{
  "public_date" : "2026-04-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: PCI: endpoint: pci-epf-vntb: Stop cmd_handler work in epf_ntb_epc_cleanup",
    "id" : "2461455",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2461455"
  },
  "cwe" : "CWE-366",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nPCI: endpoint: pci-epf-vntb: Stop cmd_handler work in epf_ntb_epc_cleanup\nDisable the delayed work before clearing BAR mappings and doorbells to\navoid running the handler after resources have been torn down.\nUnable to handle kernel paging request at virtual address ffff800083f46004\n[...]\nInternal error: Oops: 0000000096000007 [#1]  SMP\n[...]\nCall trace:\nepf_ntb_cmd_handler+0x54/0x200 [pci_epf_vntb] (P)\nprocess_one_work+0x154/0x3b0\nworker_thread+0x2c8/0x400\nkthread+0x148/0x210\nret_from_fork+0x10/0x20", "A flaw was found in the Linux kernel's `pci-epf-vntb` module. This vulnerability occurs due to improper handling of the `cmd_handler` work during the `epf_ntb_epc_cleanup` process. If the delayed work is not disabled before clearing BAR mappings and doorbells, the handler can attempt to access resources that have already been torn down. This can lead to a kernel paging request error and an internal system error, resulting in a Denial of Service (DoS)." ],
  "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-2026-31595\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31595\nhttps://lore.kernel.org/linux-cve-announce/2026042416-CVE-2026-31595-b754@gregkh/T" ],
  "name" : "CVE-2026-31595",
  "csaw" : false
}