CVE-2026-63922 — 神龙十问 AI 深度分析摘要

🚨 **Essence**: A critical memory safety flaw in Linux Kernel IPv6 processing. <br>💥 **Consequences**: `ip6_parse_tlv()` caches a pointer, but `ipv6_dest_hao()` may shift the buffer via `pskb_expand_head()`.…

🛠️ **Root Cause**: Use-After-Free / Dangling Pointer logic error. <br>🔍 **Flaw**: The kernel fails to update cached network header pointers after the socket buffer (`skb`) is reallocated or moved.…

📦 **Affected**: Linux Kernel **v2.6.19**. <br>🌍 **Component**: IPv6 Extension Header processing module.…

🕵️ **Attacker Actions**: <br>1. **Info Leak**: Read arbitrary kernel memory via OOB read. <br>2. **DoS**: Crash the network stack (Kernel Panic). <br>3.…

📊 **Exploitation Threshold**: **LOW**. <br>🌐 **Network**: Remote (AV:N). <br>🔑 **Auth**: None required (PR:N). <br>👤 **User Interaction**: None (UI:N). <br>🎯 **Complexity**: Low (AC:L).…

🚫 **Public Exploit**: **No**. <br>📝 **Status**: The `pocs` field is empty. While the CVSS score is High (9.8), no public Proof-of-Concept (PoC) or wild exploitation code is currently available in the provided data. 🕵️‍♂️

🔍 **Self-Check**: <br>1. Check Kernel Version: `uname -r` (Look for 2.6.19). <br>2. Enable IPv6: Ensure `ipv6` module is loaded. <br>3. Scan: Use network fuzzers targeting IPv6 Extension Headers. 📡

✅ **Official Fix**: **Yes**. <br>🔗 **Patches**: Multiple stable kernel commits are linked (e.g., `12d9579...`, `f8aabed...`). These commits fix the pointer invalidation logic in the IPv6 parser. 🛡️

🛡️ **Workaround (No Patch)**: <br>1. **Disable IPv6**: If not needed, turn off IPv6 support. <br>2. **Firewall**: Block external IPv6 traffic at the perimeter. <br>3.…

🔥 **Urgency**: **CRITICAL**. <br>📈 **Priority**: **P0**. <br>📅 **CVSS**: 9.8 (Critical). <br>⏳ **Action**: Patch immediately.…