5.10-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit 393c31dd27f83adb06b07a1b5f0a5b8966a0f01e ]
Signed-off-by: Chuck Lever chuck.lever@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfsd/nfs4xdr.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 7dc6b79e51fd0..979f1d384cd0f 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -374,11 +374,16 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, iattr->ia_valid |= ATTR_UID; } if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { - READ_BUF(4); - dummy32 = be32_to_cpup(p++); - READ_BUF(dummy32); - READMEM(buf, dummy32); - if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) + u32 length; + + if (xdr_stream_decode_u32(argp->xdr, &length) < 0) + return nfserr_bad_xdr; + p = xdr_inline_decode(argp->xdr, length); + if (!p) + return nfserr_bad_xdr; + status = nfsd_map_name_to_gid(argp->rqstp, (char *)p, length, + &iattr->ia_gid); + if (status) return status; iattr->ia_valid |= ATTR_GID; }