CVE-2016-5255
Publication date 3 August 2016
Last updated 25 August 2025
Ubuntu priority
Description
Use-after-free vulnerability in the js::PreliminaryObjectArray::sweep function in Mozilla Firefox before 48.0 allows remote attackers to execute arbitrary code via crafted JavaScript that is mishandled during incremental garbage collection.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | 16.04 LTS xenial |
Fixed 48.0+build2-0ubuntu0.16.04.1
|
| 14.04 LTS trusty |
Fixed 48.0+build2-0ubuntu0.14.04.1
|
|
| thunderbird | 16.04 LTS xenial |
Not affected
|
| 14.04 LTS trusty | Not in release | |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
8.8 · High
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-3044-1
- Firefox vulnerabilities
- 5 August 2016