| CVE-2009-1895 | Date: (C)2009-07-16 (M)2024-02-22 |
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).
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V2 Severity: |
| CVSS Score : 7.2 |
| Exploit Score: 3.9 |
| Impact Score: 10.0 |
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| CVSS V2 Metrics: |
| Access Vector: LOCAL |
| Access Complexity: LOW |
| Authentication: NONE |
| Confidentiality: COMPLETE |
| Integrity: COMPLETE |
| Availability: COMPLETE |
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