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Bug 1597782 - (CVE-2018-13096) CVE-2018-13096 kernel: out-of-bounds memory access in fs/f2fs/super.c
CVE-2018-13096 kernel: out-of-bounds memory access 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: 1597783 1597785
Blocks: 1597784
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Reported: 2018-07-03 11:24 EDT by Laura Pardo
Modified: 2018-10-09 09:21 EDT (History)
48 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. A denial of service, due to an out-of-bounds memory access, can occur upon encountering an abnormal bitmap size when mounting a crafted f2fs image.
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Last Closed: 2018-07-11 04:57:09 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Laura Pardo 2018-07-03 11:24:44 EDT 
An flaw was discovered in the F2FS filesystem code in fs/f2fs/super.c in the Linux kernel. A denial of service due to an out-of-bounds memory access can occur upon encountering an abnormal bitmap size when mounting a crafted f2fs image.

References:

https://bugzilla.kernel.org/show_bug.cgi?id=200167

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e34438c903b653daca2b2a7de95aed46226f8ed3
Comment 1 Laura Pardo 2018-07-03 11:26:34 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1597783]
Comment 6 Vladis Dronov 2018-07-11 04:57:09 EDT 
Note:

An F2FS filesystem is not shipped with any of the Red Hat products.
Comment 7 Justin M. Forbes 2018-09-11 16:22:19 EDT 
This is fixed for Fedora with the 4.18 rebases.
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