diff options
| author | Amlal El Mahrouss <amlal@nekernel.org> | 2025-04-18 18:34:33 +0200 |
|---|---|---|
| committer | Amlal El Mahrouss <amlal@nekernel.org> | 2025-04-18 18:34:33 +0200 |
| commit | 6d99a232379317afed814a023fee464001f796ea (patch) | |
| tree | 8f8e5602fba26ea22ac97dddaaf5157dc6d02f97 /dev/kernel/src/Gfx | |
| parent | b69c498953dc47900e6ccdd0f501727480836f23 (diff) | |
kernel, GfxKit: FIX: Check boundaries to avoid page fault.
Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
Diffstat (limited to 'dev/kernel/src/Gfx')
| -rw-r--r-- | dev/kernel/src/Gfx/FBDeviceInterface.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/dev/kernel/src/Gfx/FBDeviceInterface.cc b/dev/kernel/src/Gfx/FBDeviceInterface.cc index a9b2be29..525f32b4 100644 --- a/dev/kernel/src/Gfx/FBDeviceInterface.cc +++ b/dev/kernel/src/Gfx/FBDeviceInterface.cc @@ -29,6 +29,13 @@ FBDeviceInterface& FBDeviceInterface::operator<<(FBDevicePacket* pckt) if (!pckt) return *this; + if (pckt->fHeight == 0 || pckt->fWidth == 0) + return *this; + + if (pckt->fX > kHandoverHeader->f_GOP.f_Width || + pckt->fY > kHandoverHeader->f_GOP.f_Height) + return *this; + FBDrawInRegion(pckt->fColor, pckt->fHeight, pckt->fWidth, pckt->fY, pckt->fX); return *this; @@ -42,6 +49,10 @@ FBDeviceInterface& FBDeviceInterface::operator>>(FBDevicePacket* pckt) if (!pckt) return *this; + if (pckt->fX > kHandoverHeader->f_GOP.f_Width || + pckt->fY > kHandoverHeader->f_GOP.f_Height) + return *this; + pckt->fColor = *(((Kernel::UInt32*)(kHandoverHeader->f_GOP.f_The + 4 * kHandoverHeader->f_GOP.f_PixelPerLine * pckt->fX + |