Anirudh Rayabharam e8c34789f1 video: hgafb: correctly handle card detect failure during probe ... commit 02625c965239b71869326dd0461615f27307ecb3 upstream. The return value of hga_card_detect() is not properly handled causing the probe to succeed even though hga_card_detect() failed. Since probe succeeds, hgafb_open() can be called which will end up operating on an unmapped hga_vram. This results in an out-of-bounds access as reported by kernel test robot [1]. To fix this, correctly detect failure of hga_card_detect() by checking for a non-zero error code. [1]: https://lore.kernel.org/lkml/20210516150019.GB25903@xsang-OptiPlex-9020/ Fixes: dc13cac4862c ("video: hgafb: fix potential NULL pointer dereference") Cc: stable <stable@vger.kernel.org> Reported-by: kernel test robot <oliver.sang@intel.com> Reviewed-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com> Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20210516192714.25823-1-mail@anirudhrb.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-26 12:06:57 +02:00
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backlight	backlight: qcom-wled: Fix FSC update issue for WLED5	2021-05-11 14:47:25 +02:00
console	vt: Fix character height handling with VT_RESIZEX	2021-05-26 12:06:56 +02:00
fbdev	video: hgafb: correctly handle card detect failure during probe	2021-05-26 12:06:57 +02:00
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