Linux kernel xfs _xfs_buf_find NULL pointer dereference

2013.03.05

Credit: P J P

Risk: Medium

Local: Yes

Remote: No

CVE: CVE-2013-1819

CWE: CWE-20

CVSS Base Score: 4.6/10

Impact Subscore: 6.4/10

Exploitability Subscore: 3.9/10

Exploit range: Local

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

Linux kernel built with support for XFS file system is vulnerable to a NULL
pointer dereference flaw. This occurs while accessing blocks beyond the end
of the file system, possibly on a corrupted device.
A user able to mount the file system could use this flaw to crash the kernel, resulting in DoS.
Upstream fix:
-------------
-> https://git.kernel.org/linus/eb178619f930fa2ba2348de332a1ff1c66a31424
Reference:
----------
-> https://bugzilla.redhat.com/show_bug.cgi?id=918009
Thank you.

References:

https://git.kernel.org/linus/eb178619f930fa2ba2348de332a1ff1c66a31424

https://bugzilla.redhat.com/show_bug.cgi?id=918009

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Linux kernel xfs _xfs_buf_find NULL pointer dereference

References:

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