Bug 1610102 (CVE-2018-14615) - CVE-2018-14615 kernel: Buffer overflow in fs/f2fs/inline.c:truncate_inline_inode() when unmounting a crafted f2fs image
Summary: CVE-2018-14615 kernel: Buffer overflow in fs/f2fs/inline.c:truncate_inline_in...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-14615
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: 1610103 1610104
Blocks: 1610105
TreeView+ depends on / blocked
 
Reported: 2018-07-31 01:47 UTC by Sam Fowler
Modified: 2019-09-29 14:46 UTC (History)
50 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An issue was discovered in the Linux kernel's F2FS filesystem code. A buffer overflow in truncate_inline_inode() in the fs/f2fs/inline.c function, when umounting a crafted f2fs image, can occur because a length value may be negative.
Clone Of:
Environment:
Last Closed: 2018-08-02 16:42:16 UTC


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Description Sam Fowler 2018-07-31 01:47:52 UTC
An issue was discovered in the Linux kernel in the F2FS filesystem code. There is a buffer overflow in truncate_inline_inode() in fs/f2fs/inline.c when umounting a crafted f2fs image, because a length value may be negative.

Upstream Bug:

https://bugzilla.kernel.org/show_bug.cgi?id=200421

Comment 1 Sam Fowler 2018-07-31 01:49:05 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1610103]

Comment 5 Vladis Dronov 2018-08-02 16:42:16 UTC
Note:

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

Comment 6 Justin M. Forbes 2018-09-11 20:48:51 UTC
This is fixed for Fedora with the 4.18 rebases.


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