{
  "threat_severity" : "Low",
  "public_date" : "2010-12-09T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: install_special_mapping skips security_file_mmap check",
    "id" : "662189",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=662189"
  },
  "cvss" : {
    "cvss_base_score" : "2.1",
    "cvss_scoring_vector" : "AV:L/AC:L/Au:N/C:N/I:P/A:N",
    "status" : "verified"
  },
  "details" : [ "The install_special_mapping function in mm/mmap.c in the Linux kernel before 2.6.37-rc6 does not make an expected security_file_mmap function call, which allows local users to bypass intended mmap_min_addr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-language application." ],
  "statement" : "The Linux kernel as shipped with Red Hat Enterprise Linux 4 is not vulnerable because it checks for mmap_min_addr even in special cases.\nThe Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG have mmap_min_addr sysctl tunable set to 4096, and therefore are not affected by this issue. However, as a preventive measure (for example, for administrators who have increased mmap_min_addr), we have addressed this in Red Hat Enterprise Linux 5, 6 and MRG via https://rhn.redhat.com/errata/RHSA-2011-0429.html, https://rhn.redhat.com/errata/RHSA-2011-0421.html, and https://rhn.redhat.com/errata/RHSA-2011-0330.html.",
  "acknowledgement" : "Red Hat would like to thank Tavis Ormandy for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "MRG for RHEL-5",
    "release_date" : "2011-03-10T00:00:00Z",
    "advisory" : "RHSA-2011:0330",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:1::el5",
    "package" : "kernel-rt-0:2.6.33.7-rt29.55.el5rt"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2011-04-12T00:00:00Z",
    "advisory" : "RHSA-2011:0429",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-238.9.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2011-04-08T00:00:00Z",
    "advisory" : "RHSA-2011:0421",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-71.24.1.el6"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2010-4346\nhttps://nvd.nist.gov/vuln/detail/CVE-2010-4346" ],
  "name" : "CVE-2010-4346",
  "csaw" : false
}