| Message ID | 20240418145730.4605-2-johan+linaro@kernel.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | usb: typec: qcom-pmic: fix use-after-free on late probe errors | expand |
On Thu, Apr 18, 2024 at 04:57:29PM +0200, Johan Hovold wrote: > Make sure to stop and deregister the port in case of late probe errors > to avoid use-after-free issues when the underlying memory is released by > devres. > > Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver") > Cc: stable@vger.kernel.org # 6.5 > Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> > --- > drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
On 18/04/2024 15:57, Johan Hovold wrote: > Make sure to stop and deregister the port in case of late probe errors > to avoid use-after-free issues when the underlying memory is released by > devres. > > Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver") > Cc: stable@vger.kernel.org # 6.5 > Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> > --- > drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c > index e48412cdcb0f..d3958c061a97 100644 > --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c > +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c > @@ -104,14 +104,18 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev) > > ret = tcpm->port_start(tcpm, tcpm->tcpm_port); > if (ret) > - goto fwnode_remove; > + goto port_unregister; > > ret = tcpm->pdphy_start(tcpm, tcpm->tcpm_port); > if (ret) > - goto fwnode_remove; > + goto port_stop; > > return 0; > > +port_stop: > + tcpm->port_stop(tcpm); > +port_unregister: > + tcpm_unregister_port(tcpm->tcpm_port); > fwnode_remove: > fwnode_remove_software_node(tcpm->tcpc.fwnode); > Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
On Thu, Apr 18, 2024 at 04:57:29PM +0200, Johan Hovold wrote: > Make sure to stop and deregister the port in case of late probe errors > to avoid use-after-free issues when the underlying memory is released by > devres. > > Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver") > Cc: stable@vger.kernel.org # 6.5 > Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c > index e48412cdcb0f..d3958c061a97 100644 > --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c > +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c > @@ -104,14 +104,18 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev) > > ret = tcpm->port_start(tcpm, tcpm->tcpm_port); > if (ret) > - goto fwnode_remove; > + goto port_unregister; > > ret = tcpm->pdphy_start(tcpm, tcpm->tcpm_port); > if (ret) > - goto fwnode_remove; > + goto port_stop; > > return 0; > > +port_stop: > + tcpm->port_stop(tcpm); > +port_unregister: > + tcpm_unregister_port(tcpm->tcpm_port); > fwnode_remove: > fwnode_remove_software_node(tcpm->tcpc.fwnode); > > -- > 2.43.2
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c index e48412cdcb0f..d3958c061a97 100644 --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c @@ -104,14 +104,18 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev) ret = tcpm->port_start(tcpm, tcpm->tcpm_port); if (ret) - goto fwnode_remove; + goto port_unregister; ret = tcpm->pdphy_start(tcpm, tcpm->tcpm_port); if (ret) - goto fwnode_remove; + goto port_stop; return 0; +port_stop: + tcpm->port_stop(tcpm); +port_unregister: + tcpm_unregister_port(tcpm->tcpm_port); fwnode_remove: fwnode_remove_software_node(tcpm->tcpc.fwnode);
Make sure to stop and deregister the port in case of late probe errors to avoid use-after-free issues when the underlying memory is released by devres. Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver") Cc: stable@vger.kernel.org # 6.5 Cc: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> --- drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)