vulnerability
Arch Linux: Arbitrary code execution (CVE-2020-6820)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Apr 24, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Apr 24, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A use-after-free vulnerability has been found in Firefox before 74.0.1 and Thunderbird before 68.7.0 where, under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. Mozilla is aware of targeted attacks in the wild abusing this flaw.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-6820
- https://attackerkb.com/topics/CVE-2020-6820
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1626728
- URL-https://security.archlinux.org/ASA-202004-12
- URL-https://security.archlinux.org/ASA-202004-6
- URL-https://usn.ubuntu.com/4335-1/
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2020-14/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-11/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-14/
- CWE-362
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