CVE-2015-7891

Race condition in the ioctl implementation in the Samsung Graphics 2D driver (aka /dev/fimg2d) in...

7.0 HighPublic exploit

Race condition in the ioctl implementation in the Samsung Graphics 2D driver (aka /dev/fimg2d) in Samsung devices with Android L(5.0/5.1) allows local users to trigger memory errors by leveraging definition of g2d_lock and g2d_unlock lock macros as no-ops, aka SVE-2015-4598.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.67%Down 1.2 points since Feb 4, 2022

What each source reports

NVD Score used 7.0

Record: CVE-2015-7891
CVSS 3.0: 7.0 HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 4.4 MediumAV:L/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-362
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-7891
Updated: 2026-11-02

EUVDEUVD-2015-7789 No score

Record: EUVD-2015-7789
Updated: 2026-11-03

GitHub AdvisoriesGHSA-59gr-vjcr-m2p7 7.0

Race condition in the ioctl implementation in the Samsung Graphics 2D driver (aka /dev/fimg2d) in...

Record: GHSA-59gr-vjcr-m2p7
CVSS 3.0: 7.0 HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-362
Updated: 2026-11-02

Affected products

samsung mobile

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Samsung fimg2d - FIMG2D_BITBLT_BLIT ioctl Concurrency Flaw	2015-10-28

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-7891 is a high vulnerability (CVSS 7.0) in Samsung Mobile, published August 2, 2017. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.67%, the 52nd percentile. No source names a fixed version.