| 标题 | libvips 8.19.0(7fab325d2) Integer Overflow or Wraparound |
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| 描述 | In `libvips/conversion/extract.c`, function `vips_extract_area_build()` uses signed additions (`left + width`, `top + height`) in bounds checks. Large attacker-controlled coordinates can overflow and bypass validation. `vips_extract_area_gen()` propagates these unchecked offsets into region copy preparation, reaching invalid `memcpy` paths via `vips_region_copy`. The issue is reachable through normal `vips extract_area` CLI usage (with `--vips-max-coord` set high) and is reproducible with ASAN as `SEGV`. |
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| 来源 | ⚠️ https://github.com/libvips/libvips/issues/4879 |
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| 用户 | Niebelungen (UID 95430) |
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| 提交 | 2026-02-15 16時03分 (4 月前) |
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| 管理 | 2026-02-26 17時33分 (11 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 348013 [libvips 8.19.0 extract.c vips_extract_area_build extract_area 内存损坏] |
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| 积分 | 20 |
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