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| author | Zhipeng Lu <alexious@zju.edu.cn> | 2024-01-18 18:13:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-30 10:49:39 +0300 |
| commit | 69b27ff82f87379afeaaea4b2f339032fdd8486e (patch) | |
| tree | b9478fd9aade049f99c2aece82859b1e1db4ee94 | |
| parent | 706170b6409c79b79d97eba7a645ed7d5f6cf795 (diff) | |
| download | linux-69b27ff82f87379afeaaea4b2f339032fdd8486e.tar.xz | |
media: atomisp: ssh_css: Fix a null-pointer dereference in load_video_binaries
[ Upstream commit 3b621e9e9e148c0928ab109ac3d4b81487469acb ]
The allocation failure of mycs->yuv_scaler_binary in load_video_binaries()
is followed with a dereference of mycs->yuv_scaler_binary after the
following call chain:
sh_css_pipe_load_binaries()
|-> load_video_binaries(mycs->yuv_scaler_binary == NULL)
|
|-> sh_css_pipe_unload_binaries()
|-> unload_video_binaries()
In unload_video_binaries(), it calls to ia_css_binary_unload with argument
&pipe->pipe_settings.video.yuv_scaler_binary[i], which refers to the
same memory slot as mycs->yuv_scaler_binary. Thus, a null-pointer
dereference is triggered.
Link: https://lore.kernel.org/r/20240118151303.3828292-1-alexious@zju.edu.cn
Fixes: a49d25364dfb ("staging/atomisp: Add support for the Intel IPU v2")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/staging/media/atomisp/pci/sh_css.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/sh_css.c b/drivers/staging/media/atomisp/pci/sh_css.c index f35c90809414..638f08b3f21b 100644 --- a/drivers/staging/media/atomisp/pci/sh_css.c +++ b/drivers/staging/media/atomisp/pci/sh_css.c @@ -4719,6 +4719,7 @@ static int load_video_binaries(struct ia_css_pipe *pipe) sizeof(struct ia_css_binary), GFP_KERNEL); if (!mycs->yuv_scaler_binary) { + mycs->num_yuv_scaler = 0; err = -ENOMEM; return err; } |