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-2026-112646/CVE-2026-112646.swift

@@ -0,0 +1,40 @@
+// sb.stash · SpringBoard · SBHomeScreenService · CVE-2026-112646
+// 原语: OOB 写 · 系统进程 · tier 3
+// Primitive: OOB write · system process · tier 3
+//
+// [zh] SpringBoard 布局名 stash 校验
+// 27.2 新增 +[SBHomeScreenService _validationErrorForStashedLayoutName:]：拒绝空串、限制长度 ≤ 64、施加字符集白名单，作用于
+// stash/restore 的 XPC 接口。27.0 的该接口不含此层校验。
+//
+// [en] SpringBoard stashed layout name validation
+// iOS 27.2 adds +[SBHomeScreenService _validationErrorForStashedLayoutName:]: reject empty, cap length
+// at 64, apply a character-set allowlist, on the stash/restore XPC interface. The 27.0 interface
+// has no such layer.
+// ── 判别 / oracle ──
+// 应用侧只能看 SpringBoard 服务是否可达、类是否在进程里。真正的入口是 XPC，需要越过沙盒。
+
+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) }
+}
+
+
+