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CVE-2009-2695Date: (C)2009-08-28   (M)2018-06-11


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 and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : CVSS Score : 7.2
Exploit Score: Exploit Score: 3.9
Impact Score: Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: Access Vector: LOCAL
Attack Complexity: Access Complexity: LOW
Privileges Required: Authentication: NONE
User Interaction: Confidentiality: COMPLETE
Scope: Integrity: COMPLETE
Confidentiality: Availability: COMPLETE
Integrity:  
Availability:  
  
Reference:
BID-36051
SECUNIA-36501
SECUNIA-37105
SECUNIA-38794
SECUNIA-38834
ADV-2010-0528
DSA-2005
FEDORA-2009-9044
RHSA-2009:1540
RHSA-2009:1548
RHSA-2009:1672
USN-852-1
http://www.openwall.com/lists/oss-security/2009/08/17/4
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://danwalsh.livejournal.com/30084.html
http://eparis.livejournal.com/606.html
http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=47d439e9fb8a81a90022cfa785bf1c36c4e2aff6
http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=7c73875e7dda627040b12c19b01db634fa7f0fd1
http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=84336d1a77ccd2c06a730ddd38e695c2324a7386
http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git;a=commit;h=a2551df7ec568d87793d2eea4ca744e86318f205
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1d9959734a1949ea4f2427bd2d8b21ede6b2441c
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=788084aba2ab7348257597496befcbccabdc98a3
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8cf948e744e0218af604c32edecde10006dc8e9e
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9c0d90103c7e0eb6e638e5b649e9f6d8d9c1b4b3
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ab5a91a8364c3d6fc617abc47cc81d162c01d90a
http://kbase.redhat.com/faq/docs/DOC-18042
http://patchwork.kernel.org/patch/36539/
http://patchwork.kernel.org/patch/36540/
http://patchwork.kernel.org/patch/36649/
http://patchwork.kernel.org/patch/36650/
http://thread.gmane.org/gmane.linux.kernel.lsm/9075
http://twitter.com/spendergrsec/statuses/3303390960
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc7
https://bugzilla.redhat.com/show_bug.cgi?id=511143
https://bugzilla.redhat.com/show_bug.cgi?id=517830

CPE    315
cpe:/o:linux:linux_kernel:2.6.23.1
cpe:/o:linux:linux_kernel:2.6.20.19
cpe:/o:linux:linux_kernel:2.6.23.2
cpe:/o:linux:linux_kernel:2.6.23.3
...
CWE    1
CWE-119
OVAL    8
oval:org.mitre.oval:def:7532
oval:org.secpod.oval:def:700430
oval:org.mitre.oval:def:7639
oval:org.secpod.oval:def:101648
...

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