| Name | CVE-2021-38496 |
| Description | During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. |
| 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-2782-1, DLA-2874-1, DSA-4981-1, DSA-5034-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 125.0.1-2 | fixed |
| firefox-esr (PTS) | jessie, jessie (lts) | 68.9.0esr-1~deb8u2 | vulnerable |
| stretch (security), stretch (lts), stretch | 91.11.0esr-1~deb9u1 | fixed | |
| buster | 91.12.0esr-1~deb10u1 | fixed | |
| buster (security) | 115.9.1esr-1~deb10u1 | fixed | |
| bullseye | 115.7.0esr-1~deb11u1 | fixed | |
| bullseye (security) | 115.10.0esr-1~deb11u1 | fixed | |
| bookworm | 115.7.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 115.10.0esr-1~deb12u1 | fixed | |
| trixie | 115.8.0esr-1 | fixed | |
| sid | 115.10.0esr-1 | fixed | |
| thunderbird (PTS) | jessie, jessie (lts) | 1:68.9.0-1~deb8u2 | vulnerable |
| stretch (security), stretch (lts), stretch | 1:91.10.0-1~deb9u1 | fixed | |
| buster | 1:91.12.0-1~deb10u1 | fixed | |
| buster (security) | 1:115.9.0-1~deb10u1 | fixed | |
| bullseye | 1:115.7.0-1~deb11u1 | fixed | |
| bullseye (security) | 1:115.9.0-1~deb11u1 | fixed | |
| bookworm | 1:115.7.0-1~deb12u1 | fixed | |
| bookworm (security) | 1:115.9.0-1~deb12u1 | fixed | |
| sid | 1:115.9.0-1 | 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 | jessie | (unfixed) | end-of-life | ||
| firefox-esr | source | stretch | 78.15.0esr-1~deb9u1 | DLA-2782-1 | ||
| firefox-esr | source | buster | 78.15.0esr-1~deb10u1 | DSA-4981-1 | ||
| firefox-esr | source | bullseye | 78.15.0esr-1~deb11u1 | DSA-4981-1 | ||
| firefox-esr | source | (unstable) | 91.2.0esr-1 | |||
| thunderbird | source | experimental | 1:91.2.0-1 | |||
| thunderbird | source | jessie | (unfixed) | end-of-life | ||
| thunderbird | source | stretch | 1:91.4.1-1~deb9u1 | DLA-2874-1 | ||
| thunderbird | source | buster | 1:91.4.1-1~deb10u1 | DSA-5034-1 | ||
| thunderbird | source | bullseye | 1:91.4.1-1~deb11u1 | DSA-5034-1 | ||
| thunderbird | source | (unstable) | 1:91.2.1-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2021-43/#CVE-2021-38496
https://www.mozilla.org/en-US/security/advisories/mfsa2021-44/#CVE-2021-38496
https://www.mozilla.org/en-US/security/advisories/mfsa2021-45/#CVE-2021-38496
https://www.mozilla.org/en-US/security/advisories/mfsa2021-46/#CVE-2021-38496
https://www.mozilla.org/en-US/security/advisories/mfsa2021-47/#CVE-2021-38496