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Bug 1558697 - (CVE-2018-8822) CVE-2018-8822 kernel: Memory corruption in ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c
CVE-2018-8822 kernel: Memory corruption in ncp_read_kernel function in fs/ncp...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20180320,repor...
: Security
Depends On: 1558698
Blocks: 1558699
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Reported: 2018-03-20 16:13 EDT by Pedro Sampaio
Modified: 2018-03-26 14:47 EDT (History)
46 users (show)

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Doc Text:
Incorrect buffer length handling was found in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux kernel, which could be exploited by malicious NCPFS servers to crash the kernel or possibly execute an arbitrary code.
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Environment:
Last Closed: 2018-03-22 12:30:23 EDT
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Regression: ---
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Pedro Sampaio 2018-03-20 16:13:23 EDT 
Incorrect buffer length handling was found in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux kernel, which could be exploited by malicious NCPFS servers to crash the kernel or possibly execute an arbitrary code.

References:

https://www.mail-archive.com/netdev@vger.kernel.org/msg223373.html

A suggested fix:

https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit/?id=4c41aa24baa4ed338241d05494f2c595c885af8f
Comment 1 Pedro Sampaio 2018-03-20 16:14:34 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1558698]
Comment 2 Justin M. Forbes 2018-03-20 17:21:47 EDT 
NCPFS is not enabled in Fedora any longer it is scheduled for removal from the upstream kernel.
Comment 5 Vladis Dronov 2018-03-22 12:30:23 EDT 
Notes:

See upstream commita 1bb8155080c6 and 5d8515bc2321:

      The networking IPX and the ncpfs filesystem are moved into the staging
      tree, as they are on their way out of the kernel due to lack of use
      anymore.
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