Hello everybody, please, can somebody accept the fix for master? It should be ideally applied even to stable branches.
Or should I send request through some other form
then on the list?
Thanks,
Pavel
On Monday 26 of July 2021 18:24:58 Pavel Pisa wrote:
> Problem reported by openEuler fuzz-sig group.
>
> The buff2frame_bas function (hw\net\can\can_sja1000.c)
> infoleak(qemu5.x~qemu6.x) or stack-overflow(qemu 4.x).
>
> Reported-by: Qiang Ning <ningqia...@huawei.com>
> Signed-off-by: Pavel Pisa <p...@cmp.felk.cvut.cz>
> ---
> hw/net/can/can_sja1000.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/hw/net/can/can_sja1000.c b/hw/net/can/can_sja1000.c
> index 42d2f99dfb..64e81bff58 100644
> --- a/hw/net/can/can_sja1000.c
> +++ b/hw/net/can/can_sja1000.c
> @@ -311,6 +311,10 @@ static void buff2frame_bas(const uint8_t *buff,
> qemu_can_frame *frame) }
> frame->can_dlc = buff[1] & 0x0f;
>
> + if (frame->can_dlc > 8) {
> + frame->can_dlc = 8;
> + }
> +
> for (i = 0; i < frame->can_dlc; i++) {
> frame->data[i] = buff[2 + i];
> }
signature.asc
Description: This is a digitally signed message part.
