Bug 1597782 (CVE-2018-13096) - CVE-2018-13096 kernel: out-of-bounds memory access in fs/f2fs/super.c
Summary: CVE-2018-13096 kernel: out-of-bounds memory access in fs/f2fs/super.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-13096
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1597783 Engineering1597785
Blocks: Embargoed1597784
TreeView+ depends on / blocked
 
Reported: 2018-07-03 15:24 UTC by Laura Pardo
Modified: 2021-02-17 00:01 UTC (History)
48 users (show)

Fixed In Version:
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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.
Clone Of:
Environment:
Last Closed: 2018-07-11 08:57:09 UTC

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Description Laura Pardo 2018-07-03 15:24:44 UTC 
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 15:26:34 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1597783]
Comment 6 Vladis Dronov 2018-07-11 08:57:09 UTC 
Note:

An F2FS filesystem is not shipped with any of the Red Hat products.
Comment 7 Justin M. Forbes 2018-09-11 20:22:19 UTC 
This is fixed for Fedora with the 4.18 rebases.
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