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Ubuntu: USN-4671-1 (CVE-2020-26972): Firefox vulnerabilities

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Ubuntu: USN-4671-1 (CVE-2020-26972): Firefox vulnerabilities

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
12/15/2020
Created
12/17/2020
Added
12/16/2020
Modified
02/17/2021

Description

The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.

Solution(s)

  • ubuntu-upgrade-firefox

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