| 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, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, 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 | 144.0.2-1 | fixed |
| firefox-esr (PTS) | bullseye | 115.14.0esr-1~deb11u1 | fixed |
| bullseye (security) | 140.4.0esr-1~deb11u1 | fixed | |
| bookworm | 128.14.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 140.4.0esr-1~deb12u1 | fixed | |
| trixie | 128.14.0esr-1~deb13u1 | fixed | |
| trixie (security) | 140.4.0esr-1~deb13u1 | fixed | |
| forky, sid | 140.4.0esr-1 | fixed | |
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | fixed |
| bullseye (security) | 1:140.4.0esr-1~deb11u1 | fixed | |
| bookworm | 1:128.14.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 1:140.4.0esr-1~deb12u1 | fixed | |
| trixie | 1:128.14.0esr-1~deb13u1 | fixed | |
| trixie (security) | 1:140.4.0esr-1~deb13u1 | fixed | |
| forky, sid | 1:140.4.0esr-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 | 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 | 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