+el8.10.0+2081+450a296c | RLSA-2025:19238 | Nov 29, 2025 |
| redis · rocky 9 | 0:7.2.11-1.module+el9.7.0+40013+17379f63 | RLSA-2025:20955 | Nov 29, 2025 |
| redis · sles 15.6 | 7.2.4-150600.3.18.1 | SUSE-SU-2025:03505-1 | Oct 9, 2025 |
| redis-devel · RHEL 8 | 0:6.2.20-1.module+el8.10.0+23551+d4cd15d7 | RHSA-2025:19238 | Oct 29, 2025 |
| redis-devel · RHEL 9 | 0:7.2.11-1.module+el9.7.0+23559+d075163a | RHSA-2025:20955 | Nov 11, 2025 |
| redis-devel · almalinux 8 | 6.2.20-1.module_el8.10.0+4056+739731b0 | ALSA-2025:19238 | Oct 29, 2025 |
| redis-devel · almalinux 9 | 7.2.11-1.module_el9.6.0+188+92104ce8 | ALSA-2025:20955 | Nov 11, 2025 |
| redis-devel · ol 8 | 0:6.2.19-1.0.2.module+el8.10.0+90680+2298f620 | ELSA-2025-20656 | Oct 8, 2025 |
| redis-devel · ol 9 | 0:7.2.10-1.0.2.module+el9.6.0+90681+1a77fe5a | ELSA-2025-20654 | Oct 8, 2025 |
| redis-doc · RHEL 8 | 0:6.2.20-1.module+el8.10.0+23551+d4cd15d7 | RHSA-2025:19238 | Oct 29, 2025 |
| redis-doc · RHEL 9 | 0:7.2.11-1.module+el9.7.0+23559+d075163a | RHSA-2025:20955 | Nov 11, 2025 |
| redis-doc · almalinux 8 | 6.2.20-1.module_el8.10.0+4056+739731b0 | ALSA-2025:19238 | Oct 29, 2025 |
| redis-doc · almalinux 9 | 7.2.11-1.module_el9.6.0+188+92104ce8 | ALSA-2025:20955 | Nov 11, 2025 |
| redis-doc · ol 8 | 0:6.2.19-1.0.2.module+el8.10.0+90680+2298f620 | ELSA-2025-20656 | Oct 8, 2025 |
| redis-doc · ol 9 | 0:7.2.10-1.0.2.module+el9.6.0+90681+1a77fe5a | ELSA-2025-20654 | Oct 8, 2025 |
| redis-sentinel · Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm6 | redis-sentinel 5:4.0.9-1ubuntu0.2+esm6 | Oct 3, 2025 |
| redis-sentinel · Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm4 | redis-sentinel 5:5.0.7-2ubuntu0.1+esm4 | Oct 3, 2025 |
| redis-sentinel · Ubuntu 24.04.5 LTS (noble) | 5:7.0.15-1ubuntu0.24.04.2 | redis-sentinel 5:7.0.15-1ubuntu0.24.04.2 | Oct 3, 2025 |
| redis-sentinel · Ubuntu 25.04 (plucky) | 5:7.0.15-3ubuntu0.1 | redis-sentinel 5:7.0.15-3ubuntu0.1 | Jan 16, 2026 |
| redis-sentinel · Ubuntu 25.10 (questing) | 5:8.0.2-3ubuntu0.25.10.1 | redis-sentinel 5:8.0.2-3ubuntu0.25.10.1 | Oct 3, 2025 |
| redis-server · Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm6 | redis-server 5:4.0.9-1ubuntu0.2+esm6 | Oct 3, 2025 |
| redis-server · Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm4 | redis-server 5:5.0.7-2ubuntu0.1+esm4 | Oct 3, 2025 |
| redis-server · Ubuntu 24.04.5 LTS (noble) | 5:7.0.15-1ubuntu0.24.04.2 | redis-server 5:7.0.15-1ubuntu0.24.04.2 | Oct 3, 2025 |
