1. Home
  2. CVE Database
  3. CVE-2009-2695
HIGH · 7.2

CVE-2009-2695

The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointe...

Vulnerability Description

The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointer dereference vulnerabilities, related to (1) the default configuration of the allow_unconfined_mmap_low boolean in SELinux on Red Hat Enterprise Linux (RHEL) 5, (2) an error that causes allow_unconfined_mmap_low to be ignored in the unconfined_t domain, (3) lack of a requirement for the CAP_SYS_RAWIO capability for these mmap operations, and (4) interaction between the mmap_min_addr protection mechanism and certain application programs.

CVSS Score

7.2

HIGH

AV:L/AC:L/Au:N/C:C/I:C/A:C
Confidentiality
COMPLETE
Integrity
COMPLETE
Availability
COMPLETE

Affected Products

VendorProductVersions
LinuxLinux Kernel<= 2.6.31

Related Weaknesses (CWE)

CWE-119

References

FAQ

What is CVE-2009-2695?

CVE-2009-2695 is a vulnerability with a CVSS score of 7.2 (HIGH). The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointe...

How severe is CVE-2009-2695?

CVE-2009-2695 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2009-2695?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.