A setuid root program is unable to access /proc/self/fd after it lowers its privileges to a normal user
Issue
- A setuid root program is unable to access
/proc/self/fd
after it lowers its privileges to a normal user - An open or stat system call on any file descriptor in it results in an EACCES (Permission denied)
Environment
- Red Hat Enterprise Linux 5
- kernel version smaller than
kernel-2.6.18-238.el5
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