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How I Found a $113,337 AF_ALG Linux Local Privilege Escalation Before Copy Fail
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Submitted September 24, 2026 at 08:14PM by idnsec
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IDNSEC How I Found a $113,337 AF_ALG Linux Local Privilege Escalation Before Copy Fail A retrospective on CVE-2025-39964, an AF_ALG race condition I found in 2025 before Copy Fail drew attention to the same subsystem. I explain the out-of-bounds scatterlist access, the usercopy oracle, and the exploit that achieved root and a Docker container…
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