{
  "threat_severity" : "Important",
  "public_date" : "2025-06-30T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error",
    "id" : "2375529",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2375529"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-754",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nsunrpc: handle SVC_GARBAGE during svc auth processing as auth error\ntianshuo han reported a remotely-triggerable crash if the client sends a\nkernel RPC server a specially crafted packet. If decoding the RPC reply\nfails in such a way that SVC_GARBAGE is returned without setting the\nrq_accept_statp pointer, then that pointer can be dereferenced and a\nvalue stored there.\nIf it's the first time the thread has processed an RPC, then that\npointer will be set to NULL and the kernel will crash. In other cases,\nit could create a memory scribble.\nThe server sunrpc code treats a SVC_GARBAGE return from svc_authenticate\nor pg_authenticate as if it should send a GARBAGE_ARGS reply. RFC 5531\nsays that if authentication fails that the RPC should be rejected\ninstead with a status of AUTH_ERR.\nHandle a SVC_GARBAGE return as an AUTH_ERROR, with a reason of\nAUTH_BADCRED instead of returning GARBAGE_ARGS in that case. This\nsidesteps the whole problem of touching the rpc_accept_statp pointer in\nthis situation and avoids the crash.", "A flaw was found in the Linux kernel, where a specially crafted RPC packet could cause data corruption or trigger a system panic. This flaw allows a remote attacker who can make RPC calls to send an intentionally malformed packet, potentially compromising system integrity or causing a denial of service (DoS)." ],
  "statement" : "This vulnerability is caused by incorrect error handling in the Linux kernel's RPC code. When a malformed packet is sent during RPC authentication, the kernel does not correctly set an authorization status field pointer to a sensible value. When that pointer is later dereferenced, an affected system might either crash due to a NULL pointer dereference, or garbage data might be written to another memory address, impacting system integrity.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2025-07-21T00:00:00Z",
    "advisory" : "RHSA-2025:11428",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.0",
    "package" : "kernel-0:6.12.0-55.22.1.el10_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-07-21T00:00:00Z",
    "advisory" : "RHSA-2025:11411",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-570.28.1.el9_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-07-21T00:00:00Z",
    "advisory" : "RHSA-2025:11411",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-570.28.1.el9_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-08-05T00:00:00Z",
    "advisory" : "RHSA-2025:12976",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Extended Update Support",
    "release_date" : "2025-07-28T00:00:00Z",
    "advisory" : "RHSA-2025:11810",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.4",
    "package" : "kernel-0:5.14.0-427.79.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.4 Extended Update Support",
    "release_date" : "2025-08-05T00:00:00Z",
    "advisory" : "RHSA-2025:12977",
    "cpe" : "cpe:/o:redhat:rhel_eus:9.4",
    "package" : "kpatch-patch"
  } ],
  "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 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-2025-38089\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38089\nhttps://lore.kernel.org/linux-cve-announce/2025063055-CVE-2025-38089-0a36@gregkh/T" ],
  "name" : "CVE-2025-38089",
  "mitigation" : {
    "value" : "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible. Additionally, to protect against this and other similar vulnerabilities, ensure appropriate access controls are in place to prevent unauthorized use of RPC-based services.\nIf SunRPC not being used, then to mitigate this issue to prevent the sunrpc module from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically.",
    "lang" : "en:us"
  },
  "csaw" : false
}