{
  "threat_severity" : "Moderate",
  "public_date" : "2011-07-27T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: gro: only reset frag0 when skb can be pulled",
    "id" : "726552",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=726552"
  },
  "cvss" : {
    "cvss_base_score" : "5.7",
    "cvss_scoring_vector" : "AV:A/AC:M/Au:N/C:N/I:N/A:C",
    "status" : "verified"
  },
  "details" : [ "The skb_gro_header_slow function in include/linux/netdevice.h in the Linux kernel before 2.6.39.4, when Generic Receive Offload (GRO) is enabled, resets certain fields in incorrect situations, which allows remote attackers to cause a denial of service (system crash) via crafted network traffic." ],
  "statement" : "This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not backport the upstream commit a5b1cf28 that introduced this issue. This has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1386.html, https://rhn.redhat.com/errata/RHSA-2011-1350.html, and https://rhn.redhat.com/errata/RHSA-2012-0010.html.",
  "acknowledgement" : "Red Hat would like to thank Brent Meshier for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2011-09-20T00:00:00Z",
    "advisory" : "RHSA-2011:1321",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-238.27.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2011-10-20T00:00:00Z",
    "advisory" : "RHSA-2011:1386",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-274.7.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2011-10-05T00:00:00Z",
    "advisory" : "RHSA-2011:1350",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-131.17.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "release_date" : "2012-01-10T00:00:00Z",
    "advisory" : "RHSA-2012:0010",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2:server:el6",
    "package" : "kernel-rt-0:2.6.33.9-rt31.79.el6rt"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 4",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2011-2723\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2723\nhttp://git.kernel.org/linus/17dd759c67f21e34f2156abcf415e1f60605a188" ],
  "name" : "CVE-2011-2723",
  "csaw" : false
}