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MariaDB: Use-After-Free in BTREE Index Traversal via Stale key_version in heap_update() in MariaDB Server

🗓️ 30 May 2026 10:33:58Reported by lukas_kupczykType 
hackerone
 hackerone🔗 hackerone.com👁 17 Views

A use-after-free vulnerability was discovered in the MEMORY (HEAP) storage engine of MariaDB Server. The vulnerability was caused by incorrect handling of the key_changed variable in the heap_update() function, which could lead to stale pointers b...

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14 Sep 2026 16:05Current
6.1Medium risk
Vulners AI Score6.1
17