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sunrpc: return error if unsupported enctype or cksumtype is encountered

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Return an error from gss_import_sec_context_kerberos if the
negotiated context contains encryption or checksum types not
supported by the kernel code.

This fixes an Oops because success was assumed and later code found
no internal_ctx_id.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Kevin Coffman 2007-11-09 18:42:09 -05:00 committed by Trond Myklebust
parent ffc40f5692
commit ef338bee3f
2 changed files with 7 additions and 2 deletions
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8
net/sunrpc/auth_gss/gss_krb5_mech.c
View File

@ -147,13 +147,17 @@ gss_import_sec_context_kerberos(const void *p,
p = simple_get_bytes(p, end, &tmp, sizeof(tmp));
if (IS_ERR(p))
goto out_err_free_ctx;
if (tmp != SGN_ALG_DES_MAC_MD5)
if (tmp != SGN_ALG_DES_MAC_MD5) {
p = ERR_PTR(-ENOSYS);
goto out_err_free_ctx;
}
p = simple_get_bytes(p, end, &tmp, sizeof(tmp));
if (IS_ERR(p))
goto out_err_free_ctx;
if (tmp != SEAL_ALG_DES)
if (tmp != SEAL_ALG_DES) {
p = ERR_PTR(-ENOSYS);
goto out_err_free_ctx;
}
p = simple_get_bytes(p, end, &ctx->endtime, sizeof(ctx->endtime));
if (IS_ERR(p))
goto out_err_free_ctx;

1
net/sunrpc/auth_gss/gss_krb5_seal.c
View File

@ -83,6 +83,7 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
u32 seq_send;
dprintk("RPC: gss_krb5_seal\n");
BUG_ON(ctx == NULL);
now = get_seconds();