| Name | CVE-2021-38498 |
| Description | During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| firefox (PTS) | sid | 133.0.3-1 | fixed |
| firefox-esr (PTS) | jessie, jessie (lts) | 68.9.0esr-1~deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 91.11.0esr-1~deb9u1 | fixed |
| buster (security), buster, buster (lts) | 115.12.0esr-1~deb10u1 | fixed |
| 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 |
| thunderbird (PTS) | jessie, jessie (lts) | 1:68.9.0-1~deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 1:91.10.0-1~deb9u1 | fixed |
| buster (security), buster, buster (lts) | 1:115.12.0-1~deb10u1 | fixed |
| bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:128.5.0esr-1~deb11u1 | fixed |
| bookworm | 1:115.16.0esr-1~deb12u1 | fixed |
| bookworm (security) | 1:128.5.0esr-1~deb12u1 | fixed |
| sid, trixie | 1:128.5.2esr-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) | 93.0-1 | | | |
| firefox-esr | source | (unstable) | (not affected) | | | |
| thunderbird | source | (unstable) | (not affected) | | | |
Notes
- firefox-esr <not-affected> (Only affect Firefox 91 not in any supported suite in vulnerable version)
- thunderbird <not-affected> (Only affects Thunderbird 91 not in any supported suite in vulnerable version)
https://www.mozilla.org/en-US/security/advisories/mfsa2021-43/#CVE-2021-38498
https://www.mozilla.org/en-US/security/advisories/mfsa2021-45/#CVE-2021-38498
https://www.mozilla.org/en-US/security/advisories/mfsa2021-47/#CVE-2021-38498