CVE-2021-29981

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/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: 62%
VendorProductVersion
mozillafirefox
𝑥
< 91.0
mozillathunderbird
𝑥
< 91.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
132.0.1-1
fixed
thunderbird
bullseye
1:115.12.0-1~deb11u1
fixed
bullseye (security)
1:128.4.0esr-1~deb11u1
fixed
bookworm
1:115.12.0-1~deb12u1
fixed
bookworm (security)
1:128.4.0esr-1~deb12u1
fixed
sid
1:128.4.0esr-1
fixed
trixie
1:128.4.0esr-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
noble
Fixed 91.0+build2-0ubuntu1
released
mantic
Fixed 91.0+build2-0ubuntu1
released
lunar
Fixed 91.0+build2-0ubuntu1
released
kinetic
Fixed 91.0+build2-0ubuntu1
released
jammy
Fixed 91.0+build2-0ubuntu1
released
impish
Fixed 91.0+build2-0ubuntu1
released
hirsute
Fixed 91.0+build2-0ubuntu0.21.04.1
released
focal
Fixed 91.0+build2-0ubuntu0.20.04.1
released
bionic
Fixed 91.0+build2-0ubuntu0.18.04.1
released
xenial
ignored
trusty
dne
mozjs38
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
mozjs52
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
ignored
bionic
ignored
xenial
dne
trusty
dne
mozjs68
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
ignored
bionic
dne
xenial
dne
trusty
dne
mozjs78
noble
dne
mantic
dne
lunar
ignored
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
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
ignored
focal
Fixed 1:91.5.0+build1-0ubuntu0.20.04.1
released
bionic
Fixed 1:91.5.0+build1-0ubuntu0.18.04.1
released
xenial
ignored
trusty
dne
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1707774
https://security.gentoo.org/glsa/202202-03
https://www.mozilla.org/security/advisories/mfsa2021-33/
https://www.mozilla.org/security/advisories/mfsa2021-36/
https://bugzilla.mozilla.org/show_bug.cgi?id=1707774
https://security.gentoo.org/glsa/202202-03
https://www.mozilla.org/security/advisories/mfsa2021-33/
https://www.mozilla.org/security/advisories/mfsa2021-36/