6.9-stable review patch. If anyone has any objections, please let me know.
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From: Ekansh Gupta quic_ekangupt@quicinc.com
commit e7f0be3f09c6e955dc8009129862b562d8b64513 upstream.
User is passing capability ioctl structure(argp) to get DSP capabilities. This argp is copied to a local structure to get domain and attribute_id information. After getting the capability, only capability value is getting copied to user argp which will not be useful if the use is trying to get the capability by checking the capability member of fastrpc_ioctl_capability structure. Copy the complete capability structure so that user can get the capability value from the expected member of the structure.
Fixes: 6c16fd8bdd40 ("misc: fastrpc: Add support to get DSP capabilities") Cc: stable stable@kernel.org Signed-off-by: Ekansh Gupta quic_ekangupt@quicinc.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Reviewed-by: Caleb Connolly caleb.connolly@linaro.org Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Link: https://lore.kernel.org/r/20240628114501.14310-3-srinivas.kandagatla@linaro.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/misc/fastrpc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -1787,7 +1787,7 @@ static int fastrpc_get_dsp_info(struct f if (err) return err;
- if (copy_to_user(argp, &cap.capability, sizeof(cap.capability))) + if (copy_to_user(argp, &cap, sizeof(cap))) return -EFAULT;
return 0;