Description
A mismatch between allocator and deallocator could have led to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 128 | 128 |
| Mozilla | Firefox ESR | unspecified – < 115.13 | 115.13 |
| Mozilla | Thunderbird | unspecified – < 115.13, unspecified – < 128 | 115.13 |
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 | 115.13.0esr-1 | — |
| Debian 14 | nss | 2:3.101-1 | — |
| Debian 14 | thunderbird | 1:115.13.0-1 | — |
| Debian 13 | firefox-esr | 115.13.0esr-1 | — |
| Debian 13 | nss | 2:3.101-1 | — |
| Debian 13 | thunderbird | 1:115.13.0-1 | — |
| Debian 12 | firefox-esr | 115.13.0esr-1~deb12u1 | DSA-5727-1 |
| Debian 12 | nss | 2:3.87.1-1+deb12u1 | DSA-5807-1 |
| Debian 12 | thunderbird | 1:115.13.0-1~deb12u1 | DSA-5733-1 |
| Debian 11 | firefox-esr | 115.13.0esr-1~deb11u1 | DSA-5727-1 |
| Debian 11 | nss | 2:3.61-1+deb11u4 | DLA-3937-1 |
| Debian 11 | thunderbird | 1:115.13.0-1~deb11u1 | DSA-5733-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | mozjs102 | No fix yet | — |
| Ubuntu 22.04 LTS | mozjs78 +2 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:115.13.0+build5-0ubuntu0.22.04.1 | USN-6903-1 |
| Ubuntu 20.04 LTS | firefox | 128.0+build2-0ubuntu0.20.04.1 | USN-6890-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:115.13.0+build5-0ubuntu0.20.04.1 | USN-6903-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | nspr +1 | 4.35.0-14.el9_2 | RHBA-2024:6679 |
| RHEL 9 | nss +9 | 3.101.0-7.el9_2 | RHBA-2024:6679 |
| RHEL 8 | nss +9 | 3.101.0-7.el8_8 | RHBA-2024:6680 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.2 EUS | nspr +1 | 4.35.0-14.el9_2 | RHBA-2024:6679 |
| RHEL 9.2 EUS | nss +9 | 3.101.0-7.el9_2 | RHBA-2024:6679 |
| RHEL 9.2 EUS | thunderbird | 115.13.0-3.el9_2 | RHSA-2024:4670 |
| RHEL 9.0 E4S | thunderbird | 115.13.0-3.el9_0 | RHSA-2024:4625 |
| RHEL 8.8 EUS | nss +9 | 3.101.0-7.el8_8 | RHBA-2024:6680 |
| RHEL 8.8 EUS | thunderbird | 115.13.0-3.el8_8 | RHSA-2024:4718 |
| RHEL 8.6 TUS | thunderbird | 115.13.0-3.el8_6 | RHSA-2024:4894 |
| RHEL 8.6 E4S | thunderbird | 115.13.0-3.el8_6 | RHSA-2024:4894 |
| RHEL 8.6 AUS | thunderbird | 115.13.0-3.el8_6 | RHSA-2024:4894 |
| RHEL 8.4 TUS | thunderbird | 115.13.0-3.el8_4 | RHSA-2024:4671 |
| RHEL 8.4 E4S | thunderbird | 115.13.0-3.el8_4 | RHSA-2024:4671 |
| RHEL 8.4 AUS | thunderbird | 115.13.0-3.el8_4 | RHSA-2024:4671 |
| RHEL 8.2 AUS | thunderbird | 115.13.0-3.el8_2 | RHSA-2024:4717 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES 15 SP6 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES 15 SP6 | MozillaThunderbird | 115.13.0-150200.8.171.4 | SUSE-SU-2024:3507-1, SUSE-SU-2024:2790-1 |
| SLES 15 SP5 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES 15 SP5 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES 15 SP5 | MozillaThunderbird | 115.13.0-150200.8.171.4 | SUSE-SU-2024:3507-1, SUSE-SU-2024:2790-1 |
| SLES 15 SP4 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES 15 SP4 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES 15 SP3 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES 15 SP3 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES 15 SP2 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES 15 SP2 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 115.13.0-112.218.1 | SUSE-SU-2024:2876-1, SUSE-SU-2024:2371-1 |
| SLES 12 SP5 | MozillaFirefox-branding-SLE | 128-35.15.1 | SUSE-SU-2024:2876-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES for SAP 15 SP4 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES for SAP 15 SP3 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLES for SAP 15 SP2 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 115.13.0-112.218.1 | SUSE-SU-2024:2876-1, SUSE-SU-2024:2371-1 |
| SLES for SAP 12 SP5 | MozillaFirefox-branding-SLE | 128-35.15.1 | SUSE-SU-2024:2876-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLE HPC 15 SP4 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLE HPC 15 SP3 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SLE HPC 15 SP2 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 128.0-1.1 | openSUSE-SU-2024:14197-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 115.13.0-1.1 | openSUSE-SU-2024:14189-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.6 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| openSUSE Leap 15.6 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| openSUSE Leap 15.6 | MozillaThunderbird | 115.13.0-150200.8.171.4 | SUSE-SU-2024:3507-1, SUSE-SU-2024:2790-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 115.13.0-150200.152.143.1 | SUSE-SU-2024:3003-1, SUSE-SU-2024:2399-1 |
| openSUSE Leap 15.5 | MozillaFirefox-branding-SLE | 128-150200.9.16.1 | SUSE-SU-2024:3003-1 |
| openSUSE Leap 15.5 | MozillaThunderbird | 115.13.0-150200.8.171.4 | SUSE-SU-2024:3507-1, SUSE-SU-2024:2790-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | firefox | 128.0-r0 | — |
Advisories 24
- USN-6890-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6903-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- RHSA-2024:4894 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4671 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4717 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4625 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4670 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:4718 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- DSA-5807-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5733-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5727-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3937-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:2876-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14189-1 MozillaThunderbird-115.13.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14197-1 MozillaFirefox-128.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2399-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2371-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3003-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3507-1 Security update for MozillaThunderbird 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
- SUSE-SU-2024:2790-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- RHBA-2024:6679 Red Hat Bug Fix Advisory: nss bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jan 24, 2026
- RHBA-2024:6680 Red Hat Bug Fix Advisory: nss bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jan 24, 2026
- WID-SEC-2024-1568 Mozilla Firefox und Firefox ESR: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 16, 2025