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TITLE:
Linux Kernel GFS2 "gfs2_fallocate()" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA45193

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45193/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45193

RELEASE DATE:
2011-07-14

DISCUSS ADVISORY:
http://secunia.com/advisories/45193/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/45193/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=45193

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to the "gfs2_fallocate()" function in
fs/gfs2/file.c not properly ensuring that allocated bytes are aligned,
which can be exploited to cause a "BUG()".

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Disclosed in a GIT commit.

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6905d9e4dda6112f007e9090bca80507da158e63

OTHER REFERENCES:
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DEEP LINKS:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
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EXTENDED SOLUTION:
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EXPLOIT:
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About:
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