When a worker is shutdown, it was possible to cause script to run late in the lifecycle, at a point after where it should not be possible. This vulnerability affects Firefox < 96, Thunderbird < 91.6, and Firefox ESR < 91.6.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2022-05/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2022-06/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2022-01/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1740534 | issue tracking vendor advisory |