CVE-2015-7891

Samsung fimg2d - FIMG2D_BITBLT_BLIT ioctl Concurrency Flaw

Severity Score

7.0

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una condición de carrera en la implementación ioctl en Samsung Graphics 2D Driver, también conocido como /dev/fimg2d, en dispositivos Samsung con Android L(5.0/5.1) permite que usuarios locales provoquen errores de memoria aprovechando la definición de las macros de bloqueo g2d_lock y g2d_unlock como no operativas o SVE-2015-4598.

The Samsung Graphics 2D driver (/dev/fimg2d) is accessible by unprivileged users/applications. It was found that the ioctl implementation for this driver contains a locking error which can lead to memory errors (such as use-after-free) due to a race condition.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-10-22 CVE Reserved
2015-10-28 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CAPEC

References (5)

URL	Tag	Source
http://www.securityfocus.com/bid/77335	Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=492	Issue Tracking

URL	Date	SRC
https://www.exploit-db.com/exploits/38557	2024-08-06
http://packetstormsecurity.com/files/134107/Samsung-Fimg2d-FIMG2D_BITBLT_BLIT-Ioctl-Concurrency-Flaw.html	2024-08-06

URL	Date	SRC

URL	Date	SRC
http://security.samsungmobile.com/smrupdate.html#SMR-OCT-2015	2017-08-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Samsung Search vendor "Samsung"		Samsung Mobile Search vendor "Samsung" for product "Samsung Mobile"				5.0 Search vendor "Samsung" for product "Samsung Mobile" and version "5.0"		-		Affected
Samsung Search vendor "Samsung"		Samsung Mobile Search vendor "Samsung" for product "Samsung Mobile"				5.1 Search vendor "Samsung" for product "Samsung Mobile" and version "5.1"		-		Affected