Security Advisory

CVE-2021-43539

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-12-08 21:20:15

Last updated 2024-08-04 04:03:06

Assigner mozilla

State PUBLISHED

Description

Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

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