netfilter: nf_tables: nft_parse_register can return a negative value

Since commit 6e1acfa ("netfilter: nf_tables: validate registers coming from userspace.") nft_parse_register can return a negative value, but the function prototype is still returning an unsigned int. Fixes: 6e1acfa ("netfilter: nf_tables: validate registers coming from userspace.") Signed-off-by: Antoine Tenart <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
niw · Apr 12, 2022 · 6c6f9f3 · 6c6f9f3
1 parent 05ae2fb
commit 6c6f9f3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
@@ -9363,7 +9363,7 @@ int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest)
 }
 EXPORT_SYMBOL_GPL(nft_parse_u32_check);
 
-static unsigned int nft_parse_register(const struct nlattr *attr, u32 *preg)
+static int nft_parse_register(const struct nlattr *attr, u32 *preg)
 {
 	unsigned int reg;