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 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.
Key facts
- CVSS score
- 7.2 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:L/AC:L/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-119
- EPSS score
- 0.5% (44th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-2687)
- Published
- August 28, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-2687 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
- linux / linux kernel
and 265 more…
References
- http://danwalsh.livejournal.com/30084.html(Exploit)
- http://eparis.livejournal.com/606.html
- http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=47d439e9fb8a81a90022cfa785bf1c36c4e2aff6
- http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=7c73875e7dda627040b12c19b01db634fa7f0fd1
- http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=84336d1a77ccd2c06a730ddd38e695c2324a7386
- http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=a2551df7ec568d87793d2eea4ca744e86318f205
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d9959734a1949ea4f2427bd2d8b21ede6b2441c
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=788084aba2ab7348257597496befcbccabdc98a3
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8cf948e744e0218af604c32edecde10006dc8e9e
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9c0d90103c7e0eb6e638e5b649e9f6d8d9c1b4b3
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ab5a91a8364c3d6fc617abc47cc81d162c01d90a
- http://kbase.redhat.com/faq/docs/DOC-18042
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- http://patchwork.kernel.org/patch/36539/
- http://patchwork.kernel.org/patch/36540/
- http://patchwork.kernel.org/patch/36649/(Patch)
- http://patchwork.kernel.org/patch/36650/
- http://secunia.com/advisories/36501(Vendor Advisory)
- http://secunia.com/advisories/37105
- http://secunia.com/advisories/38794
- http://secunia.com/advisories/38834
- http://thread.gmane.org/gmane.linux.kernel.lsm/9075
- http://twitter.com/spendergrsec/statuses/3303390960
- http://www.debian.org/security/2010/dsa-2005
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc7
- http://www.openwall.com/lists/oss-security/2009/08/17/4
- http://www.redhat.com/support/errata/RHSA-2009-1672.html
- http://www.securityfocus.com/bid/36051(Patch)
- http://www.ubuntu.com/usn/USN-852-1
- http://www.vupen.com/english/advisories/2010/0528
- https://bugzilla.redhat.com/show_bug.cgi?id=511143
- https://bugzilla.redhat.com/show_bug.cgi?id=517830
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7144
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9882
- https://rhn.redhat.com/errata/RHSA-2009-1540.html
- https://rhn.redhat.com/errata/RHSA-2009-1548.html
- https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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