Redis: Critical Memory Safety Fixes
Three critical fixes were merged to Redis addressing integer overflow, use-after-free vulnerabilities, and corrupt RDB data handling. All changes include comprehensive test coverage to prevent regression.
Duration: PT1M59S
Episode overview
This episode is a short developer briefing from Redis.
It explains recent repository work in plain language.
- Show: Redis
- Published: 2026-04-23T00:00:00Z
- Audio duration: PT1M59S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, this is your Redis developer briefing for April 23rd, 2026.
Three important security and stability fixes landed in the Redis codebase today. Vitah Lin merged a fix for signed integer overflow in the scan count parameter. The issue occurred when count exceeded LONG_MAX divided by 10, causing undefined behavior in scanGenericCommand. The solution implements saturating…
Darsheel Rathore addressed a use-after-free vulnerability in RM_RegisterClusterMessageReceiver. When unlinking receiver nodes from the cluster receivers linked list, the code incorrectly updated the next pointer instead of the head pointer when removing the first node. This left dangling pointers that could crash…
SGgeorgiev merged protection against corrupt stream RDB payloads where multiple consumers reference the same NACK entry. This violates Redis stream data structures and previously caused silent corruption. The fix adds validation during RDB loading to detect when a NACK is already claimed by another consumer, failing…
All three fixes include comprehensive test coverage. The integer overflow fix uses UBSan detection, the use-after-free fix addresses issue 15057, and the stream corruption fix…
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