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nfsd4: buffer-length check for SUPPATTR_EXCLCREAT

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This was an omission from 8c18f2052e
"nfsd41: SUPPATTR_EXCLCREAT attribute".

Cc: Benny Halevy <bhalevy@primarydata.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2014-01-28 16:05:15 -05:00
parent 1406b916f4
commit de3997a7ee
1 changed files with 2 additions and 0 deletions
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2
fs/nfsd/nfs4xdr.c
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@ -2483,6 +2483,8 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
goto out;
}
if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
if ((buflen -= 16) < 0)
goto out_resource;
WRITE32(3);
WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);