CVE-2026-31501 — AI Deep Analysis Summary

Q: Who is affected? (Versions/Components)

🌍 **Affected**: **Linux Kernel** (Open Source OS by Linux Foundation). 📦 **Component**: Specifically the `icssg-prueth` driver. 📅 **Published**: April 22, 2026.

Q: Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **LOW**. 🌐 **Network**: Attack Vector is **Network (AV:N)**. 🔑 **Auth**: **No Privileges Required (PR:N)**. 👤 **User**: **No User Interaction (UI:N)**. Easily exploitable remotely.

Q: Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **Yes**. 🩹 **Patch**: Official fixes are available via Linux stable kernels. 🔗 **Refs**: See kernel.org stable commits `eb8c426c...` and `d5827316...`.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. ⚡ **Priority**: **Immediate Action Required**. 📉 **Reason**: CVSS 9.8 + Network Access + No Auth = High Risk. Patch immediately upon availability.

Updated May 06, 2026 CVSS 9.8 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: A critical flaw in the Linux kernel's `icssg-prueth` driver. The RX path releases CPPI descriptors **too early**. <br>⚠️ **Consequence**: This leads to a **Use-After-Free (UAF)** scenario.…

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Q2Root Cause? (CWE/Flaw)

🛠️ **Root Cause**: Improper memory management in the driver's receive (RX) path. Specifically, the **premature release** of CPPI descriptors.…

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Q3Who is affected? (Versions/Components)

🌍 **Affected**: **Linux Kernel** (Open Source OS by Linux Foundation). <br>📦 **Component**: Specifically the `icssg-prueth` driver. <br>📅 **Published**: April 22, 2026.

Q4What can hackers do? (Privileges/Data)

💥 **Impact**: **High Severity** (CVSS 9.8). <br>🔓 **Privileges**: Attackers can potentially achieve **Full System Control** (Root/Admin).…

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Q5Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **LOW**. <br>🌐 **Network**: Attack Vector is **Network (AV:N)**. <br>🔑 **Auth**: **No Privileges Required (PR:N)**. <br>👤 **User**: **No User Interaction (UI:N)**. Easily exploitable remotely.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exploit**: **None Available**. <br>📝 **PoCs**: The `pocs` field is empty.…

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Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Check if your kernel uses the `icssg-prueth` driver. <br>2. Scan for kernel versions affected by this specific commit. <br>3.…

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Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **Yes**. <br>🩹 **Patch**: Official fixes are available via Linux stable kernels. <br>🔗 **Refs**: See kernel.org stable commits `eb8c426c...` and `d5827316...`.

Q9What if no patch? (Workaround)

🛡️ **No Patch Workaround**: <br>1. **Disable** the `icssg-prueth` driver if not strictly needed. <br>2. **Isolate** the device from untrusted networks. <br>3.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. <br>⚡ **Priority**: **Immediate Action Required**. <br>📉 **Reason**: CVSS 9.8 + Network Access + No Auth = High Risk. Patch immediately upon availability.

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