Description
In unusual circumstances, an individual thread may outlive the thread's manager during shutdown. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox < 98.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 98 | 98 |
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 22.04 LTS | firefox | 1:1snap1-0ubuntu1 | — |
| Ubuntu 20.04 LTS | firefox | 98.0+build3-0ubuntu0.20.04.2 | USN-5321-2, USN-5321-1 |
| Ubuntu 18.04 LTS | firefox | 98.0+build3-0ubuntu0.18.04.2 | USN-5321-2, USN-5321-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 98.0-1.1 | openSUSE-SU-2024:11908-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 98.0-r0 | — |
| Alpine v3.23 | firefox +1 | 98.0-r0 | — |
| Alpine v3.22 | firefox +1 | 98.0-r0 | — |
| Alpine v3.21 | firefox +1 | 98.0-r0 | — |
| Alpine v3.20 | firefox | 98.0-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 98.0-r0 | — |
| Alpine v3.18 | firefox | 98.0-r0 | — |
| Alpine v3.17 | firefox | 98.0-r0 | — |
| Alpine v3.16 | firefox | 98.0-r0 | — |
Advisories 6
- USN-5321-2 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-5321-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:11908-1 MozillaFirefox-98.0-1.1 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-2023-0838 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 3, 2023
- WID-SEC-2022-1034 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 1, 2023