CVE-2018-13889 - Use After Free

Severity

72%

Complexity

39%

Confidentiality

165%

In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Heap memory was accessed after it was freed

In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, Heap memory was accessed after it was freed

CVSS 3.0 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Demo Examples

Use After Free

CWE-416

The following example demonstrates the weakness.


               
}
free(buf3R2);

Use After Free

CWE-416

The following code illustrates a use after free error:


               
}
free(ptr);
logError("operation aborted before commit", ptr);

When an error occurs, the pointer is immediately freed. However, this pointer is later incorrectly used in the logError function.

Overview

First reported 6 years ago

2019-02-11 15:29:00

Last updated 6 years ago

2019-02-12 15:11:00

Affected Software

Google Android Operating System

References

106496

Third Party Advisory, VDB Entry

https://www.codeaurora.org/security-bulletin/2019/01/07/january-2019-code-aurora-security-bulletin

Patch, Third Party Advisory

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