Google Android Display Driver drm_atomic_nonblocking_commit use after free

Summaryinfo

A vulnerability identified as critical has been detected in Google Android. This vulnerability affects the function drm_atomic_nonblocking_commit of the component Display Driver. This manipulation causes use after free. This vulnerability appears as CVE-2018-5845. The attack requires local access. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Google Android (Smartphone Operating System) (affected version not known). It has been declared as critical. Affected by this vulnerability is the function drm_atomic_nonblocking_commit of the component Display Driver. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A race condition in drm_atomic_nonblocking_commit() in the display driver can potentially lead to a Use After Free scenario in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel.

The bug was discovered 05/11/2018. The weakness was presented 06/06/2018 (Website). It is possible to read the advisory at source.android.com. This vulnerability is known as CVE-2018-5845 since 01/19/2018. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/15/2020). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 26 days. During that time the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem.

See VDB-117573, VDB-117574, VDB-119006 and VDB-119016 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

License

• free

Website

• Vendor: https://www.google.com/

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Entryinfo

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