CVE-2021-38496
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3755
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3838
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-38496
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 91.2.0-1 | |
| debian | sid | fixed | 93.0-1 |
| debian | bookworm | fixed | 91.2.0esr-1 |
| debian | bullseye | fixed | 78.15.0esr-1~deb11u1 |
| debian | forky | fixed | 91.2.0esr-1 |
| debian | trixie | fixed | 91.2.0esr-1 |
| rocky | 8 | fixed | |
References
Verify integrity in audit chain (admin only). AS-IS.