Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-07 21:53:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

media: vidtv: mux: Add check and kfree for kstrdup

Browse Source 
Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.
Moreover, use kfree() in the later error handling in order to avoid
memory leak.

Fixes: c2f78f0cb2 ("media: vidtv: psi: add a Network Information Table (NIT)")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Jiasheng Jiang 2023-06-19 16:12:02 +08:00 committed by Hans Verkuil
parent 76a2c5df6c
commit 1fd6eb1264
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/media/test-drivers/vidtv/vidtv_mux.c
View File

@ -504,13 +504,16 @@ struct vidtv_mux *vidtv_mux_init(struct dvb_frontend *fe,
m->priv = args->priv;
m->network_id = args->network_id;
m->network_name = kstrdup(args->network_name, GFP_KERNEL);
if (!m->network_name)
goto free_mux_buf;
m->timing.current_jiffies = get_jiffies_64();
if (args->channels)
m->channels = args->channels;
else
if (vidtv_channels_init(m) < 0)
goto free_mux_buf;
goto free_mux_network_name;
/* will alloc data for pmt_sections after initializing pat */
if (vidtv_channel_si_init(m) < 0)
@ -527,6 +530,8 @@ struct vidtv_mux *vidtv_mux_init(struct dvb_frontend *fe,
vidtv_channel_si_destroy(m);
free_channels:
vidtv_channels_destroy(m);
free_mux_network_name:
kfree(m->network_name);
free_mux_buf:
vfree(m->mux_buf);
free_mux: