this post was submitted on 16 May 2026
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blueteamsec

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digicat
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ssh-keysign-pwn: Steal SSH host private keys and /etc/shadow via the ptrace_may_access mm-NULL bypass + pidfd_getfd. Pre-31e62c2ebbfd kernels. (github.com)
submitted 3 months ago by digicat to c/blueteamsec
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[–] digicat 1 points 3 months ago

mitigations discussion: https://www.openwall.com/lists/oss-security/2026/05/15/3