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authorPaul Moore <paul.moore@hp.com>2007-01-05 15:08:22 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2007-01-09 00:30:01 -0800
commit2a2f11c227bdf292b3a2900ad04139d301b56ac4 (patch)
treee94ced56b21fa9258dc6d8c9d8b1e1a3f6e190a1 /net/netlabel
parent797951200679f1d5ea12a2e58cc7bdbc2848764c (diff)
downloadlinux-2a2f11c227bdf292b3a2900ad04139d301b56ac4.tar.gz
NetLabel: correct CIPSO tag handling when adding new DOI definitions
The current netlbl_cipsov4_add_common() function has two problems which are fixed with this patch. The first is an off-by-one bug where it is possibile to overflow the doi_def->tags[] array. The second is a bug where the same doi_def->tags[] array was not always fully initialized, which caused sporadic failures. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'net/netlabel')
-rw-r--r--net/netlabel/netlabel_cipso_v4.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/netlabel/netlabel_cipso_v4.c b/net/netlabel/netlabel_cipso_v4.c
index 4afc75f9e37..73e0ff469bf 100644
--- a/net/netlabel/netlabel_cipso_v4.c
+++ b/net/netlabel/netlabel_cipso_v4.c
@@ -130,12 +130,12 @@ static int netlbl_cipsov4_add_common(struct genl_info *info,
nla_for_each_nested(nla, info->attrs[NLBL_CIPSOV4_A_TAGLST], nla_rem)
if (nla->nla_type == NLBL_CIPSOV4_A_TAG) {
- if (iter > CIPSO_V4_TAG_MAXCNT)
+ if (iter >= CIPSO_V4_TAG_MAXCNT)
return -EINVAL;
doi_def->tags[iter++] = nla_get_u8(nla);
}
- if (iter < CIPSO_V4_TAG_MAXCNT)
- doi_def->tags[iter] = CIPSO_V4_TAG_INVALID;
+ while (iter < CIPSO_V4_TAG_MAXCNT)
+ doi_def->tags[iter++] = CIPSO_V4_TAG_INVALID;
return 0;
}