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| author | J. Bruce Fields <bfields@redhat.com> | 2014-01-28 16:05:15 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-03-27 16:30:42 -0400 |
| commit | de3997a7eeb9ea286b15879fdf8a95aae065b4f7 (patch) | |
| tree | a32f094a1426deb839384bef0a4e60add30423ca /fs/nfsd/nfs4xdr.c | |
| parent | 1406b916f4a29d5f9660264a28ce609c8c77e7ae (diff) | |
| download | lwn-de3997a7eeb9ea286b15879fdf8a95aae065b4f7.tar.gz lwn-de3997a7eeb9ea286b15879fdf8a95aae065b4f7.zip | |
nfsd4: buffer-length check for SUPPATTR_EXCLCREAT
This was an omission from 8c18f2052e756e7d5dea712fc6e7ed70c00e8a39
"nfsd41: SUPPATTR_EXCLCREAT attribute".
Cc: Benny Halevy <bhalevy@primarydata.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 63f2395c57ed..668bfe1fcdec 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2483,6 +2483,8 @@ out_acl: 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); |