Red Hat: CVE-2020-26974: CVE-2020-26974 Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free (Multiple Advisories)
7
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
12/16/2020
12/22/2020
12/21/2020
12/15/2023
Description
When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
Solution(s)
- redhat-upgrade-firefox
- redhat-upgrade-firefox-debuginfo
- redhat-upgrade-firefox-debugsource
- redhat-upgrade-thunderbird
- redhat-upgrade-thunderbird-debuginfo
- redhat-upgrade-thunderbird-debugsource
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