REDHAT-BUG-2349794
First published: Tue Mar 04 2025(Updated: )
On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. 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=2349794
Frequently Asked Questions
What is the severity of REDHAT-BUG-2349794?
The severity of REDHAT-BUG-2349794 is considered critical due to the potential type confusion from leftover memory bits.
How do I fix REDHAT-BUG-2349794?
To fix REDHAT-BUG-2349794, update to Firefox version 136 or later, or Firefox ESR version 115.21 or later, and version 128.8 or later.
Which versions of Firefox are affected by REDHAT-BUG-2349794?
Firefox versions below 136 and Firefox ESR versions below 115.21 and 128.8 are affected by REDHAT-BUG-2349794.
Can REDHAT-BUG-2349794 lead to exploitation?
Yes, REDHAT-BUG-2349794 can potentially allow an attacker to manipulate data types, leading to exploitation in vulnerable browsers.
What types of systems are impacted by REDHAT-BUG-2349794?
REDHAT-BUG-2349794 impacts 64-bit CPU systems running the affected versions of Firefox.
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