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| author | J. Bruce Fields <bfields@redhat.com> | 2014-01-28 16:05:15 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-06 07:59:27 -0700 |
| commit | d37c37d2d4d8fb671d7775d9760afde90a435cbd (patch) | |
| tree | 0818de636f9d2ca576b34944d139d0aba35131d4 /fs | |
| parent | 6cd9ecd59521d89c087c561680ae272dcc3a5059 (diff) | |
| download | lwn-d37c37d2d4d8fb671d7775d9760afde90a435cbd.tar.gz lwn-d37c37d2d4d8fb671d7775d9760afde90a435cbd.zip | |
nfsd4: buffer-length check for SUPPATTR_EXCLCREAT
commit de3997a7eeb9ea286b15879fdf8a95aae065b4f7 upstream.
This was an omission from 8c18f2052e756e7d5dea712fc6e7ed70c00e8a39
"nfsd41: SUPPATTR_EXCLCREAT attribute".
Cc: Benny Halevy <bhalevy@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -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); |