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CVE-2009-1895

Publication date 16 July 2009

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

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).

Status

Package Ubuntu Release Status
linux 9.04 jaunty
Fixed 2.6.28-14.47
8.10 intrepid
Fixed 2.6.27-14.37
8.04 LTS hardy
Fixed 2.6.24-24.57
6.06 LTS dapper Not in release
linux-source-2.6.15 9.04 jaunty Not in release
8.10 intrepid Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

References

Related Ubuntu Security Notices (USN)

    • USN-807-1
    • Linux kernel vulnerabilities
    • 28 July 2009

Other references