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Bug 1597786 - (CVE-2018-13097) CVE-2018-13097 kernel: divide-by-zero in fs/f2fs/super.c
CVE-2018-13097 kernel: divide-by-zero in fs/f2fs/super.c
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20180622,reported=2...
: Security
Depends On: 1597788 1597791
Blocks: 1597789
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Reported: 2018-07-03 11:32 EDT by Laura Pardo
Modified: 2018-07-16 14:54 EDT (History)
47 users (show)

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Doc Text:
A flaw was discovered in the F2FS filesystem code in fs/f2fs/super.c in the Linux kernel. An out-of-bounds read or a divide-by-zero error for an incorrect user_block_count in a corrupted f2fs image can lead to a denial of service.
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Last Closed: 2018-07-11 04:30:40 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Laura Pardo 2018-07-03 11:32:05 EDT 
An flaw was discovered in the F2FS filesystem code in fs/f2fs/super.c in the Linux kernel. An out-of-bounds read or a divide-by-zero error for an incorrect user_block_count in a corrupted f2fs image can lead to a denial of service.

References:

https://bugzilla.kernel.org/show_bug.cgi?id=200171

A suggested upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?h=f2fs-dev&id=78bbd741456e31e0acb983283a8d3993ba859c15
Comment 1 Laura Pardo 2018-07-03 11:33:50 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1597788]
Comment 6 Vladis Dronov 2018-07-11 04:30:40 EDT 
Note:

An F2FS filesystem is not shipped with any of the Red Hat products.
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