Bug 1935170 (CVE-2020-0423) - CVE-2020-0423 kernel: use-after-free in binder_release_work of binder.c due to improper locking may lead to local escalation of privilege
Summary: CVE-2020-0423 kernel: use-after-free in binder_release_work of binder.c due t...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-0423
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1935171
Blocks: 1935173
TreeView+ depends on / blocked
 
Reported: 2021-03-04 13:40 UTC by Marian Rehak
Modified: 2021-03-04 15:21 UTC (History)
42 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-03-04 14:20:15 UTC
Embargoed:

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Description Marian Rehak 2021-03-04 13:40:15 UTC 
In binder_release_work of binder.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.

References:

https://source.android.com/security/bulletin/2020-10-01
Comment 1 Marian Rehak 2021-03-04 13:41:41 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1935171]
Comment 2 RaTasha Tillery-Smith 2021-03-04 14:04:11 UTC 
External References:

https://source.android.com/security/bulletin/2020-10-01
Comment 3 Justin M. Forbes 2021-03-04 15:21:34 UTC 
The android platform drivers are not enabled on Fedora.
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