The deprecated helper strcpy() performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. The safe replacement is strscpy() [1]. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1] Signed-off-by: Hongbo Li <lihongbo22@xxxxxxxxxx> --- net/netfilter/xt_recent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c index 588a5e6ad899..06af3afa1d32 100644 --- a/net/netfilter/xt_recent.c +++ b/net/netfilter/xt_recent.c @@ -400,7 +400,7 @@ static int recent_mt_check(const struct xt_mtchk_param *par, t->nstamps_max_mask = nstamp_mask; memcpy(&t->mask, &info->mask, sizeof(t->mask)); - strcpy(t->name, info->name); + strscpy(t->name, info->name, sizeof(t->name)); INIT_LIST_HEAD(&t->lru_list); for (i = 0; i < ip_list_hash_size; i++) INIT_LIST_HEAD(&t->iphash[i]); -- 2.34.1
