Integer signedness error in the decode_fh function of nfs3xdr.c in
Linux kernel before 2.4.21 allows remote attackers to cause a denial
of service (kernel panic) via a negative size value within XDR data of
an NFSv3 procedure call.
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BUGTRAQ:20030729 Remote Linux Kernel < 2.4.21 DoS in XDR routine.
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