ssh-keysign-pwn — CVE-2026-46333

A critical race condition flaw in pre-31e62c2ebbfd Linux kernels. Due to a window during process exit where the memory management structure is cleared before file descriptors are closed, an unprivileged user can use pidfd_getfd(2) to steal open file descriptors of privileged processes, enabling unauthorized reading of root-owned files.

🔗 Exploit:
https://github.com/0xdeadbeefnetwork/ssh-keysign-pwn

🔗 Source:
https://blog.qualys.com/vulnerabilities-threat-research/2026/05/20/cve-2026-46333-local-root-privilege-escalation-and-credential-disclosure-in-the-linux-kernel-ptrace-path

#linux #kernel #privesc #racecondition #pidfd