Bug 2068259 (CVE-2021-39648) - CVE-2021-39648 kernel: possible disclosure of memory due to a race condition in gadget_dev_desc_UDC_show() of configfs.c
Summary: CVE-2021-39648 kernel: possible disclosure of memory due to a race condition ...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-39648
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: 2068260
Blocks: 2068261
TreeView+ depends on / blocked
 
Reported: 2022-03-24 18:43 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-03-14 18:03 UTC (History)
48 users (show)

Fixed In Version: kernel 5.11 rc3
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-04-12 14:56:53 UTC
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2022-03-24 18:43:15 UTC 
In gadget_dev_desc_UDC_show of configfs.c, there is a possible disclosure of kernel heap memory due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-160822094References: Upstream kernel.

References:
https://source.android.com/security/bulletin/pixel/2021-12-01
https://android.googlesource.com/kernel/common/+/64e6bbfff52db4bf6785fab9cffab850b2de6870
Comment 1 Guilherme de Almeida Suckevicz 2022-03-24 18:44:01 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2068260]
Comment 2 Justin M. Forbes 2022-03-28 13:39:57 UTC 
This was fixed for Fedora with the 5.10.7 stable kernel updates.
Comment 4 Rohit Keshri 2022-04-12 05:28:32 UTC 
There was no shipped kernel version that was seen affected by this problem. These files are not built in our source code.
Comment 5 Product Security DevOps Team 2022-04-12 14:56:49 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-2021-39648
Note You need to log in before you can comment on or make changes to this bug.