{
  "threat_severity" : "Moderate",
  "public_date" : "2026-04-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown",
    "id" : "2461523",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2461523"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nPCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to perform later. This leads to an oops when .allow_link fails\nor when .drop_link is performed. The following is an example oops of the\nformer case:\nUnable to handle kernel paging request at virtual address dead000000000108\n[...]\n[dead000000000108] address between user and kernel address ranges\nInternal error: Oops: 0000000096000044 [#1]  SMP\n[...]\nCall trace:\npci_epc_remove_epf+0x78/0xe0 (P)\npci_primary_epc_epf_link+0x88/0xa8\nconfigfs_symlink+0x1f4/0x5a0\nvfs_symlink+0x134/0x1d8\ndo_symlinkat+0x88/0x138\n__arm64_sys_symlinkat+0x74/0xe0\n[...]\nRemove the helper, and drop pci_epc_put(). EPC device refcounting is\ntied to the configfs EPC group lifetime, and pci_epc_put() in the\n.drop_link path is sufficient.", "A flaw was found in the Linux kernel's PCI endpoint framework (pci-epf-vntb). This vulnerability arises from a duplicate resource teardown within the `epf_ntb_epc_destroy()` function. A local user could potentially trigger this flaw, leading to a kernel crash and a Denial of Service (DoS) for the affected system." ],
  "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-2026-31594\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31594\nhttps://lore.kernel.org/linux-cve-announce/2026042416-CVE-2026-31594-29aa@gregkh/T" ],
  "name" : "CVE-2026-31594",
  "csaw" : false
}