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pikvm/pikvm#1558: Discard JPEGs with invalid headers

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This commit is contained in:
Maxim Devaev 2025-07-28 21:26:08 +03:00
parent 913cdac7a6
commit 3a831817f4
1 changed files with 6 additions and 0 deletions
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6
src/libs/capture.c
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@ -573,6 +573,12 @@ bool _capture_is_buffer_valid(const us_capture_s *cap, const struct v4l2_buffer
return false;
}
const u16 begin_marker = (((u16)(data[0]) << 8) | data[1]);
if (begin_marker != 0xFFD8) {
_LOG_DEBUG("Discarding JPEG frame with invalid header: begin_marker=0x%04x, bytesused=%u", begin_marker, buf->bytesused);
return false;
}
const u8 *const end_ptr = data + buf->bytesused;
const u8 *const eoi_ptr = end_ptr - 2;
const u16 eoi_marker = (((u16)(eoi_ptr[0]) << 8) | eoi_ptr[1]);