{
  "cveId": "CVE-2026-80620",
  "url": "https://patchblox.com/security/cve/CVE-2026-80620",
  "summary": "CVE-2026-80620 is fixed in 56 products on 1 platform, first by ALAS2023-2026-2058, released August 17, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  Revert \u0022PCI/MSI: Unmap MSI-X region on error\u0022  T...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  Revert \u0022PCI/MSI: Unmap MSI-X region on error\u0022  This reverts commit 1a8d4c6ecb4c81261bcdf13556abd4a958eca202.  Commit 1a8d4c6ecb4c (\u0022PCI/MSI: Unmap MSI-X region on error\u0022) added an iounmap(dev-\u003Emsix_base) on the error path of msix_capability_init() to release the MSI-X region when msix_setup_interrupts() fails.  When msix_setup_interrupts() fails, the call chain is:    msix_setup_interrupts()     -\u003E __msix_setup_interrupts()          struct pci_dev *dev __free(free_msi_irqs) = __dev;          ...          return ret;  // __free cleanup fires on error  The __free(free_msi_irqs) cleanup calls pci_free_msi_irqs(), which already handles the unmap:    void pci_free_msi_irqs(struct pci_dev *dev)   {       pci_msi_teardown_msi_irqs(dev);       if (dev-\u003Emsix_base) {           iounmap(dev-\u003Emsix_base);   // already unmapped here           dev-\u003Emsix_base = NULL;     // and set to NULL       }   }  So dev-\u003Emsix_base is unmapped and set to NULL before msix_setup_interrupts() returns to msix_capability_init(). The \u0022goto out_unmap\u0022 introduced by commit 1a8d4c6ecb4c (\u0022PCI/MSI: Unmap MSI-X region on error\u0022) then calls iounmap() a second time on a NULL pointer.  This was reproduced on Intel Emerald Rapids (192 CPUs) while running tools/testing/selftests/kexec/test_kexec_jump.sh:    WARNING: CPU#44 at iounmap\u002B0x2a/0xe0   RIP: 0010:iounmap\u002B0x2a/0xe0   RDI: 0000000000000000   Call Trace:    msix_capability_init\u002B0x317/0x3f0    __pci_enable_msix_range\u002B0x21d/0x2c0    pci_alloc_irq_vectors_affinity\u002B0xa9/0x130    nvme_setup_io_queues\u002B0x2a8/0x420 [nvme]    nvme_reset_work\u002B0x151/0x340 [nvme]    ...  RDI=0 confirms iounmap() is called with NULL.  Restore the original \u0022goto out_disable\u0022 and leave the unmap to the existing __free(free_msi_irqs) cleanup.",
  "published": "2026-08-17T09:00:00Z",
  "severity": "important",
  "epss": 0.00215,
  "epssPercentile": 0.119,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.180-225.360",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.12.100-125.179",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.41-94.142",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.12-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.180-1",
      "fix": "DEBIAN-CVE-2026-80620",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80620",
      "released": "2026-08-29T00:46:20Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.100-1",
      "fix": "DEBIAN-CVE-2026-80620",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80620",
      "released": "2026-08-29T00:46:20Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-80620",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80620",
      "released": "2026-08-29T00:46:20Z"
    },
    {
      "platform": "linux",
      "product": "microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.1.180-225.360.amzn2023",
      "fix": "ALAS2023-2026-2058",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2058",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.12",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}