CVE-2021-29985

High

Description

A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

SeverityHigh

CVSS8.8

Exploit probability—

Product

Mozilla Firefox

PublishedAug 17, 2021

First seenAug 17, 2021

How to fix

Update

mozilla firefox91.0 or later
mozilla firefox_esr78.13.0 or later
mozilla thunderbird78.13.0 or later

Vendor advisories

security.gentoo.org/glsa/202202-03
security.gentoo.org/glsa/202208-14

Affected products

Product	Affected versions	Fixed in
mozilla firefox	v < 91.0	91.0
mozilla firefox_esr	v < 78.13.0	78.13.0
mozilla thunderbird	v < 78.13.0	78.13.0

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