CVE-2021-29952

When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerability affects Firefox < 88.0.1 and Firefox for Android < 88.1.3.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
mozillaCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 48%
VendorProductVersion
mozillafirefox
𝑥
< 88.0.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
132.0.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
noble
Fixed 88.0.1+build1-0ubuntu2
released
mantic
Fixed 88.0.1+build1-0ubuntu2
released
lunar
Fixed 88.0.1+build1-0ubuntu2
released
kinetic
Fixed 88.0.1+build1-0ubuntu2
released
jammy
Fixed 88.0.1+build1-0ubuntu2
released
impish
Fixed 88.0.1+build1-0ubuntu2
released
hirsute
Fixed 88.0.1+build1-0ubuntu0.21.04.2
released
groovy
Fixed 88.0.1+build1-0ubuntu0.20.10.2
released
focal
Fixed 88.0.1+build1-0ubuntu0.20.04.2
released
bionic
Fixed 88.0.1+build1-0ubuntu0.18.04.2
released
xenial
ignored
trusty
dne
mozjs38
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
mozjs52
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
ignored
focal
ignored
bionic
ignored
xenial
dne
trusty
dne
mozjs68
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
ignored
focal
ignored
bionic
dne
xenial
dne
trusty
dne
mozjs78
noble
dne
mantic
dne
lunar
ignored
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
groovy
ignored
focal
dne
bionic
dne
xenial
dne
trusty
dne
thunderbird
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
ignored
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
dne