{
  "threat_severity" : "Low",
  "public_date" : "2012-01-10T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: ext4: fix inconsistency in ext4_fill_flex_info()",
    "id" : "809687",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=809687"
  },
  "cvss" : {
    "cvss_base_score" : "4.0",
    "cvss_scoring_vector" : "AV:L/AC:H/Au:N/C:N/I:N/A:C",
    "status" : "verified"
  },
  "details" : [ "The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).  NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307." ],
  "statement" : "This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise MRG 2.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2012-11-13T00:00:00Z",
    "advisory" : "RHSA-2012:1445",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-308.20.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2012-12-18T00:00:00Z",
    "advisory" : "RHSA-2012:1580",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-279.19.1.el6"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 4",
    "fix_state" : "Will not fix",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "fix_state" : "Affected",
    "package_name" : "realtime-kernel",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2012-2100\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-2100" ],
  "name" : "CVE-2012-2100",
  "csaw" : false
}