IonStack Part II GhostLock, a 15-year Linux rtmutex/Futex PI...

[carlospolop]

🤖 Automated Content Update

This PR was automatically generated by the HackTricks News Bot based on a technical blog post.

📝 Source Information

• Blog URL: https://nebusec.ai/research/ionstack-part-2
• Blog Title: IonStack Part II: GhostLock, a 15-year Linux rtmutex/Futex PI stack-UAF enabling local privilege escalation
• Suggested Section: Linux Hardening > Linux Privilege Escalation > GhostLock / Futex PI rtmutex stack-UAF LPE (CVE-2026-43499), with cross-reference from Binary Exploitation > Linux kernel exploitation

🎯 Content Summary

IonStack part II analyzes GhostLock / CVE-2026-43499, a Linux kernel stack use-after-free in the rtmutex / Futex PI path. The bug was introduced in v2.6.39-rc1 by commit 8161239a8bcc and fixed in v7.1-rc1 / April 2026 by commit

[carlospolop]

🔗 Additional Context

Original Blog Post: https://nebusec.ai/research/ionstack-part-2

Content Categories: Based on the analysis, this content was categorized under "Linux Hardening > Linux Privilege Escalation > GhostLock / Futex PI rtmutex stack-UAF LPE (CVE-2026-43499), with cross-reference from Binary Exploitation > Linux kernel exploitation".

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