[git:media_stage/master] media: vidtv: psi: Add check for kstrdup
This is an automatic generated email to let you know that the following patch
were queued:
Subject: media: vidtv: psi: Add check for kstrdup
Author: Jiasheng Jiang
Date:Mon Jun 19 16:12:01 2023 +0800
Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.
Fixes: 7a7899f6f58e ("media: vidtv: psi: Implement an Event Information Table
(EIT)")
Fixes: c2f78f0cb294 ("media: vidtv: psi: add a Network Information Table (NIT)")
Fixes: f90cf6079bf6 ("media: vidtv: add a bridge driver")
Signed-off-by: Jiasheng Jiang
Signed-off-by: Hans Verkuil
drivers/media/test-drivers/vidtv/vidtv_psi.c | 45
1 file changed, 40 insertions(+), 5 deletions(-)
---
diff --git a/drivers/media/test-drivers/vidtv/vidtv_psi.c
b/drivers/media/test-drivers/vidtv/vidtv_psi.c
index ce0b7a6e92dc..2a51c898c11e 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_psi.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_psi.c
@@ -301,16 +301,29 @@ struct vidtv_psi_desc_service
*vidtv_psi_service_desc_init(struct vidtv_psi_desc
desc->service_name_len = service_name_len;
- if (service_name && service_name_len)
+ if (service_name && service_name_len) {
desc->service_name = kstrdup(service_name, GFP_KERNEL);
+ if (!desc->service_name)
+ goto free_desc;
+ }
desc->provider_name_len = provider_name_len;
- if (provider_name && provider_name_len)
+ if (provider_name && provider_name_len) {
desc->provider_name = kstrdup(provider_name, GFP_KERNEL);
+ if (!desc->provider_name)
+ goto free_desc_service_name;
+ }
vidtv_psi_desc_chain(head, (struct vidtv_psi_desc *)desc);
return desc;
+
+free_desc_service_name:
+ if (service_name && service_name_len)
+ kfree(desc->service_name);
+free_desc:
+ kfree(desc);
+ return NULL;
}
struct vidtv_psi_desc_registration
@@ -355,8 +368,13 @@ struct vidtv_psi_desc_network_name
desc->length = network_name_len;
- if (network_name && network_name_len)
+ if (network_name && network_name_len) {
desc->network_name = kstrdup(network_name, GFP_KERNEL);
+ if (!desc->network_name) {
+ kfree(desc);
+ return NULL;
+ }
+ }
vidtv_psi_desc_chain(head, (struct vidtv_psi_desc *)desc);
return desc;
@@ -442,15 +460,32 @@ struct vidtv_psi_desc_short_event
iso_language_code = "eng";
desc->iso_language_code = kstrdup(iso_language_code, GFP_KERNEL);
+ if (!desc->iso_language_code)
+ goto free_desc;
- if (event_name && event_name_len)
+ if (event_name && event_name_len) {
desc->event_name = kstrdup(event_name, GFP_KERNEL);
+ if (!desc->event_name)
+ goto free_desc_language_code;
+ }
- if (text && text_len)
+ if (text && text_len) {
desc->text = kstrdup(text, GFP_KERNEL);
+ if (!desc->text)
+ goto free_desc_event_name;
+ }
vidtv_psi_desc_chain(head, (struct vidtv_psi_desc *)desc);
return desc;
+
+free_desc_event_name:
+ if (event_name && event_name_len)
+ kfree(desc->event_name);
+free_desc_language_code:
+ kfree(desc->iso_language_code);
+free_desc:
+ kfree(desc);
+ return NULL;
}
struct vidtv_psi_desc *vidtv_psi_desc_clone(struct vidtv_psi_desc *desc)
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[git:media_stage/master] media: vidtv: psi: Add check for kstrdup
This is an automatic generated email to let you know that the following patch
were queued:
Subject: media: vidtv: psi: Add check for kstrdup
Author: Jiasheng Jiang
Date:Mon Jun 19 16:12:01 2023 +0800
Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.
Fixes: 7a7899f6f58e ("media: vidtv: psi: Implement an Event Information Table
(EIT)")
Fixes: c2f78f0cb294 ("media: vidtv: psi: add a Network Information Table (NIT)")
Fixes: f90cf6079bf6 ("media: vidtv: add a bridge driver")
Signed-off-by: Jiasheng Jiang
Signed-off-by: Hans Verkuil
drivers/media/test-drivers/vidtv/vidtv_psi.c | 45
1 file changed, 40 insertions(+), 5 deletions(-)
---
diff --git a/drivers/media/test-drivers/vidtv/vidtv_psi.c
b/drivers/media/test-drivers/vidtv/vidtv_psi.c
index ce0b7a6e92dc..2a51c898c11e 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_psi.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_psi.c
@@ -301,16 +301,29 @@ struct vidtv_psi_desc_service
*vidtv_psi_service_desc_init(struct vidtv_psi_desc
desc->service_name_len = service_name_len;
- if (service_name && service_name_len)
+ if (service_name && service_name_len) {
desc->service_name = kstrdup(service_name, GFP_KERNEL);
+ if (!desc->service_name)
+ goto free_desc;
+ }
desc->provider_name_len = provider_name_len;
- if (provider_name && provider_name_len)
+ if (provider_name && provider_name_len) {
desc->provider_name = kstrdup(provider_name, GFP_KERNEL);
+ if (!desc->provider_name)
+ goto free_desc_service_name;
+ }
vidtv_psi_desc_chain(head, (struct vidtv_psi_desc *)desc);
return desc;
+
+free_desc_service_name:
+ if (service_name && service_name_len)
+ kfree(desc->service_name);
+free_desc:
+ kfree(desc);
+ return NULL;
}
struct vidtv_psi_desc_registration
@@ -355,8 +368,13 @@ struct vidtv_psi_desc_network_name
desc->length = network_name_len;
- if (network_name && network_name_len)
+ if (network_name && network_name_len) {
desc->network_name = kstrdup(network_name, GFP_KERNEL);
+ if (!desc->network_name) {
+ kfree(desc);
+ return NULL;
+ }
+ }
vidtv_psi_desc_chain(head, (struct vidtv_psi_desc *)desc);
return desc;
@@ -442,15 +460,32 @@ struct vidtv_psi_desc_short_event
iso_language_code = "eng";
desc->iso_language_code = kstrdup(iso_language_code, GFP_KERNEL);
+ if (!desc->iso_language_code)
+ goto free_desc;
- if (event_name && event_name_len)
+ if (event_name && event_name_len) {
desc->event_name = kstrdup(event_name, GFP_KERNEL);
+ if (!desc->event_name)
+ goto free_desc_language_code;
+ }
- if (text && text_len)
+ if (text && text_len) {
desc->text = kstrdup(text, GFP_KERNEL);
+ if (!desc->text)
+ goto free_desc_event_name;
+ }
vidtv_psi_desc_chain(head, (struct vidtv_psi_desc *)desc);
return desc;
+
+free_desc_event_name:
+ if (event_name && event_name_len)
+ kfree(desc->event_name);
+free_desc_language_code:
+ kfree(desc->iso_language_code);
+free_desc:
+ kfree(desc);
+ return NULL;
}
struct vidtv_psi_desc *vidtv_psi_desc_clone(struct vidtv_psi_desc *desc)
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