Description
A use-after-free condition existed in `NotifyOnHistoryReload` where a `LoadingSessionHistoryEntry` object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused. This vulnerability affects Firefox < 115.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 115 | 115 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firefox | 115.0+build2-0ubuntu0.20.04.3 | USN-6201-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP5 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP4 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP4 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP2 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP2 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP1 | MozillaFirefox | 115.0-150000.150.91.1 | SUSE-SU-2023:2849-1 |
| SLES 15 SP1 | MozillaFirefox-branding-SLE | 115-150000.4.25.1 | SUSE-SU-2023:2849-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES 12 SP5 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES 12 SP4 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES 12 SP4 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES 12 SP2 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES 12 SP2 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP2 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 115.0-150000.150.91.1 | SUSE-SU-2023:2849-1 |
| SLES for SAP 15 SP1 | MozillaFirefox-branding-SLE | 115-150000.4.25.1 | SUSE-SU-2023:2849-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES for SAP 12 SP5 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES for SAP 12 SP4 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLE Real Time 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP2 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 115.0-150000.150.91.1 | SUSE-SU-2023:2849-1 |
| SLE HPC 15 SP1 | MozillaFirefox-branding-SLE | 115-150000.4.25.1 | SUSE-SU-2023:2849-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 115.0-1.1 | openSUSE-SU-2024:13037-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| openSUSE Leap 15.5 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| openSUSE Leap 15.4 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 115.0-r0 | — |
| Alpine v3.22 | firefox-esr | 115.0-r0 | — |
| Alpine v3.21 | firefox-esr | 115.0-r0 | — |
| Alpine v3.20 | firefox-esr | 115.0-r0 | — |
| Alpine v3.19 | firefox-esr | 115.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 115.0-r0 | — |
Advisories 8
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- USN-6201-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2023:2849-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2886-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13037-1 MozillaFirefox-115.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2850-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE 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-2023-1663 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 18, 2024