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Ubuntu 25.10: Critical Remote Code Execution Vulnerability USN-7824-1

ubuntu
Calendar Grey October 16, 2025
Dist Ubuntu Esm H88
Redis may crash or run unintended programs due to crafted traffic, posing a threat to user security. Update advised.
Redis could be made to crash or run programs if it received specially crafted network traffic from an authenticated user.

Summary

Redis could be made to crash or run programs if it received specially

crafted network traffic from an authenticated user.

Software Description:

- redis: Persistent key-value database with network interface

Details:

Benny Isaacs, Nir Brakha, and Sagi Tzadik discovered that Redis incorrectly

handled memory when running Lua scripts. An authenticated attacker could

use this vulnerability to trigger a use-after-free condition, and

potentially achieve remote code execution on the Redis server.

Topics%20covered

Topics Covered

security advisory remote code execution Ubuntu important network attack redis

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  redis                           5:8.0.2-3ubuntu0.25.10.1
  redis-sentinel                  5:8.0.2-3ubuntu0.25.10.1
  redis-server                    5:8.0.2-3ubuntu0.25.10.1
  redis-tools                     5:8.0.2-3ubuntu0.25.10.1

Ubuntu 25.04
  redis                           5:7.0.15-3ubuntu0.1
  redis-sentinel                  5:7.0.15-3ubuntu0.1
  redis-server                    5:7.0.15-3ubuntu0.1
  redis-tools                     5:7.0.15-3ubuntu0.1

Ubuntu 24.04 LTS
  redis                           5:7.0.15-1ubuntu0.24.04.2
  redis-sentinel                  5:7.0.15-1ubuntu0.24.04.2
  redis-server                    5:7.0.15-1ubuntu0.24.04.2
  redis-tools                     5:7.0.15-1ubuntu0.24.04.2

Ubuntu 20.04 LTS
  redis                           5:5.0.7-2ubuntu0.1+esm4
                                  Available with Ubuntu Pro
  redis-sentinel                  5:5.0.7-2ubuntu0.1+esm4
                                  Available with Ubuntu Pro
  redis-server                    5:5.0.7-2ubuntu0.1+esm4
                                  Available with Ubuntu Pro
  redis-tools                     5:5.0.7-2ubuntu0.1+esm4
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  redis                           5:4.0.9-1ubuntu0.2+esm6
                                  Available with Ubuntu Pro
  redis-sentinel                  5:4.0.9-1ubuntu0.2+esm6
                                  Available with Ubuntu Pro
  redis-server                    5:4.0.9-1ubuntu0.2+esm6
                                  Available with Ubuntu Pro
  redis-tools                     5:4.0.9-1ubuntu0.2+esm6
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  redis-sentinel                  2:3.0.6-1ubuntu0.4+esm4
                                  Available with Ubuntu Pro
  redis-server                    2:3.0.6-1ubuntu0.4+esm4
                                  Available with Ubuntu Pro
  redis-tools                     2:3.0.6-1ubuntu0.4+esm4
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  redis-server                    2:2.8.4-2ubuntu0.2+esm5
                                  Available with Ubuntu Pro
  redis-tools                     2:2.8.4-2ubuntu0.2+esm5
                                  Available with Ubuntu Pro

After a standard system update you need to restart Redis to make all the
necessary changes.

References

https://ubuntu.com/security/notices/USN-7824-1

CVE-2025-49844

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7824-1

Topics%20covered

Topics Covered

security advisory remote code execution Ubuntu important network attack redis

Package Information

https://launchpad.net/ubuntu/+source/redis/5:8.0.2-3ubuntu0.25.10.1
https://launchpad.net/ubuntu/+source/redis/5:7.0.15-3ubuntu0.1
https://launchpad.net/ubuntu/+source/redis/5:7.0.15-1ubuntu0.24.04.2

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