diff options
author | Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> | 2013-06-26 13:37:02 +0200 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-06-27 19:11:11 +0200 |
commit | 783a972f6acd680bed92fac36c5388d15620e754 (patch) | |
tree | 1a95b955f5f83f84711c9dec39cee2ac6d251308 /src/expr/lookup.c | |
parent | 34caf0add23aab075c2bbe1a99927c081014cadd (diff) |
expr: xml: registers must be <= NFT_REG_MAX
With this patch, all expressions validate that registers are <= NFT_REG_MAX.
Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/expr/lookup.c')
-rw-r--r-- | src/expr/lookup.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/expr/lookup.c b/src/expr/lookup.c index 0ae93ce..ecc07cb 100644 --- a/src/expr/lookup.c +++ b/src/expr/lookup.c @@ -204,6 +204,11 @@ nft_rule_expr_lookup_xml_parse(struct nft_rule_expr *e, char *xml) return -1; } + if (tmp > NFT_REG_MAX) { + mxmlDelete(tree); + return -1; + } + lookup->sreg = (uint32_t)tmp; e->flags |= (1 << NFT_EXPR_LOOKUP_SREG); @@ -217,6 +222,11 @@ nft_rule_expr_lookup_xml_parse(struct nft_rule_expr *e, char *xml) return -1; } + if (tmp > NFT_REG_MAX) { + mxmlDelete(tree); + return -1; + } + lookup->dreg = (uint32_t)tmp; e->flags |= (1 << NFT_EXPR_LOOKUP_DREG); } |