CVE-2015-6640

Severity: high (CVSS 7.8 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: none known
Published: 2016-01-06 · updated 2026-06-17
Weakness: CWE-264

Description

The prctl_set_vma_anon_name function in kernel/sys.c in Android before 5.1.1 LMY49F and 6.0 before 2016-01-01 does not ensure that only one vma is accessed in a certain update action, which allows attackers to gain privileges or cause a denial of service (vma list corruption) via a crafted application, aka internal bug 20017123.

Affected products

Android: 4.4.4, 5.0, 5.1.1, 6.0

References

http://source.android.com/security/bulletin/2016-01-01.html
http://www.securitytracker.com/id/1034592
https://android.googlesource.com/kernel%2Fcommon/+/69bfe2d957d903521d32324190c2754cb073be15
http://source.android.com/security/bulletin/2016-01-01.html
http://www.securitytracker.com/id/1034592
https://android.googlesource.com/kernel%2Fcommon/+/69bfe2d957d903521d32324190c2754cb073be15

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