CVE-2021-29981 PUBLISHED

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.

EPSS 0.44% · 63.2th percentile

Risk Scores

EPSS Score
0.44%
63.2th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSfirefox90.0.2+build1-0ubuntu0.20.04.1, 90.0+build1-0ubuntu0.20.04.1, 89.0.2+build1-0ubuntu0.20.04.1
Ubuntu:18.04:LTSfirefox76.0.1+build1-0ubuntu0.18.04.1, 77.0.1+build1-0ubuntu0.18.04.1, 78.0.1+build1-0ubuntu0.18.04.1
Ubuntu:20.04:LTSmozjs680, 68.5.0-1~fakesync, 68.5.0-2~fakesync
Ubuntu:20.04:LTSmozjs520, 52.9.1-1build1, 52.9.1-1ubuntu3
Ubuntu:20.04:LTSthunderbird1:68.7.0+build1-0ubuntu1, 1:68.7.0+build1-0ubuntu2, 1:68.8.0+build2-0ubuntu0.20.04.2
Ubuntu:22.04:LTSmozjs780, 78.15.0-2, 78.13.0-1
Ubuntu:18.04:LTSmozjs5252.8.1-0ubuntu0.18.04.1, 52.9.1-0ubuntu0.18.04.1, 52.3.1-7fakesync1
Ubuntu:18.04:LTSthunderbird0, 1:78.14.0+build1-0ubuntu0.18.04.2, 1:78.14.0+build1-0ubuntu0.18.04.1
Ubuntu:18.04:LTSmozjs3838.8.0~repack1-0ubuntu4, 0, 38.8.0~repack1-0ubuntu1

Timeline

References

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