Bug 2018212 (CVE-2021-0938) - CVE-2021-0938 kernel: possible bypass of defense in depth due to uninitialized data in memzero_explicit() of compiler-clang.h
Summary: CVE-2021-0938 kernel: possible bypass of defense in depth due to uninitialize...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-0938
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2018213
Blocks: 2018214
TreeView+ depends on / blocked
 
Reported: 2021-10-28 14:13 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-03-14 12:11 UTC (History)
45 users (show)

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Last Closed: 2021-11-02 16:34:53 UTC
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Description Guilherme de Almeida Suckevicz 2021-10-28 14:13:49 UTC 
In memzero_explicit of compiler-clang.h, there is a possible bypass of defense in depth due to uninitialized data. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-171418586References: Upstream kernel.

References:
https://source.android.com/security/bulletin/pixel/2021-10-01
https://android.googlesource.com/kernel/common/+/b207caff4176
Comment 1 Guilherme de Almeida Suckevicz 2021-10-28 14:14:37 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2018213]
Comment 2 Justin M. Forbes 2021-11-02 21:03:02 UTC 
This was fixed for Fedora with the 5.9.15 stable kernel updates.
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