| 标题 | libvips 8.19.0(7fab325d2) Improper Validation of Array Index |
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| 描述 | In `libvips/conversion/bandrank.c`, function `vips_bandrank_build()` accepts user-controlled `index` but does not validate it against the runtime input count (`bandary->n`) when explicitly set. `vips_bandrank_buffer()` later uses `sort[bandrank->index]` directly, causing out-of-bounds access when `--index` exceeds the number of input images. The bug is reachable from normal `vips bandrank` CLI usage and is reproducible with ASAN as `heap-buffer-overflow`. |
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| 来源 | ⚠️ https://github.com/libvips/libvips/issues/4878 |
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| 用户 | Niebelungen (UID 95430) |
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| 提交 | 2026-02-15 16時00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 | 348010 [libvips 8.19.0 bandrank.c vips_bandrank_build index 内存损坏] |
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| 积分 | 20 |
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