Mageia has released a critical Redis security update (MGASA-2025-0211) patching multiple vulnerabilities, including CVE-2025-27151 and CVE-2023-41056. Learn about breaking changes, key fixes, and how to safely upgrade from Redis 7.0 to 7.2.
Critical Redis Security Patch: What You Need to Know
Mageia has issued an urgent security update (MGASA-2025-0211) for Redis, addressing multiple high-risk vulnerabilities. This patch upgrades Redis from 7.0 to 7.2, introducing critical security fixes and potential breaking changes. System administrators and DevOps teams must prioritize this update to mitigate risks such as CVE-2025-27151 and CVE-2023-41056, which could expose systems to exploitation.
Why This Update Matters
Security Enhancements: Fixes multiple CVEs, reducing attack surfaces.
Performance Improvements: Optimizes command execution and ACL handling.
Behavioral Changes: Some updates may affect existing Redis configurations.
Did You Know? Redis powers over 30% of all caching solutions in enterprise environments. Keeping it updated is crucial for security and performance.
Key Security Fixes in Redis 7.2.10
The updated Redis package (7.2.10) resolves critical vulnerabilities, including:
CVE-2025-27151 – A severe memory corruption flaw allowing remote code execution.
CVE-2023-41056 – An authentication bypass in certain Redis configurations.
CVE-2025-32023 – A denial-of-service (DoS) risk in stream command handling.
Breaking Changes & Behavioral Updates
Before upgrading, consider these potential compatibility issues:
✔ Client-Side Script Tracking
Now tracks keys read by scripts rather than those declared by
EVAL/FCALLcalls. (#11770)
✔ ACL & OOM Re-Evaluation
Blocked commands now re-check ACLs and memory limits upon unblocking. (#11012)
✔ Stream Command Error Handling
Blocked stream commands now return a different error code if the key no longer exists.
✔ Command Execution Time Freezing
Time sampling now pauses during script execution for consistency. (#10300)
Should You Upgrade Immediately?
Yes, but with caution. While most deployments will transition smoothly, some Redis-dependent applications may require adjustments due to:
ACL rule changes (unified error messages & codes).
Blocked command execution stats now updating only after successful execution.
How to Safely Apply the Update
Test in staging before deploying to production.
Review Redis logs for unexpected behavior post-upgrade.
Monitor performance for any latency spikes.
References & Further Reading
FAQs: Redis Security Update
❓ Will this update break my existing Redis setup?
A: Most users won’t experience issues, but applications relying on specific Redis behaviors (e.g., ACL checks) should test first.
❓ Is downgrading possible if problems occur?
A: Yes, but not recommended due to security risks. Instead, adjust configurations to align with Redis 7.2.
❓ Are there workarounds for critical vulnerabilities?
A: No—applying the patch is the only secure solution.
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