{
  "threat_severity" : "Moderate",
  "public_date" : "2026-05-01T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: net: mana: fix use-after-free in add_adev() error path",
    "id" : "2464449",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2464449"
  },
  "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-825",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnet: mana: fix use-after-free in add_adev() error path\nIf auxiliary_device_add() fails, add_adev() jumps to add_fail and calls\nauxiliary_device_uninit(adev).\nThe auxiliary device has its release callback set to adev_release(),\nwhich frees the containing struct mana_adev. Since adev is embedded in\nstruct mana_adev, the subsequent fall-through to init_fail and access\nto adev->id may result in a use-after-free.\nFix this by saving the allocated auxiliary device id in a local\nvariable before calling auxiliary_device_add(), and use that saved id\nin the cleanup path after auxiliary_device_uninit().", "A flaw was found in the Linux kernel's mana network driver. An issue in the error handling of the `add_adev()` function can lead to a use-after-free vulnerability. This occurs when memory is released prematurely but then accessed again, which could allow a local attacker to cause a system crash (denial of service) or potentially gain elevated access (privilege escalation)." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-06-20T00:00:00Z",
    "advisory" : "RHSA-2026:27288",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "kernel-0:6.12.0-211.26.1.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-06-19T00:00:00Z",
    "advisory" : "RHSA-2026:27354",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::nfv",
    "package" : "kernel-rt-0:4.18.0-553.136.1.rt7.477.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-06-19T00:00:00Z",
    "advisory" : "RHSA-2026:27353",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.136.1.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-06-11T00:00:00Z",
    "advisory" : "RHSA-2026:25217",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-687.15.1.el9_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-06-11T00:00:00Z",
    "advisory" : "RHSA-2026:25217",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-687.15.1.el9_8"
  } ],
  "package_state" : [ {
    "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 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-43056\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43056\nhttps://lore.kernel.org/linux-cve-announce/2026050108-CVE-2026-43056-fefd@gregkh/T" ],
  "name" : "CVE-2026-43056",
  "csaw" : false
}