{
  "threat_severity" : "Moderate",
  "public_date" : "2025-08-16T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: ipv6: mcast: Delay put pmc->idev in mld_del_delrec()",
    "id" : "2388941",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2388941"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
    "status" : "verified"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nipv6: mcast: Delay put pmc->idev in mld_del_delrec()\npmc->idev is still used in ip6_mc_clear_src(), so as mld_clear_delrec()\ndoes, the reference should be put after ip6_mc_clear_src() return." ],
  "statement" : "An IPv6 MLD bookkeeping bug freed pmc->idev before it was used in ip6_mc_clear_src(), causing a use-after-free in the multicast code path. A remote attacker on the same L2 segment could potentially trigger a kernel crash via crafted MLD activity, leading to DoS.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2025-09-15T00:00:00Z",
    "advisory" : "RHSA-2025:15782",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.0",
    "package" : "kernel-0:6.12.0-55.33.1.el10_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-09-15T00:00:00Z",
    "advisory" : "RHSA-2025:15740",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-570.44.1.el9_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-09-15T00:00:00Z",
    "advisory" : "RHSA-2025:15740",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-570.44.1.el9_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
    "release_date" : "2025-11-12T00:00:00Z",
    "advisory" : "RHSA-2025:21091",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.0",
    "package" : "kernel-0:5.14.0-70.153.1.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
    "release_date" : "2025-11-12T00:00:00Z",
    "advisory" : "RHSA-2025:21136",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.0::nfv",
    "package" : "kernel-rt-0:5.14.0-70.153.1.rt21.225.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "release_date" : "2025-10-20T00:00:00Z",
    "advisory" : "RHSA-2025:18280",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.2",
    "package" : "kernel-0:5.14.0-284.143.1.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "release_date" : "2025-10-20T00:00:00Z",
    "advisory" : "RHSA-2025:18279",
    "cpe" : "cpe:/a:redhat:rhel_e4s:9.2::nfv",
    "package" : "kernel-rt-0:5.14.0-284.143.1.rt14.428.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Extended Update Support",
    "release_date" : "2025-10-14T00:00:00Z",
    "advisory" : "RHSA-2025:17958",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.4",
    "package" : "kernel-0:5.14.0-427.94.1.el9_4"
  } ],
  "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" : "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" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-38550\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38550\nhttps://lore.kernel.org/linux-cve-announce/2025081628-CVE-2025-38550-9bfd@gregkh/T" ],
  "name" : "CVE-2025-38550",
  "csaw" : false
}