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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2021-12-08T21:20:15

Updated: 2024-08-04T04:03:06.894Z

Reserved: 2021-11-08T00:00:00

Link: CVE-2021-43539

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-12-08T22:15:09.730

Modified: 2022-12-09T15:55:49.220

Link: CVE-2021-43539

cve-icon Redhat

Severity : Important

Publid Date: 2021-12-07T00:00:00Z

Links: CVE-2021-43539 - Bugzilla