On 11/9/23 10:31, Johan Hovold wrote:
The PMIC GLINK altmode driver currently supports at most two ports. Fix the incomplete port sanity check on notifications to avoid accessing and corrupting memory beyond the port array if we ever get a notification for an unsupported port. Fixes: 080b4e24852b ("soc: qcom: pmic_glink: Introduce altmode support") Cc: stable@xxxxxxxxxxxxxxx # 6.3 Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx> --- drivers/soc/qcom/pmic_glink_altmode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/soc/qcom/pmic_glink_altmode.c b/drivers/soc/qcom/pmic_glink_altmode.c index 974c14d1e0bf..561d6ba005f4 100644 --- a/drivers/soc/qcom/pmic_glink_altmode.c +++ b/drivers/soc/qcom/pmic_glink_altmode.c @@ -285,7 +285,7 @@ static void pmic_glink_altmode_sc8180xp_notify(struct pmic_glink_altmode *altmodsvid = mux == 2 ? USB_TYPEC_DP_SID : 0; - if (!altmode->ports[port].altmode) {+ if (port >= ARRAY_SIZE(altmode->ports) || !altmode->ports[port].altmode) {
I'd personally use PMIC_GLINK_MAX_PORTS directly but it's the same Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> Konrad
