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When airoha_ppe_foe_verify_entry() is called with hash >= ppe_num_entries/2, it writes beyond the allocated buffer, causing heap buffer overflow and potential kernel crash. Signed-off-by: Wayen Yan --- drivers/net/ethernet/airoha/airoha_ppe.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c index 5c9dff6bcc..8fb8ecf909 100644 --- a/drivers/net/ethernet/airoha/airoha_ppe.c +++ b/drivers/net/ethernet/airoha/airoha_ppe.c @@ -1578,7 +1578,8 @@ int airoha_ppe_init(struct airoha_eth *eth) return -ENOMEM; } - ppe->foe_check_time = devm_kzalloc(eth->dev, ppe_num_entries, + ppe->foe_check_time = devm_kzalloc(eth->dev, + ppe_num_entries * sizeof(*ppe->foe_check_time), GFP_KERNEL); if (!ppe->foe_check_time) return -ENOMEM; -- 2.51.0