58 lines
2.9 KiB
Swift
58 lines
2.9 KiB
Swift
// aud.haptic · AudioToolbox · AVHapticServerInstance · CVE-2026-113907
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// 原语: OOB 写 · 系统进程 · tier 2
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// Primitive: OOB write · system process · tier 2
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//
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// [zh] AVHaptic 自定义音频事件格式校验
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// createCustomAudioEvent 在 27.0 既不校验 ASBD 的合法性，也不比对 frames×bytesPerFrame 与实际波形字节数。27.2 同时补入这两项校验。
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// 该接口的 XPC 服务端位于 CoreHaptics 的服务器进程内。
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//
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// [en] AVHaptic custom audio event format validation
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// On 27.0 createCustomAudioEvent neither validates the ASBD nor compares frames×bytesPerFrame against
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// the actual waveform byte count. iOS 27.2 adds both checks. The XPC server side of this interface
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// lives in the CoreHaptics server process.
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// ── 判别 / oracle ──
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// 通过 CHHapticEngine 的 audioCustom 事件驱动，是最接近服务端入参的一条公开路径。
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// 变体 aud.immersive: 沉浸式渲染数据反序列化容量缺失
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import Foundation
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// ── byte helpers — verbatim 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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/*
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// aud.immersive · AudioToolbox · ImmersiveRendererDataMarshaller::Deserialize · CVE-2026-113907
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// 原语: OOB 写 · 系统进程 · tier 2
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// Primitive: OOB write · system process · tier 2
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//
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// [zh] 沉浸式渲染数据反序列化容量缺失
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// 反序列化取得的 count 与 dataByteSize 仅与「线缆剩余长度」比较，从不与「目标缓冲容量」比较，构成音频服务器进程内的线性堆溢出。27.2 新增 ReadImmersiveRendererDataV1/V2，
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// 将目标容量一并纳入校验，并补入版本号 1..3 的合法性闸门。
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//
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// [en] Immersive renderer data deserialisation capacity gap
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// The count and dataByteSize taken off the wire are compared only against "how much is left on the
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// wire", never against "how much the destination buffer holds", producing a linear heap overflow
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// inside the audio server process. iOS 27.2 adds ReadImmersiveRendererDataV1/V2, folds destination
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// capacity into the check, and adds a version 1..3 validity gate.
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*/
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