netfilter: nf_tables: do not compare internal table flags on updates

jira VULN-4986
cve CVE-2024-27065
commit-author Pablo Neira Ayuso <pablo@netfilter.org>
commit 4a0e7f2

Restore skipping transaction if table update does not modify flags.

Fixes: 179d9ba ("netfilter: nf_tables: fix table flag updates")
	Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit 4a0e7f2)
	Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>

Author: CIQ Kernel Automation

net/netfilter/nf_tables_api.c

@@ -1156,7 +1156,7 @@ static int nf_tables_updtable(struct nft_ctx *ctx)
 	if (flags & ~NFT_TABLE_F_MASK)
 		return -EOPNOTSUPP;
 
-	if (flags == ctx->table->flags)
+	if (flags == (ctx->table->flags & NFT_TABLE_F_MASK))
 		return 0;
 
 	if ((nft_table_has_owner(ctx->table) &&