[PATCH v2 2/2] net: pcs: rzn1-miic: Verify port number from dtb
From: Kyle Hendry via B4 Relay <devnull+khendry.reliablecontrols.com@kernel.org>
Date: 2026-09-01 15:26:02
Also in:
b4-sent, linux-renesas-soc, lkml
Subsystem:
ethernet phy library, networking drivers, renesas rz/n1 a5psw switch driver, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Clément Léger, Linus Torvalds
From: Kyle Hendry <redacted> Add check to make sure port number is in range before writing to dt_val array Signed-off-by: Kyle Hendry <redacted> --- drivers/net/pcs/pcs-rzn1-miic.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/net/pcs/pcs-rzn1-miic.c b/drivers/net/pcs/pcs-rzn1-miic.c
index c50b65d064fa..ebd73ed63896 100644
--- a/drivers/net/pcs/pcs-rzn1-miic.c
+++ b/drivers/net/pcs/pcs-rzn1-miic.c@@ -692,6 +692,11 @@ static int miic_parse_dt(struct miic *miic, u32 *mode_cfg) if (of_property_read_u32(conv, "reg", &port)) continue; + if (port < miic->of_data->miic_port_start || port > miic->of_data->miic_port_max) { + dev_err(miic->dev, "Port number out of range: %d\n", port); + continue; + } + if (of_property_read_u32(conv, "renesas,miic-input", &conf)) continue;
--
2.43.0