CVE-2015-7891

Severity: high (CVSS 7.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-08-02 · updated 2026-06-17
Weakness: CWE-362

Description

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.

Affected products

Samsung Mobile: 5.0, 5.1

References

http://packetstormsecurity.com/files/134107/Samsung-Fimg2d-FIMG2D_BITBLT_BLIT-Ioctl-Concurrency-Flaw.html
http://security.samsungmobile.com/smrupdate.html#SMR-OCT-2015
http://www.securityfocus.com/bid/77335
https://bugs.chromium.org/p/project-zero/issues/detail?id=492
https://www.exploit-db.com/exploits/38557/
http://packetstormsecurity.com/files/134107/Samsung-Fimg2d-FIMG2D_BITBLT_BLIT-Ioctl-Concurrency-Flaw.html
http://security.samsungmobile.com/smrupdate.html#SMR-OCT-2015
http://www.securityfocus.com/bid/77335
https://bugs.chromium.org/p/project-zero/issues/detail?id=492
https://www.exploit-db.com/exploits/38557/

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