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CVE-2009-2695

Good to know:

Date: August 28, 2009

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.

Language: C

Severity Score

8.4

Related Resources (41)

Url: http://patchwork.kernel.org/patch/36650/

Url: http://twitter.com/spendergrsec/statuses/3303390960

Url: http://secunia.com/advisories/38834

Url: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ab5a91a8364c3d6fc617abc47cc81d162c01d90a

Url: http://thread.gmane.org/gmane.linux.kernel.lsm/9075

Url: http://www.openwall.com/lists/oss-security/2009/08/17/4

Url: http://secunia.com/advisories/38794

Url: http://kbase.redhat.com/faq/docs/DOC-18042

Url: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8cf948e744e0218af604c32edecde10006dc8e9e

Url: http://patchwork.kernel.org/patch/36539/

Url: http://secunia.com/advisories/37105

Url: http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=84336d1a77ccd2c06a730ddd38e695c2324a7386

Url: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9c0d90103c7e0eb6e638e5b649e9f6d8d9c1b4b3

Url: http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=47d439e9fb8a81a90022cfa785bf1c36c4e2aff6

Url: http://www.redhat.com/support/errata/RHSA-2009-1672.html

Url: http://www.ubuntu.com/usn/USN-852-1

Url: https://bugzilla.redhat.com/show_bug.cgi?id=511143

Url: http://www.debian.org/security/2010/dsa-2005

Url: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=788084aba2ab7348257597496befcbccabdc98a3

Url: http://lists.vmware.com/pipermail/security-announce/2010/000082.html

Url: https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html

Url: http://patchwork.kernel.org/patch/36540/

Url: https://rhn.redhat.com/errata/RHSA-2009-1540.html

Url: http://eparis.livejournal.com/606.html

Url: http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=7c73875e7dda627040b12c19b01db634fa7f0fd1

Url: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d9959734a1949ea4f2427bd2d8b21ede6b2441c

Url: http://www.vupen.com/english/advisories/2010/0528

Url: http://danwalsh.livejournal.com/30084.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2009-2695

Url: https://nvd.nist.gov/vuln/detail/CVE-2009-2695

Url: https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9882

Url: https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7144

Url: http://www.securityfocus.com/bid/36051

Url: http://secunia.com/advisories/36501

Url: http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc7

Url: http://patchwork.kernel.org/patch/36649/

Url: https://bugzilla.redhat.com/show_bug.cgi?id=517830

Url: https://access.redhat.com/security/cve/CVE-2009-2695

Url: https://rhn.redhat.com/errata/RHSA-2009-1548.html

Url: http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=a2551df7ec568d87793d2eea4ca744e86318f205

Url: https://www.mend.io/vulnerability-database/CVE-2009-2695

Severity Score

8.4

Weakness Type (CWE)

Buffer Errors

CWE-119

Top Fix

Upgrade Version

Upgrade to version v2.6.31-rc7

Learn More

CVSS v3.1

Base Score:	8.4
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.2
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

Mend.io Vulnerability Database

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CVE-2009-2695

Good to know:

Date: August 28, 2009

Language: C

Severity Score

Related Resources (41)

Severity Score

Weakness Type (CWE)

Top Fix

Upgrade Version

CVSS v3.1

CVSS v2

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