Commit:     c6387a8694506841389a6ac55175a8a984ae34e4
Parent:     90719dbeafdb40a15105ff0c899485b43c2a2a55
Author:     Paul Moore <[EMAIL PROTECTED]>
AuthorDate: Fri Mar 2 13:19:02 2007 -0800
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Fri Mar 2 20:37:36 2007 -0800

    [NetLabel]: Verify sensitivity level has a valid CIPSO mapping
    The current CIPSO engine has a problem where it does not verify that
    the given sensitivity level has a valid CIPSO mapping when the "std"
    CIPSO DOI type is used.  The end result is that bad packets are sent
    on the wire which should have never been sent in the first place.
    This patch corrects this problem by verifying the sensitivity level
    mapping similar to what is done with the category mapping.  This patch
    also changes the returned error code in this case to -EPERM to better
    match what the category mapping verification code returns.
    Signed-off-by: Paul Moore <[EMAIL PROTECTED]>
    Acked-by: James Morris <[EMAIL PROTECTED]>
    Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
 net/ipv4/cipso_ipv4.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 60aafb4..c976dd7 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -732,11 +732,12 @@ static int cipso_v4_map_lvl_hton(const struct 
cipso_v4_doi *doi_def,
                *net_lvl = host_lvl;
                return 0;
        case CIPSO_V4_MAP_STD:
-               if (host_lvl < doi_def->map.std->lvl.local_size) {
+               if (host_lvl < doi_def->map.std->lvl.local_size &&
+                   doi_def->map.std->lvl.local[host_lvl] < CIPSO_V4_INV_LVL) {
                        *net_lvl = doi_def->map.std->lvl.local[host_lvl];
                        return 0;
-               break;
+               return -EPERM;
        return -EINVAL;
@@ -771,7 +772,7 @@ static int cipso_v4_map_lvl_ntoh(const struct cipso_v4_doi 
                        *host_lvl = doi_def->map.std->lvl.cipso[net_lvl];
                        return 0;
-               break;
+               return -EPERM;
        return -EINVAL;
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