diff options
| author | Florian Westphal <fw@strlen.de> | 2022-02-28 06:22:22 +0100 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2022-03-01 11:50:35 +0100 |
| commit | c3873070247d9e3c7a6b0cf9bf9b45e8018427b1 (patch) | |
| tree | da192a08d0f995eaa2854d5033279ace339f2bcf /include | |
| parent | 2e78855d311c401083df9776aa450d32d716e83e (diff) | |
| download | linux-c3873070247d9e3c7a6b0cf9bf9b45e8018427b1.tar.gz | |
netfilter: nf_queue: fix possible use-after-free
Eric Dumazet says:
The sock_hold() side seems suspect, because there is no guarantee
that sk_refcnt is not already 0.
On failure, we cannot queue the packet and need to indicate an
error. The packet will be dropped by the caller.
v2: split skb prefetch hunk into separate change
Fixes: 271b72c7fa82c ("udp: RCU handling for Unicast packets.")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netfilter/nf_queue.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h index 9eed51e920e8..980daa6e1e3a 100644 --- a/include/net/netfilter/nf_queue.h +++ b/include/net/netfilter/nf_queue.h @@ -37,7 +37,7 @@ void nf_register_queue_handler(const struct nf_queue_handler *qh); void nf_unregister_queue_handler(void); void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict); -void nf_queue_entry_get_refs(struct nf_queue_entry *entry); +bool nf_queue_entry_get_refs(struct nf_queue_entry *entry); void nf_queue_entry_free(struct nf_queue_entry *entry); static inline void init_hashrandom(u32 *jhash_initval) |