CVE-2021-43539

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-43539
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43539.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-43539
Downstream
Related
Published
2021-12-08T22:15:09Z
Modified
2025-08-09T19:01:27Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages