Race Condition in Samsung Graphics 2D Driver for Android Devices
CVE-2015-7891

7HIGH

Key Information:

Vendor

Samsung
Status
Samsung Mobile
Vendor
CVE Published:
2 August 2017

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2015-7891?

A race condition exists in the ioctl implementation of the Samsung Graphics 2D driver found in devices running Android L (5.0/5.1). This vulnerability arises due to the definition of g2d_lock and g2d_unlock macros functioning as no-operations, potentially allowing local users to exploit these flaws to trigger memory errors. This issue emphasizes the importance of robust implementation practices to prevent concurrency flaws that can be easily exploited by attackers.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2015-7891 - Proof of Concept

References

http://www.securityfocus.com/bid/77335
vdb-entryx_refsource_BID
https://bugs.chromium.org/p/project-zero/issues/detail?id...
x_refsource_MISC
https://www.exploit-db.com/exploits/38557/
exploitx_refsource_EXPLOIT-DB

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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