The incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior. Note: This issue only affects the application when the profiler is running. This vulnerability affects Firefox < 123.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-1556
• https://bugzilla.mozilla.org/show_bug.cgi?id=1870414
• https://www.mozilla.org/security/advisories/mfsa2024-05