CVE-2016-5255

Published: Aug 5, 2016Modified: May 6, 2026

8.8

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: Mozilla: Firefox

Mozilla

1 product

Firefox

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Up to 47.0.1

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (16)

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html

Source: security@mozilla.org

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html

Source: security@mozilla.org

http://www.mozilla.org/security/announce/2016/mfsa2016-71.html

Source: security@mozilla.org

Vendor Advisory

http://www.securityfocus.com/bid/92260

Source: security@mozilla.org

http://www.securitytracker.com/id/1036508

Source: security@mozilla.org

http://www.ubuntu.com/usn/USN-3044-1

Source: security@mozilla.org

https://bugzilla.mozilla.org/show_bug.cgi?id=1212356

Source: security@mozilla.org

Issue TrackingPermissions Required

https://security.gentoo.org/glsa/201701-15

Source: security@mozilla.org

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html