Cinder27 — iOS 17.0-27.1 vulnerability verification lab: 51 modules, 31 per-CVE POC folders, 11 no-CVE module folders, harness app source

CVE-2026-112485/CVE-2026-112485.swift

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+// mdl.usda · Model I/O · libusd_ms · CVE-2026-112485
+// 原语: OOB 读 · 进程内 · tier 2
+// Primitive: OOB read · in-process · tier 2
+//
+// [zh] USDA 声明嵌套深度
+// Model I/O 的修复载体为 libusd_ms 24.1.30 → 24.1.32：经 64 位检查的图像分配、Ptex log2 与页保护、USDA 声明嵌套上限、SdfZipFile
+// 尺寸检查。ModelIO.dylib 自身不含任何修复。
+//
+// [en] USDA declaration nesting depth
+// The fix carrier for Model I/O is libusd_ms 24.1.30 → 24.1.32: 64-bit checked image allocation,
+// Ptex log2 and page guards, a USDA declaration nesting cap, and SdfZipFile size checks. ModelIO.dylib
+// itself carries none of the fix.
+// ── 判别 / oracle ──
+// 2000 层嵌套的 def Xform。27.2 会在嵌套上限处拒绝，27.0 递归下去。
+//
+// 种子构建器（python，可直接运行）: CVE-2026-112485/CVE-2026-112485.py
+// runnable python seed builder: CVE-2026-112485/CVE-2026-112485.py
+
+import Foundation
+
+// ── byte helpers — verbatim from Cinder27 Sources/Kit.swift ──
+enum B {
+    static func be16(_ v: UInt16) -> [UInt8] { [UInt8(v >> 8 & 0xff), UInt8(v & 0xff)] }
+    static func le16(_ v: UInt16) -> [UInt8] { [UInt8(v & 0xff), UInt8(v >> 8 & 0xff)] }
+    static func be32(_ v: UInt32) -> [UInt8] {
+        [UInt8(v >> 24 & 0xff), UInt8(v >> 16 & 0xff), UInt8(v >> 8 & 0xff), UInt8(v & 0xff)]
+    }
+    static func le32(_ v: UInt32) -> [UInt8] {
+        [UInt8(v & 0xff), UInt8(v >> 8 & 0xff), UInt8(v >> 16 & 0xff), UInt8(v >> 24 & 0xff)]
+    }
+    static func be64(_ v: UInt64) -> [UInt8] {
+        (0..<8).map { UInt8((v >> (56 - UInt64($0) * 8)) & 0xff) }
+    }
+    static func le64(_ v: UInt64) -> [UInt8] {
+        (0..<8).map { UInt8((v >> (UInt64($0) * 8)) & 0xff) }
+    }
+    static func both16(_ v: UInt16) -> [UInt8] { le16(v) + be16(v) }
+    static func both32(_ v: UInt32) -> [UInt8] { le32(v) + be32(v) }
+    static func ascii(_ s: String) -> [UInt8] { Array(s.utf8) }
+}
+
+
+