PRIOn knowledge basePRION:CVE-2009-2695Null pointer dereference
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.
References
danwalsh.livejournal.com/30084.html
eparis.livejournal.com/606.html
git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=47d439e9fb8a81a90022cfa785bf1c36c4e2aff6
git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=7c73875e7dda627040b12c19b01db634fa7f0fd1
git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=84336d1a77ccd2c06a730ddd38e695c2324a7386
git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=a2551df7ec568d87793d2eea4ca744e86318f205
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1d9959734a1949ea4f2427bd2d8b21ede6b2441c
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=788084aba2ab7348257597496befcbccabdc98a3
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8cf948e744e0218af604c32edecde10006dc8e9e
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9c0d90103c7e0eb6e638e5b649e9f6d8d9c1b4b3
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ab5a91a8364c3d6fc617abc47cc81d162c01d90a
kbase.redhat.com/faq/docs/DOC-18042
lists.vmware.com/pipermail/security-announce/2010/000082.html
patchwork.kernel.org/patch/36539/
patchwork.kernel.org/patch/36540/
patchwork.kernel.org/patch/36649/
patchwork.kernel.org/patch/36650/
secunia.com/advisories/36501
secunia.com/advisories/37105
secunia.com/advisories/38794
secunia.com/advisories/38834
thread.gmane.org/gmane.linux.kernel.lsm/9075
www.debian.org/security/2010/dsa-2005
www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc7
www.openwall.com/lists/oss-security/2009/08/17/4
www.redhat.com/support/errata/RHSA-2009-1672.html
www.securityfocus.com/bid/36051
www.ubuntu.com/usn/USN-852-1
www.vupen.com/english/advisories/2010/0528
bugzilla.redhat.com/show_bug.cgi?id=511143
bugzilla.redhat.com/show_bug.cgi?id=517830
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7144
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9882
rhn.redhat.com/errata/RHSA-2009-1540.html
rhn.redhat.com/errata/RHSA-2009-1548.html
twitter.com/spendergrsec/statuses/3303390960
www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
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