Description
Previously Firefox for macOS and Linux would download temporary files to a user-specific directory in <code>/tmp</code>, but this behavior was changed to download them to <code>/tmp</code> where they could be affected by other local users. This behavior was reverted to the original, user-specific directory. <br>*This bug only affects Firefox for macOS and Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 91.7 and Thunderbird < 91.7.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox ESR | unspecified – < 91.7 | 91.7 |
| Mozilla | Thunderbird | unspecified – < 91.7 | 91.7 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 91.7.0esr-1 | — |
| Debian 14 | thunderbird | 1:91.7.0-1 | — |
| Debian 13 | firefox-esr | 91.7.0esr-1 | — |
| Debian 13 | thunderbird | 1:91.7.0-1 | — |
| Debian 12 | firefox-esr | 91.7.0esr-1 | — |
| Debian 12 | thunderbird | 1:91.7.0-1 | — |
| Debian 11 | firefox-esr | 91.7.0esr-1~deb11u1 | DSA-5097-1 |
| Debian 11 | thunderbird | 1:91.7.0-2~deb11u1 | DSA-5106-1 |
| Debian 10 | firefox-esr | 91.7.0esr-1~deb10u1 | DSA-5097-1 |
| Debian 10 | thunderbird | 1:91.7.0-2~deb10u1 | DSA-5106-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | firefox-esr | 91.7.0esr-1~deb9u1 | DLA-2942-1 |
| Debian 9 | thunderbird | 1:91.7.0-2~deb9u1 | DLA-2961-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | thunderbird | 1:91.7.0+build2-0ubuntu1 | — |
| Ubuntu 20.04 LTS | thunderbird | 1:91.7.0+build2-0ubuntu0.20.04.1 | USN-5345-1 |
| Ubuntu 18.04 LTS | thunderbird | 1:91.7.0+build2-0ubuntu0.18.04.1 | USN-5345-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | firefox | 91.7.0-3.el8_5 | RHSA-2022:0818 |
| RHEL 8 | thunderbird | 91.7.0-2.el8_5 | RHSA-2022:0845 |
| RHEL 7 | firefox | 91.7.0-3.el7_9 | RHSA-2022:0824 |
| RHEL 7 | thunderbird | 91.7.0-2.el7_9 | RHSA-2022:0850 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.4 EUS | firefox | 91.7.0-3.el8_4 | RHSA-2022:0817 |
| RHEL 8.4 EUS | thunderbird | 91.7.0-2.el8_4 | RHSA-2022:0853 |
| RHEL 8.2 EUS | firefox | 91.7.0-3.el8_2 | RHSA-2022:0816 |
| RHEL 8.2 EUS | thunderbird | 91.7.0-2.el8_2 | RHSA-2022:0843 |
| RHEL 8.1 E4S | firefox | 91.7.0-3.el8_1 | RHSA-2022:0815 |
| RHEL 8.1 E4S | thunderbird | 91.7.0-2.el8_1 | RHSA-2022:0847 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | firefox | 91.7.0-3.el8_5.alma | ALSA-2022:0818 |
| AlmaLinux 8 | thunderbird | 91.7.0-2.el8_5.alma | ALSA-2022:0845 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox | 91.7.0-3.el8_5 | RLSA-2022:0818 |
| Rocky Linux 8 | thunderbird | 91.7.0-2.el8_5 | RLSA-2022:0845 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaThunderbird | 91.7.0-150200.8.62.7 | SUSE-SU-2022:0906-1 |
| SLES 15 SP3 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SLES 15 SP3 | MozillaThunderbird | 91.7.0-150200.8.62.7 | SUSE-SU-2022:0906-1 |
| SLES 15 SP2 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SLES 15 SP1 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
| SLES 15 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
Show 25 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLES 12 SP4 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLES 12 SP3 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLES 12 SP2 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLES 11 SP4 | MozillaFirefox | 91.7.0-78.167.1 | SUSE-SU-2022:14906-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
| SLES for SAP 15 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SLE Real Time 15 SP2 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
| SLE HPC 15 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SUSE OpenStack Cloud Crowbar 8 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SUSE OpenStack Cloud 8 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SUSE Manager Server 4.1 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SUSE HPE Helion OpenStack 8 | MozillaFirefox | 91.7.0-112.95.1 | SUSE-SU-2022:0822-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 91.7.0-152.22.1 | SUSE-SU-2022:0821-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox | 91.7.0-150.24.1 | SUSE-SU-2022:0819-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 91.7.0-1.1 | openSUSE-SU-2024:11909-1 |
| openSUSE Leap 15.3 | MozillaFirefox | 91.7.0-152.22.1 | openSUSE-SU-2022:0821-1 |
| openSUSE Leap 15.3 | MozillaThunderbird | 91.7.0-150200.8.62.7 | openSUSE-SU-2022:0906-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.22 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.21 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.20 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.19 | firefox-esr +1 | 91.7.0-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.17 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.16 | firefox-esr +1 | 91.7.0-r0 | — |
| Alpine v3.15 | firefox-esr | 91.7.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 91.7.0-2.amzn2.0.1 | ALAS2-2022-1779 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | firefox | 91.7.0-3.0.1.el8_5 | ELSA-2022-0818 |
| Oracle Linux 8 | thunderbird | 91.7.0-2.0.1.el8_5 | ELSA-2022-0845 |
| Oracle Linux 7 | firefox | 91.7.0-3.0.1.el7_9 | ELSA-2022-0824 |
| Oracle Linux 7 | thunderbird | 91.7.0-2.0.1.el7_9 | ELSA-2022-0850 |
Advisories 36
- ALSA-2022:0845 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:0818 Critical: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:0853 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0847 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0850 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0845 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0843 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0824 Red Hat Security Advisory: firefox security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0818 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0816 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0817 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0815 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2022-0432 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- WID-SEC-2022-0302 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten BSI CERT-Bund (WID) · Oct 11, 2026
- USN-5345-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5106-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5097-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2961-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2942-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:0818 Critical: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2022:0845 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:14906-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0906-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0822-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0906-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0821-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0819-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0821-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1335 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- openSUSE-SU-2024:11909-1 MozillaThunderbird-91.7.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2022-1034 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 1, 2023
- ALAS2-2022-1779 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 27, 2022
- ELSA-2022-0845 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 14, 2022
- ELSA-2022-0850 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 14, 2022
- ELSA-2022-0818 Critical: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 10, 2022
- ELSA-2022-0824 Critical: firefox security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 10, 2022