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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2009-08-28T15:00:00
Updated: 2024-08-07T05:59:57.063Z
Reserved: 2009-08-05T00:00:00
Link: CVE-2009-2695
Vulnrichment
No data.
NVD
Status : Modified
Published: 2009-08-28T15:30:00.627
Modified: 2024-11-21T01:05:32.110
Link: CVE-2009-2695
Redhat