Bug 1597786 (CVE-2018-13097) - CVE-2018-13097 kernel: divide-by-zero in fs/f2fs/super.c
Summary: CVE-2018-13097 kernel: divide-by-zero in fs/f2fs/super.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-13097
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: 1597788 Engineering1597791
Blocks: Embargoed1597789
TreeView+ depends on / blocked
 
Reported: 2018-07-03 15:32 UTC by Laura Pardo
Modified: 2021-02-17 00:01 UTC (History)
47 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. 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.
Clone Of:
Environment:
Last Closed: 2018-07-11 08:30:40 UTC

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Description Laura Pardo 2018-07-03 15:32:05 UTC 
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 15:33:50 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1597788]
Comment 6 Vladis Dronov 2018-07-11 08:30:40 UTC 
Note:

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