Bug 1995570 (CVE-2021-3736) - CVE-2021-3736 kernel: uninitialized kernel stack may lead to information disclosure
Summary: CVE-2021-3736 kernel: uninitialized kernel stack may lead to information disc...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-3736
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2019859
Blocks: 1986387
TreeView+ depends on / blocked
 
Reported: 2021-08-19 12:35 UTC by Marian Rehak
Modified: 2022-09-08 15:03 UTC (History)
48 users (show)

Fixed In Version:
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Doc Text:
A flaw was found in the Linux kernel. A memory leak problem was found in mbochs_ioctl in samples/vfio-mdev/mbochs.c in Virtual Function I/O (VFIO) Mediated devices. This flaw could allow a local attacker to leak internal kernel information.
Clone Of:
Environment:
Last Closed: 2021-09-03 11:50:12 UTC
Embargoed:

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Description Marian Rehak 2021-08-19 12:35:45 UTC 
A memory leak problem was found in mbochs_ioctl in samples/vfio-mdev/mbochs.c in Virtual Function I/O (VFIO) Mediated devices.  This flaw could allow a local attacker to leak internal kernel information.
Comment 4 Rohit Keshri 2021-11-03 13:59:06 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2019859]
Comment 5 Justin M. Forbes 2021-11-05 15:48:24 UTC 
This was fixed for Fedora with the 5.14.6 stable kernel updates.
Comment 6 Gianluca Gabrielli 2021-11-09 11:00:41 UTC 
Could you confirm if the fixing commit is de5494af4815a4c9328536c72741229b7de88e7f ?
Comment 7 Justin M. Forbes 2021-11-28 14:18:17 UTC 
Yes, that is the correct commit from linus' tree.
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