Messages in this thread Patch in this message | | | From | Johan Hovold <> | Subject | [PATCH] drm/edid: fix info leak when failing to get panel id | Date | Thu, 2 Mar 2023 08:47:04 +0100 |
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Make sure to clear the transfer buffer before fetching the EDID to avoid leaking slab data to the logs on errors that leave the buffer unchanged.
Fixes: 69c7717c20cc ("drm/edid: Dump the EDID when drm_edid_get_panel_id() has an error") Cc: stable@vger.kernel.org # 6.2 Cc: Douglas Anderson <dianders@chromium.org> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> --- drivers/gpu/drm/drm_edid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 3841aba17abd..8707fe72a028 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2797,7 +2797,7 @@ u32 drm_edid_get_panel_id(struct i2c_adapter *adapter) * the EDID then we'll just return 0. */ - base_block = kmalloc(EDID_LENGTH, GFP_KERNEL); + base_block = kzalloc(EDID_LENGTH, GFP_KERNEL); if (!base_block) return 0; -- 2.39.2
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