CVE-2021-38498

Description

During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

Affected Platforms

Weakness Type

CWE-416

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1729642
• https://www.mozilla.org/security/advisories/mfsa2021-43/
• https://www.mozilla.org/security/advisories/mfsa2021-45/
• https://www.mozilla.org/security/advisories/mfsa2021-47/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1729642
• https://www.mozilla.org/security/advisories/mfsa2021-43/