CVE-2020-0009

Severity: medium (CVSS 5.5 v3.1)
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: 2020-01-08 · updated 2026-06-17
Weakness: CWE-276

Description

In calc_vm_may_flags of ashmem.c, there is a possible arbitrary write to shared memory due to a permissions bypass. This could lead to local escalation of privilege by corrupting memory shared between processes, with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-142938932

Affected products

Debian Linux: 8.0
Android: all versions

References

http://packetstormsecurity.com/files/155903/Android-ashmem-Read-Only-Bypasses.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://source.android.com/security/bulletin/2020-01-01
http://packetstormsecurity.com/files/155903/Android-ashmem-Read-Only-Bypasses.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://source.android.com/security/bulletin/2020-01-01

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