{
  "threat_severity" : "Important",
  "public_date" : "2009-06-26T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: personality: fix PER_CLEAR_ON_SETID",
    "id" : "511171",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=511171"
  },
  "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 personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR)." ],
  "affected_release" : [ {
    "product_name" : "MRG for RHEL-5",
    "release_date" : "2009-11-03T00:00:00Z",
    "advisory" : "RHSA-2009:1540",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:1::el5",
    "package" : "kernel-rt-0:2.6.24.7-137.el5rt"
  }, {
    "product_name" : "Red Hat Enterprise Linux 3",
    "release_date" : "2009-11-03T00:00:00Z",
    "advisory" : "RHSA-2009:1550",
    "cpe" : "cpe:/o:redhat:enterprise_linux:3",
    "package" : "kernel-0:2.4.21-63.EL"
  }, {
    "product_name" : "Red Hat Enterprise Linux 4",
    "release_date" : "2009-09-15T00:00:00Z",
    "advisory" : "RHSA-2009:1438",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4",
    "package" : "kernel-0:2.6.9-89.0.11.EL"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2009-08-04T00:00:00Z",
    "advisory" : "RHSA-2009:1193",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-128.4.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5.2 Z Stream",
    "release_date" : "2010-02-02T00:00:00Z",
    "advisory" : "RHSA-2010:0079",
    "cpe" : "cpe:/o:redhat:rhel_eus:5.2",
    "package" : "kernel-0:2.6.18-92.1.35.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5.3.Z - Server Only",
    "release_date" : "2009-08-04T00:00:00Z",
    "advisory" : "RHSA-2009:1193",
    "cpe" : "cpe:/o:redhat:rhel_eus:5.3",
    "package" : "kernel-0:2.6.18-128.4.1.el5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2009-1895\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-1895" ],
  "name" : "CVE-2009-1895",
  "csaw" : false
}