{
  "public_date" : "2026-05-06T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: net: lapbether: handle NETDEV_PRE_TYPE_CHANGE",
    "id" : "2467009",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2467009"
  },
  "cwe" : "CWE-1287",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnet: lapbether: handle NETDEV_PRE_TYPE_CHANGE\nlapbeth_data_transmit() expects the underlying device type\nto be ARPHRD_ETHER.\nReturning NOTIFY_BAD from lapbeth_device_event() makes sure\nbonding driver can not break this expectation.", "A flaw was found in the Linux kernel's `lapbether` network driver. This vulnerability occurs because the `lapbeth_data_transmit()` function expects a specific underlying device type, and without proper handling of network device type changes, this expectation can be violated. This could lead to unexpected behavior or system instability, potentially resulting in a denial of service." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "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" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-43103\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43103\nhttps://lore.kernel.org/linux-cve-announce/2026050622-CVE-2026-43103-85e9@gregkh/T" ],
  "name" : "CVE-2026-43103",
  "csaw" : false
}