| redis-server · Ubuntu 25.04 (plucky) | 5:7.0.15-3ubuntu0.1 | redis-server 5:7.0.15-3ubuntu0.1 | Jan 16, 2026 |
| redis-server · Ubuntu 25.10 (questing) | 5:8.0.2-3ubuntu0.25.10.1 | redis-server 5:8.0.2-3ubuntu0.25.10.1 | Oct 3, 2025 |
| redis-tools · Ubuntu 18.04.6 LTS (bionic) | 5:4.0.9-1ubuntu0.2+esm6 | redis-tools 5:4.0.9-1ubuntu0.2+esm6 | Oct 3, 2025 |
| redis-tools · Ubuntu 20.04 LTS (focal) | 5:5.0.7-2ubuntu0.1+esm4 | redis-tools 5:5.0.7-2ubuntu0.1+esm4 | Oct 3, 2025 |
| redis-tools · Ubuntu 24.04.5 LTS (noble) | 5:7.0.15-1ubuntu0.24.04.2 | redis-tools 5:7.0.15-1ubuntu0.24.04.2 | Oct 3, 2025 |
| redis-tools · Ubuntu 25.04 (plucky) | 5:7.0.15-3ubuntu0.1 | redis-tools 5:7.0.15-3ubuntu0.1 | Jan 16, 2026 |
| redis-tools · Ubuntu 25.10 (questing) | 5:8.0.2-3ubuntu0.25.10.1 | redis-tools 5:8.0.2-3ubuntu0.25.10.1 | Oct 3, 2025 |
| redis6 · amzn 2023 | 6.2.20-2.amzn2023.0.1 | ALAS2023-2025-1222 | Oct 14, 2025 |
| redis6-debuginfo · amzn 2023 | 6.2.20-2.amzn2023.0.1 | ALAS2023-2025-1222 | Oct 14, 2025 |
| redis6-debugsource · amzn 2023 | 6.2.20-2.amzn2023.0.1 | ALAS2023-2025-1222 | Oct 14, 2025 |
| redis6-devel · amzn 2023 | 6.2.20-2.amzn2023.0.1 | ALAS2023-2025-1222 | Oct 14, 2025 |
| redis6-doc · amzn 2023 | 6.2.20-2.amzn2023.0.1 | ALAS2023-2025-1222 | Oct 14, 2025 |
| redis7 · opensuse-leap 15.6 | 7.0.8-150600.8.19.1 | SUSE-SU-2025:03500-1 | Oct 8, 2025 |
| redis7 · sles 15.6 | 7.0.8-150600.8.19.1 | SUSE-SU-2025:03500-1 | Oct 8, 2025 |
| valkey · Debian 13.5 (trixie) | 8.1.1+dfsg1-3+deb13u1 | DEBIAN-CVE-2025-49844 | Oct 3, 2025 |
| valkey · Debian 14 | 8.1.4+dfsg1-1 | DEBIAN-CVE-2025-49844 | Oct 3, 2025 |
| valkey · RHEL 10 | 8.0.6-2.el10_1 | RHSA-2025:21936 | Oct 3, 2025 |
| valkey · RHEL 9 | 0:8.0.6-2.el9_7 | RHSA-2025:21916 | Nov 24, 2025 |
| valkey · almalinux 10 | 8.0.6-2.el10_1 | ALSA-2025:21936 | Nov 24, 2025 |
| valkey · almalinux 9 | 8.0.6-2.el9_7 | ALSA-2025:21916 | Nov 24, 2025 |
| valkey · amzn 2023 | 8.0.6-3.amzn2023.0.2 | ALAS2023-2025-1221 | Oct 14, 2025 |
| valkey · ol 10 | 0:8.0.4-1.0.1.el10_0 | ELSA-2025-20653 | Oct 8, 2025 |
| valkey · ol 9 | 0:8.0.6-2.el9_7 | ELSA-2025-21916 | Nov 25, 2025 |
| valkey · opensuse-leap 15.6 | 8.0.6-150600.13.17.1 | SUSE-SU-2025:03499-1 | Oct 8, 2025 |
| valkey · opensuse-leap 16.0 | 8.0.6-160000.1.1 | OPENSUSE-SU-2026:20003-1 | Jan 7, 2026 |
| valkey · rocky 10 | 0:8.0.6-2.el10_1 | RLSA-2025:21936 | Nov 25, 2025 |
| valkey · rocky 9 | 0:8.0.6-2.el9_7 | RLSA-2025:21916 | Nov 25, 2025 |
