CVE-2021-29981
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-29981
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-29981.html
Vendor advisory: arch — https://security.archlinux.org/ASA-202108-14
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 91.1.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 91.0-1 |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 0 |
| debian | trixie | fixed | 0 |
References
Verify integrity in audit chain (admin only). AS-IS.