diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-06-06 16:32:44 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-06-07 00:43:44 +0200 |
| commit | 08e42a0d3ad30f276f9597b591f975971a1b0fcf (patch) | |
| tree | 2180017299fcf71159aa00adbbc24799b056747c | |
| parent | 24e227896bbf003165e006732dccb3516f87f88e (diff) | |
netfilter: nf_tables: out-of-bound check in chain blob
Add current size of rule expressions to the boundary check.
Fixes: 2c865a8a28a1 ("netfilter: nf_tables: add rule blob layout")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 3445b8e1f462..0519d45ede6b 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -9007,7 +9007,7 @@ static int nf_tables_commit_chain_prepare(struct net *net, struct nft_chain *cha continue; } - if (WARN_ON_ONCE(data + expr->ops->size > data_boundary)) + if (WARN_ON_ONCE(data + size + expr->ops->size > data_boundary)) return -ENOMEM; memcpy(data + size, expr, expr->ops->size); |