| valkey · sles 15.6 | 8.0.6-150600.13.17.1 | SUSE-SU-2025:03499-1 | Oct 8, 2025 |
| valkey · sles 15.7 | 8.0.6-150700.3.11.1 | SUSE-SU-2025:03502-1 | Oct 8, 2025 |
| valkey · sles 16.0 | 8.0.6-160000.1.1 | SUSE-SU-2026:20022-1 | Jan 7, 2026 |
| valkey-debuginfo · amzn 2023 | 8.0.6-3.amzn2023.0.2 | ALAS2023-2025-1221 | Oct 14, 2025 |
| valkey-debugsource · amzn 2023 | 8.0.6-3.amzn2023.0.2 | ALAS2023-2025-1221 | Oct 14, 2025 |
| valkey-devel · RHEL 9 | 0:8.0.6-2.el9_7 | RHSA-2025:21916 | Nov 24, 2025 |
| valkey-devel · almalinux 10 | 8.0.6-2.el10_1 | ALSA-2025:21936 | Nov 24, 2025 |
| valkey-devel · almalinux 9 | 8.0.6-2.el9_7 | ALSA-2025:21916 | Nov 24, 2025 |
| valkey-devel · amzn 2023 | 8.0.6-3.amzn2023.0.2 | ALAS2023-2025-1221 | Oct 14, 2025 |
| valkey-devel · ol 10 | 0:8.0.4-1.0.1.el10_0 | ELSA-2025-20653 | Oct 8, 2025 |
| valkey-devel · ol 9 | 0:8.0.6-2.el9_7 | ELSA-2025-21916 | Nov 25, 2025 |
| valkey-redis-compat · Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | valkey-redis-compat 7.2.11+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
| valkey-redis-compat · Ubuntu 25.04 (plucky) | 8.0.6+dfsg1-0ubuntu0.2 | valkey-redis-compat 8.0.6+dfsg1-0ubuntu0.2 | Jan 16, 2026 |
| valkey-sentinel · Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | valkey-sentinel 7.2.11+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
| valkey-sentinel · Ubuntu 25.04 (plucky) | 8.0.6+dfsg1-0ubuntu0.2 | valkey-sentinel 8.0.6+dfsg1-0ubuntu0.2 | Jan 16, 2026 |
| valkey-sentinel · Ubuntu 25.10 (questing) | 8.1.4+dfsg1-0ubuntu0.2 | valkey-sentinel 8.1.4+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
| valkey-server · Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | valkey-server 7.2.11+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
| valkey-server · Ubuntu 25.04 (plucky) | 8.0.6+dfsg1-0ubuntu0.2 | valkey-server 8.0.6+dfsg1-0ubuntu0.2 | Jan 16, 2026 |
| valkey-server · Ubuntu 25.10 (questing) | 8.1.4+dfsg1-0ubuntu0.2 | valkey-server 8.1.4+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
| valkey-tools · Ubuntu 24.04.5 LTS (noble) | 7.2.11+dfsg1-0ubuntu0.2 | valkey-tools 7.2.11+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
| valkey-tools · Ubuntu 25.04 (plucky) | 8.0.6+dfsg1-0ubuntu0.2 | valkey-tools 8.0.6+dfsg1-0ubuntu0.2 | Jan 16, 2026 |
| valkey-tools · Ubuntu 25.10 (questing) | 8.1.4+dfsg1-0ubuntu0.2 | valkey-tools 8.1.4+dfsg1-0ubuntu0.2 | Oct 3, 2025 |
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