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Ubuntu: USN-5248-1 (CVE-2021-43535): Thunderbird vulnerabilities

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Ubuntu: USN-5248-1 (CVE-2021-43535): Thunderbird vulnerabilities

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
12/08/2021
Created
01/25/2022
Added
01/22/2022
Modified
03/22/2023

Description

A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.

Solution(s)

  • ubuntu-upgrade-thunderbird

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