From be0bae0ad31b0adb506f96de083f52a2bd0d4fbf Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Thu, 7 Mar 2024 14:49:08 +0100 Subject: expr: Respect data_len when setting attributes With attr_policy in place, data_len has an upper boundary but it may be lower than the attribute's storage area in which case memcpy() would read garbage. Signed-off-by: Phil Sutter --- src/expr/counter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/expr/counter.c') diff --git a/src/expr/counter.c b/src/expr/counter.c index 2c6f2a7..cef9119 100644 --- a/src/expr/counter.c +++ b/src/expr/counter.c @@ -35,10 +35,10 @@ nftnl_expr_counter_set(struct nftnl_expr *e, uint16_t type, switch(type) { case NFTNL_EXPR_CTR_BYTES: - memcpy(&ctr->bytes, data, sizeof(ctr->bytes)); + memcpy(&ctr->bytes, data, data_len); break; case NFTNL_EXPR_CTR_PACKETS: - memcpy(&ctr->pkts, data, sizeof(ctr->pkts)); + memcpy(&ctr->pkts, data, data_len); break; } return 0; -- cgit v1.2.3