Bug 1558697 (CVE-2018-8822) - CVE-2018-8822 kernel: Memory corruption in ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c
Summary: CVE-2018-8822 kernel: Memory corruption in ncp_read_kernel function in fs/ncp...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-8822
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: 1558698
Blocks: 1558699
TreeView+ depends on / blocked
 
Reported: 2018-03-20 20:13 UTC by Pedro Sampaio
Modified: 2021-06-10 15:26 UTC (History)
46 users (show)

Fixed In Version:
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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.
Clone Of:
Environment:
Last Closed: 2018-03-22 16:30:23 UTC
Embargoed:

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Description Pedro Sampaio 2018-03-20 20:13:23 UTC 
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 20:14:34 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1558698]
Comment 2 Justin M. Forbes 2018-03-20 21:21:47 UTC 
NCPFS is not enabled in Fedora any longer it is scheduled for removal from the upstream kernel.
Comment 5 Vladis Dronov 2018-03-22 16:30:23 UTC 
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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