The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which…

Description

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.

Scores

EPSS (exploitation in 30 days)

0.51% · top 56% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.

Weakness

• n/a
• CWE-119 (opens in a new tab)All about CWE-119 and its CVEs

Affected products

• n/a

  • affected n/a

References (37)

• http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc7 (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2009:1672 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=84336d1a77ccd2c06a730ddd38e695c2324a7386 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d9959734a1949ea4f2427bd2d8b21ede6b2441c (opens in a new tab)x_refsource_CONFIRMx_transferred
• 36051 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• RHSA-2009:1540 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=517830 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ab5a91a8364c3d6fc617abc47cc81d162c01d90a (opens in a new tab)x_refsource_CONFIRMx_transferred
• USN-852-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 38794 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://patchwork.kernel.org/patch/36540/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=47d439e9fb8a81a90022cfa785bf1c36c4e2aff6 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://patchwork.kernel.org/patch/36539/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://kbase.redhat.com/faq/docs/DOC-18042 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=788084aba2ab7348257597496befcbccabdc98a3 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://eparis.livejournal.com/606.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://twitter.com/spendergrsec/statuses/3303390960 (opens in a new tab)x_refsource_MISCx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=511143 (opens in a new tab)x_refsource_CONFIRMx_transferred
• FEDORA-2009-9044 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• http://patchwork.kernel.org/patch/36649/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2009:1548 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://thread.gmane.org/gmane.linux.kernel.lsm/9075 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=a2551df7ec568d87793d2eea4ca744e86318f205 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 38834 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://danwalsh.livejournal.com/30084.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/jmorris/security-testing-2.6.git%3Ba=commit%3Bh=7c73875e7dda627040b12c19b01db634fa7f0fd1 (opens in a new tab)x_refsource_CONFIRMx_transferred
• oval:org.mitre.oval:def:9882 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://patchwork.kernel.org/patch/36650/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9c0d90103c7e0eb6e638e5b649e9f6d8d9c1b4b3 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [oss-security] 20090817 SELinux and mmap_min_addr behaviour (CVE-2009-2695) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• oval:org.mitre.oval:def:7144 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 36501 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8cf948e744e0218af604c32edecde10006dc8e9e (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-2005 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 37105 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2010-0528 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-2695](https://trackcve.app/badge/CVE-2009-2695.svg)](https://trackcve.app/cve/CVE-2009-2695)

Record last updated 7 Aug 2024, 05:59 UTC.