| Name | CVE-2021-29955 |
| Description | A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.). This vulnerability affects Firefox ESR < 78.9 and Firefox < 87. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2607-1, DSA-4874-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 133.0.3-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
| bullseye (security) | 128.5.0esr-1~deb11u1 | fixed | |
| bookworm | 128.3.1esr-1~deb12u1 | fixed | |
| bookworm (security) | 128.5.0esr-1~deb12u1 | fixed | |
| trixie | 128.5.0esr-1 | fixed | |
| sid | 128.5.1esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | 87.0-1 | |||
| firefox-esr | source | stretch | 78.9.0esr-1~deb9u1 | DLA-2607-1 | ||
| firefox-esr | source | buster | 78.9.0esr-1~deb10u1 | DSA-4874-1 | ||
| firefox-esr | source | (unstable) | 78.9.0esr-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-29955
https://www.mozilla.org/en-US/security/advisories/mfsa2021-11/#CVE-2021-29955