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cve/2009/CVE-2009-1895.md
0xMarcio 49bdc782b3 Update Sun May 26 14:27:04 CEST 2024
2024-05-26 14:27:05 +02:00

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CVE-2009-1895

Description

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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