Bug 1711194 (CVE-2019-10142) - CVE-2019-10142 kernel: integer overflow in ioctl handling of fsl hypervisor
Summary: CVE-2019-10142 kernel: integer overflow in ioctl handling of fsl hypervisor
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-10142
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: 1711195
Blocks: 1711196
TreeView+ depends on / blocked
 
Reported: 2019-05-17 07:52 UTC by Marian Rehak
Modified: 2021-02-16 21:56 UTC (History)
43 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-06-10 10:55:37 UTC
Embargoed:

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Description Marian Rehak 2019-05-17 07:52:36 UTC 
A flaw was found in the Linux kernels freescale hypervisor manager implementation.  A parameter passed via to an ioctl was incorrectly validated and used in size calculations for page size calculation, 

The "param.count" value is a u64 from the user. The code later assumes that param.count is at least one, leading to ZERO_SIZE_PTR dereference in case it is not. Also the addition can have an integer overflow which leads to allocating fewer "pages" array than required.


Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6a024330650e24556b8a18cc654ad00cfecf6c6c
Comment 1 Marian Rehak 2019-05-17 07:52:50 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1711195]
Comment 5 Fedora Update System 2019-05-25 03:35:24 UTC 
kernel-5.0.17-200.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Marian Rehak 2019-07-30 11:11:59 UTC 
Acknowledgments:

Name: Murray McAllister
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