The personality subsystem in the Linux kernel before 2.6...
High severity
Unreviewed
Published
May 2, 2022
to the GitHub Advisory Database
•
Updated Feb 20, 2023
Description
Published by the National Vulnerability Database
Jul 16, 2009
Published to the GitHub Advisory Database
May 2, 2022
Last updated
Feb 20, 2023
The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).
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