free5GC SMF PFCP Null Pointer Dereference DoS (CVE-2026-25501)

Thinking Process: 1. Analyze the Request: Task: Translate a Chinese vulnerability intelligence summary to English. Role: Professional translator specializing in cybersecurity. Constraint 1: Maintain all Markdown formatting intact. Constraint 2: Do not add any introductory or concluding remarks. Input: A Markdown snippet containing vulnerability details (Name, IDs, Severity, Impact, Mitigation, etc.). Observation: The input text is actually a mix of Chinese and English. Some fields (like Vulnerability Name, GHSA ID, CVE ID, CWE) are already in English. The Chinese parts need translation. The goal is to produce a fully English version while keeping the structure. 2. Analyze the Input Content: -> (or similar standard term like ) -> -> (The content is already English, just translate the label) -> Keep as is. -> Keep as is. -> -> -> -> -> -> Content: -> Content: -> -> (or ) Content: -> -> Content: -> Content: -> Content: -> -> (or ) -> Keep as is. 3. Refine Terminology: "陷入混乱" in the context of software usually means "crashes" or "becomes unstable". Given "SMF 进程终止" (SMF process terminates), "crashes" is the accurate technical term. "解除引用" -> "dereference". "派发" -> "dispatch" (in the context of goroutines). "传感器" -> "sensor" (in the context of security monitoring). "根除修复" -> "root cause fix" or "permanent fix". "Root cause fix" sounds more professional. "关键信息" -> "Key Information" or "Critical Information". "Key Information" is standard. "概述" -> "Overview". "严重性" -> "Severity". "相关 tickets" -> "Related Tickets". "影响" -> "Impact". "受影响的版本" -> "Affected Versions". "已修复的版本" -> "Fixed Versions" or "Patched Versions". "描述与影响" -> "Description and Impact". "修复建议" -> "Remediation Recommendations" or "Fix Recommendations". "缓解措施" -> "Mitigation Measures". "弱点" -> "Weakness". 4. Drafting the Translation: 5. Review against Constraints: Markdown formatting intact? Yes. No intro/outro? Yes. Professional cybersecurity tone? Yes. Accurate translation? Yes. Self-Correction on "Weakness": In CVE/CWE contexts, "Weakness" is the standard term for CWE. Self-Correction on "Key Information": "Critical Information" might sound better, but "Key Information" is a direct translation of "关键信息". In vulnerability reports, "Vulnerability Details" is also common. However, sticking close to the source structure is safer. Let's use "Vulnerability Key Information". Self-Correction on "陷入混乱": "Crashes" is definitely the right term here given "process terminates". Self-Correction on "传感器": "Sensor" is okay, but "monitor" or "inspection" might be smoother. The original says "PFCP 传感器". I will keep "sensor" but maybe add "monitoring" context if needed. "PFCP sensor filtering/inspection" is fine. Self-Correction on "派发":* "Dispatch" is correct for goroutines. Let's finalize the text. One detail: "free5GC issue #805" is already English in the source, keep it. "req.DownlinkDataReport" is code, keep it. "recover()" is code, keep it. "panic-recovery" is a concept, keep it. Final check on Markdown headers and lists. Input: Output should start with . Wait, looking closely at the input: has nested bullet points in the description? Input: Yes, it's a nested list. I need to preserve that indentation. Input: This is a single bullet point with text. Input: Three bullet points. Okay, ready to generate. One minor nuance: "关键信息" could be "Critical Information" or "Key Information". In security advisories, "Vulnerability Details" is often used, but "Key Information" is a literal translation. I will use "Vulnerability Key Information" to be safe and accurate to the source structure. "相关 tickets" -> "Related Tickets". "已修复的版本" -> "Fixed Versions". "弱点" -> "Weakness". Let's assemble. Wait, checking the CVE ID: . This is in the future (2026). I should not change it, just translate. Checking GHSA ID: . Keep as is. Translation of "陷入混乱": "crashes" is best. "Becomes confused" is wrong. "Malfunctions" is okay but "crashes" fits "process terminates". Translation of "解除引用": "dereference". Translation of "派发": "dispatch". Translation of "传感器": "sensor". Final check on formatting. Ensure bolding is preserved. Ensure headers , are preserved. Ensure list indentation is preserved. Let's write it. Wait, one more check on "Vulnerability Key Information". Maybe "Vulnerability Critical Information"? "关键" can mean Critical or Key. Given it's a summary, "Key Information" is standard. "Vulnerability Overview" for "漏洞概述". "Impact" for "影响". "Remediation Recommendations" for "修复建议". "Mitigation Measures" for "缓解措施". "Weakness" for "弱点". Okay, proceeding. One detail in "Remediation Recommendations": "当前上游问题中尚未识别具体的修复方法" -> "No specific fix has been identified in the current upstream issue." "推荐添加 nil-check 对 req.DownlinkDataReport 的解除引用检查" -> "It is recommended to add a nil-check for the dereference of req.DownlinkDataReport" "并可选地在 PFCP goroutine 派发周围添加 panic-recovery 来预防整个进程的终止" -> "and optionally add panic-recovery around the PFCP goroutine dispatch to prevent the termination of the ent

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free5GC SMF PFCP Null Pointer Dereference DoS (CVE-2026-25501)

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