jxl-oxide: `FrameBuffer::new` creates out-of-bounds slices on overflow
jxl-oxide exposes a public safe API that can construct an undersized FrameBuffer due to unchecked usize multiplication, which immediately trigger panic while initializing the buffer in normal decoding path.
Additionally, calling the safe grouped buffer accessors afterward can create invalid oversized slices from a much smaller allocation, causing undefined behavior; however normal decoding path never reaches UB, because these methods are never used within jxl-oxide.
On 32-bit platforms this can cause panic by accessing out-of-range indices, making it a DoS vulnerability.
왜 이 VPI인가 (설명가능 · 실험적)
VPI 산정 기준
| 영향도 | 62.00 |
| 악용 신호(추가 악용신호 없음) | ×1.00 |
| VPI | 62.00 |
VPI 공식 vpi-v1 기준