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).
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-1844-1 | New Linux 2.6.24 packages fix several vulnerabilities |
Debian DSA |
DSA-1845-1 | New Linux 2.6.26 packages fix several vulnerabilities |
EUVD |
EUVD-2009-1890 | 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). |
Ubuntu USN |
USN-807-1 | Linux kernel vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-07T05:27:54.804Z
Reserved: 2009-06-02T00:00:00
Link: CVE-2009-1895
No data.
Status : Deferred
Published: 2009-07-16T15:30:00.703
Modified: 2025-04-09T00:30:58.490
Link: CVE-2009-1895
OpenCVE Enrichment
No data.
Debian DSA
EUVD
Ubuntu USN