firefox: A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers
CVE-2019-9821 is fixed in 4 products on 1 platform, first by firefox 67.0+build2-0ubuntu0.18.04.1, released May 20, 2019. It is not reported as exploited. Patch Radar priority: Routine.
A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results in a potentially exploitable crash. This vulnerability affects Firefox < 67.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 67.0+build2-0ubuntu0.18.04.1 | firefox 67.0+build2-0ubuntu0.18.04.1 | May 20, 2019 |
| firefox-globalmenu · Ubuntu 18.04.6 LTS (bionic) | 67.0+build2-0ubuntu0.18.04.1 | firefox-globalmenu 67.0+build2-0ubuntu0.18.04.1 | May 20, 2019 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 67.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 67.0+build2-0ubuntu0.18.04.1 | May 20, 2019 |
| firefox-testsuite · Ubuntu 18.04.6 LTS (bionic) | 67.0+build2-0ubuntu0.18.04.1 | firefox-testsuite 67.0+build2-0ubuntu0.18.04.1 | May 20, 2019 |
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