REDHAT-BUG-2349786: Use After Free
First published: Tue Mar 04 2025(Updated: )
It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Firefox | <136 | |
| Firefox ESR | <115.21<128.8 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2025:2359
- https://access.redhat.com/errata/RHSA-2025:2452
- https://access.redhat.com/errata/RHSA-2025:2481
- https://access.redhat.com/errata/RHSA-2025:2480
- https://access.redhat.com/errata/RHSA-2025:2479
- https://access.redhat.com/errata/RHSA-2025:2485
- https://access.redhat.com/errata/RHSA-2025:2484
- https://access.redhat.com/errata/RHSA-2025:2486
- https://access.redhat.com/errata/RHSA-2025:2699
- https://access.redhat.com/errata/RHSA-2025:2708
- https://bugzilla.redhat.com/show_bug.cgi?id=2349786
Frequently Asked Questions
What is the severity of REDHAT-BUG-2349786?
REDHAT-BUG-2349786 has the potential to lead to a crash in affected versions of Firefox and Firefox ESR, indicating a high severity due to the risk of a use-after-free vulnerability.
How do I fix REDHAT-BUG-2349786?
To fix REDHAT-BUG-2349786, update your Firefox or Firefox ESR to the latest version beyond 136 for Firefox and beyond 115.21 or 128.8 for Firefox ESR.
Which versions are affected by REDHAT-BUG-2349786?
REDHAT-BUG-2349786 affects Firefox versions below 136 and Firefox ESR versions below 115.21 and below 128.8.
Can REDHAT-BUG-2349786 be exploited remotely?
Yes, REDHAT-BUG-2349786 can potentially be exploited remotely through WebTransport connections in the affected versions.
Is there a workaround for REDHAT-BUG-2349786?
Currently, the best mitigation for REDHAT-BUG-2349786 is to upgrade to the patched versions as there are no official workarounds available.
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