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Mozilla Foundation Security Advisory 2015-87

Crash when using shared memory in JavaScript

Announced
August 11, 2015
Reporter
Jukka Jylänki
Impact
Moderate
Products
Firefox, Firefox ESR, SeaMonkey
Fixed in
  • Firefox 40
  • Firefox ESR 38.2
  • SeaMonkey 2.35

Description

Security researcher Jukka Jylänki reported a crash that occurs because JavaScript, when using shared memory, does not properly gate access to Atomics or SharedArrayBuffer views in some contexts. This leads to a non-exploitable crash.

References