Bug 2018229 (CVE-2021-0936) - CVE-2021-0936 kernel: possible memory corruption due to a use-after-free in acc_read() in f_accessory.c
Summary: CVE-2021-0936 kernel: possible memory corruption due to a use-after-free in a...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-0936
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: 2018230
Blocks: 2018231
TreeView+ depends on / blocked
 
Reported: 2021-10-28 14:50 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-11-02 16:10 UTC (History)
45 users (show)

Fixed In Version:
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A use after free flaw in the Linux kernel's Gadget Function Driver for Android USB accessories functionality was found. A local user could use this flaw to crash the system or escalate their privileges on the system.
Clone Of:
Environment:
Last Closed: 2021-11-02 14:08:39 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-10-28 14:50:34 UTC 
In acc_read of f_accessory.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173789633References: Upstream kernel.

https://source.android.com/security/bulletin/pixel/2021-10-01
https://android.googlesource.com/kernel/common/+/0e3db17d01c9
Comment 1 Guilherme de Almeida Suckevicz 2021-10-28 14:51:11 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2018230]
Comment 3 Product Security DevOps Team 2021-11-02 14:08:39 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-0936
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