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| author | Igor Matheus Andrade Torrente <igormtorrente@gmail.com> | 2021-05-03 13:57:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-13 17:33:55 +0200 |
| commit | dc13cac4862cc68ec74348a80b6942532b7735fa (patch) | |
| tree | 76b99cc1e200e5de2f07838e2d85b5b46f175836 /drivers/isdn | |
| parent | Revert "video: hgafb: fix potential NULL pointer dereference" (diff) | |
| download | linux-dc13cac4862cc68ec74348a80b6942532b7735fa.tar.xz linux-dc13cac4862cc68ec74348a80b6942532b7735fa.zip | |
video: hgafb: fix potential NULL pointer dereference
The return of ioremap if not checked, and can lead to a NULL to be
assigned to hga_vram. Potentially leading to a NULL pointer
dereference.
The fix adds code to deal with this case in the error label and
changes how the hgafb_probe handles the return of hga_card_detect.
Cc: Ferenc Bakonyi <fero@drama.obuda.kando.hu>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-40-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/isdn')
0 files changed, 0 insertions, 0 deletions