{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Disable auto-enable of exclusive INTx IRQ\n\nCurrently for devices requiring masking at the irqchip for INTx, ie.\ndevices without DisINTx support, the IRQ is enabled in request_irq()\nand subsequently disabled as necessary to align with the masked status\nflag.  This presents a window where the interrupt could fire between\nthese events, resulting in the IRQ incrementing the disable depth twice.\nThis would be unrecoverable for a user since the masked flag prevents\nnested enables through vfio.\n\nInstead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx\nis never auto-enabled, then unmask as required."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/vfio/pci/vfio_pci_intrs.c"
               ],
               "versions": [
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "26389925d6c2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "561d5e1998d5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "b7a2f0955ffc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "139dfcc4d723",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "2a4a666c4510",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "3b3491ad0f80",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "bf0bc84a20e6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "89e1f7d4c66d",
                     "lessThan": "fe9a7082684e",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/vfio/pci/vfio_pci_intrs.c"
               ],
               "versions": [
                  {
                     "version": "3.6",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "3.6",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.274",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.215",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.154",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.84",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.24",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.12",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.3",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351"
            },
            {
               "url": "https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5"
            },
            {
               "url": "https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438"
            },
            {
               "url": "https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060"
            },
            {
               "url": "https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2"
            },
            {
               "url": "https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda"
            },
            {
               "url": "https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec"
            },
            {
               "url": "https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43"
            }
         ],
         "title": "vfio/pci: Disable auto-enable of exclusive INTx IRQ",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-27437",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}