vulnerability
Arch Linux: Arbitrary code execution (CVE-2019-9821)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jul 23, 2019 | Jul 11, 2025 | Mar 25, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jul 23, 2019
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
A use-after-free vulnerability can occur in AssertWorkerThread in Firefox before 67.0, due to a race condition with shared workers. This results in a potentially exploitable crash.
Solution
arch-linux-upgrade-latest
References
- CVE-2019-9821
- https://attackerkb.com/topics/CVE-2019-9821
- https://bugzilla.mozilla.org/show_bug.cgi?id=1539125
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-19183
- https://security.archlinux.org/ASA-201905-9
- https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/
- https://www.mozilla.org/security/advisories/mfsa2019-13/
- CWE-362
- CWE-416
- EUVD-EUVD-2019-19183
Rapid7 Labs
2026 Global Threat Landscape Report
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