Description
When reading a file, an uninitialized value could have been used as read limit. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 113 | 113 |
| Mozilla | Firefox ESR | unspecified – < 102.11 | 102.11 |
| Mozilla | Thunderbird | unspecified – < 102.11 | 102.11 |
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 | 102.11.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.11.0-1 | — |
| Debian 13 | firefox-esr | 102.11.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.11.0-1 | — |
| Debian 12 | firefox-esr | 102.11.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.11.0-1 | — |
| Debian 11 | firefox-esr | 102.11.0esr-1~deb11u1 | DSA-5400-1 |
| Debian 11 | thunderbird | 1:102.11.0-1~deb11u1 | DSA-5403-1 |
| Debian 10 | firefox-esr | 102.11.0esr-1~deb10u1 | DLA-3417-1 |
| Debian 10 | thunderbird | 1:102.11.0-1~deb10u1 | DLA-3421-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mozjs78 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.11.0+build1-0ubuntu0.22.04.1 | USN-6075-1 |
| Ubuntu 20.04 LTS | firefox | 113.0+build2-0ubuntu0.20.04.1 | USN-6074-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.11.0+build1-0ubuntu0.20.04.1 | USN-6075-1 |
| Ubuntu 18.04 LTS | firefox | 113.0+build2-0ubuntu0.18.04.1 | USN-6074-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.11.0+build1-0ubuntu0.18.04.1 | USN-6075-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 102.11.0-2.el9_2 | RHSA-2023:3143 |
| RHEL 9 | thunderbird | 102.11.0-1.el9_2 | RHSA-2023:3150 |
| RHEL 8 | firefox | 102.11.0-2.el8_7 | RHSA-2023:3220 |
| RHEL 8 | thunderbird | 102.11.0-1.el8_7 | RHSA-2023:3221 |
| RHEL 7 | firefox | 102.11.0-2.el7_9 | RHSA-2023:3137 |
| RHEL 7 | thunderbird | 102.11.0-1.el7_9 | RHSA-2023:3151 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.11.0-2.el9_0 | RHSA-2023:3142 |
| RHEL 9.0 EUS | thunderbird | 102.11.0-1.el9_0 | RHSA-2023:3149 |
| RHEL 8.6 EUS | firefox | 102.11.0-2.el8_6 | RHSA-2023:3141 |
| RHEL 8.6 EUS | thunderbird | 102.11.0-1.el8_6 | RHSA-2023:3155 |
| RHEL 8.4 EUS | firefox | 102.11.0-2.el8_4 | RHSA-2023:3140 |
| RHEL 8.4 EUS | thunderbird | 102.11.0-1.el8_4 | RHSA-2023:3154 |
| RHEL 8.2 TUS | firefox | 102.11.0-2.el8_2 | RHSA-2023:3139 |
| RHEL 8.2 TUS | thunderbird | 102.11.0-1.el8_2 | RHSA-2023:3153 |
| RHEL 8.2 E4S | firefox | 102.11.0-2.el8_2 | RHSA-2023:3139 |
| RHEL 8.2 E4S | thunderbird | 102.11.0-1.el8_2 | RHSA-2023:3153 |
| RHEL 8.2 AUS | firefox | 102.11.0-2.el8_2 | RHSA-2023:3139 |
| RHEL 8.2 AUS | thunderbird | 102.11.0-1.el8_2 | RHSA-2023:3153 |
| RHEL 8.1 E4S | firefox | 102.11.0-2.el8_1 | RHSA-2023:3138 |
| RHEL 8.1 E4S | thunderbird | 102.11.0-1.el8_1 | RHSA-2023:3152 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 102.11.0-2.el9_2.alma | ALSA-2023:3143 |
| AlmaLinux 9 | thunderbird | 102.11.0-1.el9_2.alma | ALSA-2023:3150 |
| AlmaLinux 8 | firefox | 102.11.0-2.el8_7.alma | ALSA-2023:3220 |
| AlmaLinux 8 | thunderbird | 102.11.0-1.el8_7.alma | ALSA-2023:3221 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox | 102.11.0-2.el8_7 | RLSA-2023:3220 |
| Rocky Linux 8 | thunderbird | 102.11.0-1.el8_7 | RLSA-2023:3221 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.11.0-150200.8.116.1 | SUSE-SU-2023:2211-1 |
| SLES 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES 15 SP2 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES 15 SP1 | MozillaFirefox | 102.11.0-150000.150.85.1 | SUSE-SU-2023:2175-1 |
| SLES 12 SP5 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLES 12 SP2 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.11.0-150000.150.85.1 | SUSE-SU-2023:2175-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.11.0-150000.150.85.1 | SUSE-SU-2023:2175-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.11.0-112.159.1 | SUSE-SU-2023:2176-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 113.0-1.1 | openSUSE-SU-2024:12920-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.11.0-1.1 | openSUSE-SU-2024:12921-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.11.0-150200.152.87.1 | SUSE-SU-2023:2173-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.11.0-150200.8.116.1 | SUSE-SU-2023:2211-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.11.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.11.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.11.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.11.0-1.amzn2.0.1 | ALAS2-2023-2051 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 102.11.0-2.0.1.el9_2 | ELSA-2023-3143 |
| Oracle Linux 9 | thunderbird | 102.11.0-1.0.1.el9_2 | ELSA-2023-3150 |
| Oracle Linux 8 | firefox | 102.11.0-2.0.1.el8_7 | ELSA-2023-3220 |
| Oracle Linux 8 | thunderbird | 102.11.0-1.0.1.el8_7 | ELSA-2023-3221 |
| Oracle Linux 7 | firefox | 102.11.0-2.0.1.el7_9 | ELSA-2023-3137 |
| Oracle Linux 7 | thunderbird | 102.11.0-1.0.1.el7_9 | ELSA-2023-3151 |
Advisories 45
- ALSA-2023:3143 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3150 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3220 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:3221 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- RHSA-2023:3220 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3221 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3154 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3155 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3152 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3153 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3150 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3151 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3143 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3149 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3142 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3141 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3140 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3138 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3139 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:3137 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-6075-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6074-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5400-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5403-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3421-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3417-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:3220 Important: firefox security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:3221 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:2173-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2175-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12920-1 MozillaFirefox-113.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2211-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2176-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12921-1 MozillaThunderbird-102.11.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1172 Mozilla Firefox und Mozilla Firefox ESR: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 7, 2024
- WID-SEC-2023-1201 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 20, 2023
- ELSA-2023-3220 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 8, 2023
- ALAS2-2023-2051 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 1, 2023
- ELSA-2023-3221 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2023
- ELSA-2023-3143 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 19, 2023
- ELSA-2023-3150 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 17, 2023
- ELSA-2023-3151 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 17, 2023
- ELSA-2023-3137 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 17, 2023