{
  "threat_severity" : "Moderate",
  "public_date" : "2024-04-02T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: tunnels: fix out of bounds access when building IPv6 PMTU error",
    "id" : "2272793",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2272793"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-125",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ntunnels: fix out of bounds access when building IPv6 PMTU error\nIf the ICMPv6 error is built from a non-linear skb we get the following\nsplat,\nBUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240\nRead of size 4 at addr ffff88811d402c80 by task netperf/820\nCPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543\n...\nkasan_report+0xd8/0x110\ndo_csum+0x220/0x240\ncsum_partial+0xc/0x20\nskb_tunnel_check_pmtu+0xeb9/0x3280\nvxlan_xmit_one+0x14c2/0x4080\nvxlan_xmit+0xf61/0x5c00\ndev_hard_start_xmit+0xfb/0x510\n__dev_queue_xmit+0x7cd/0x32a0\nbr_dev_queue_push_xmit+0x39d/0x6a0\nUse skb_checksum instead of csum_partial who cannot deal with non-linear\nSKBs.", "A flaw was found in the Linux kernel. This issue occurs due to the improper handling of non-linear skbs (socket buffers) when calculating checksums for ICMPv6 PMTU error messages. This vulnerability can lead to out-of-bounds access, potentially causing memory corruption or crashes." ],
  "statement" : "Red Hat Enterprise Linux 9 is not affected by this vulnerability, as it was already patched in the 9.4.0 release.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-09-24T00:00:00Z",
    "advisory" : "RHSA-2024:7001",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-553.22.1.rt7.363.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-09-24T00:00:00Z",
    "advisory" : "RHSA-2024:7000",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.22.1.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "release_date" : "2024-09-24T00:00:00Z",
    "advisory" : "RHSA-2024:6993",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.8",
    "package" : "kernel-0:4.18.0-477.74.1.el8_8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2024-26665\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26665\nhttps://lore.kernel.org/linux-cve-announce/2024040224-CVE-2024-26665-5daa@gregkh/T" ],
  "name" : "CVE-2024-26665",
  "csaw" : false
}