| Severity |
|
| Remote |
|
| Type |
| + |
Arbitrary code execution |
|
| Description |
| + |
A security issue has been found in Firefox before version 91 and Thunderbird before version 78.13. Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. |
|
| References |
| + |
https://www.mozilla.org/security/advisories/mfsa2021-33/ |
| + |
https://www.mozilla.org/security/advisories/mfsa2021-35/ |
| + |
https://bugzilla.mozilla.org/show_bug.cgi?id=1720031 |
|
| Notes |
|