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* grub-core/video/readers/jpeg.c: Avoid division by zero.

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Vladimir Serbinenko committed 2015-01-21 17:42:13 +01:00
1 parent 750f4bacd3
commit 4816dcac19
2 files changed
+5 -1
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grub-core/video/readers/jpeg.c
+1 -1
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@@ -317,7 +317,7 @@ grub_jpeg_decode_sof (struct grub_jpeg_data *data)
{
data->vs = ss & 0xF; /* Vertical sampling. */
data->hs = ss >> 4; /* Horizontal sampling. */
if ((data->vs > 2) || (data->hs > 2))
if ((data->vs > 2) || (data->hs > 2) || (data->vs == 0) || (data->hs == 0))
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: sampling method not supported");
}