{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26709"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/iommu: Fix the missing iommu_group_put() during platform domain attach\n\nThe function spapr_tce_platform_iommu_attach_dev() is missing to call\niommu_group_put() when the domain is already set. This refcount leak\nshows up with BUG_ON() during DLPAR remove operation as:\n\n  KernelBug: Kernel bug in state \u0027None\u0027: kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!\n  Oops: Exception in kernel mode, sig: 5 [#1]\n  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries\n  \u003csnip\u003e\n  Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries\n  NIP:  c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000\n  REGS: c0000013aed5f840 TRAP: 0700   Tainted: G          I         (6.8.0-rc3-autotest-g99bd3cb0d12e)\n  MSR:  8000000000029033 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  CR: 44002402  XER: 20040000\n  CFAR: c000000000a0d170 IRQMASK: 0\n  ...\n  NIP iommu_reconfig_notifier+0x94/0x200\n  LR  iommu_reconfig_notifier+0x8c/0x200\n  Call Trace:\n    iommu_reconfig_notifier+0x8c/0x200 (unreliable)\n    notifier_call_chain+0xb8/0x19c\n    blocking_notifier_call_chain+0x64/0x98\n    of_reconfig_notify+0x44/0xdc\n    of_detach_node+0x78/0xb0\n    ofdt_write.part.0+0x86c/0xbb8\n    proc_reg_write+0xf4/0x150\n    vfs_write+0xf8/0x488\n    ksys_write+0x84/0x140\n    system_call_exception+0x138/0x330\n    system_call_vectored_common+0x15c/0x2ec\n\nThe patch adds the missing iommu_group_put() call.",
      "id": "GSD-2024-26709",
      "modified": "2024-02-20T06:02:29.281629Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26709",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "a8ca9fc9134c",
                          "version_value": "c90fdea9cac9"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "6.7"
                              },
                              {
                                "lessThan": "6.7",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.7.*",
                                "status": "unaffected",
                                "version": "6.7.6",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "6.8",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/iommu: Fix the missing iommu_group_put() during platform domain attach\n\nThe function spapr_tce_platform_iommu_attach_dev() is missing to call\niommu_group_put() when the domain is already set. This refcount leak\nshows up with BUG_ON() during DLPAR remove operation as:\n\n  KernelBug: Kernel bug in state \u0027None\u0027: kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!\n  Oops: Exception in kernel mode, sig: 5 [#1]\n  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries\n  \u003csnip\u003e\n  Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries\n  NIP:  c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000\n  REGS: c0000013aed5f840 TRAP: 0700   Tainted: G          I         (6.8.0-rc3-autotest-g99bd3cb0d12e)\n  MSR:  8000000000029033 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  CR: 44002402  XER: 20040000\n  CFAR: c000000000a0d170 IRQMASK: 0\n  ...\n  NIP iommu_reconfig_notifier+0x94/0x200\n  LR  iommu_reconfig_notifier+0x8c/0x200\n  Call Trace:\n    iommu_reconfig_notifier+0x8c/0x200 (unreliable)\n    notifier_call_chain+0xb8/0x19c\n    blocking_notifier_call_chain+0x64/0x98\n    of_reconfig_notify+0x44/0xdc\n    of_detach_node+0x78/0xb0\n    ofdt_write.part.0+0x86c/0xbb8\n    proc_reg_write+0xf4/0x150\n    vfs_write+0xf8/0x488\n    ksys_write+0x84/0x140\n    system_call_exception+0x138/0x330\n    system_call_vectored_common+0x15c/0x2ec\n\nThe patch adds the missing iommu_group_put() call."
          }
        ]
      },
      "generator": {
        "engine": "bippy-d3b290d2becc"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c"
          },
          {
            "name": "https://git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/iommu: Fix the missing iommu_group_put() during platform domain attach\n\nThe function spapr_tce_platform_iommu_attach_dev() is missing to call\niommu_group_put() when the domain is already set. This refcount leak\nshows up with BUG_ON() during DLPAR remove operation as:\n\n  KernelBug: Kernel bug in state \u0027None\u0027: kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!\n  Oops: Exception in kernel mode, sig: 5 [#1]\n  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries\n  \u003csnip\u003e\n  Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries\n  NIP:  c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000\n  REGS: c0000013aed5f840 TRAP: 0700   Tainted: G          I         (6.8.0-rc3-autotest-g99bd3cb0d12e)\n  MSR:  8000000000029033 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  CR: 44002402  XER: 20040000\n  CFAR: c000000000a0d170 IRQMASK: 0\n  ...\n  NIP iommu_reconfig_notifier+0x94/0x200\n  LR  iommu_reconfig_notifier+0x8c/0x200\n  Call Trace:\n    iommu_reconfig_notifier+0x8c/0x200 (unreliable)\n    notifier_call_chain+0xb8/0x19c\n    blocking_notifier_call_chain+0x64/0x98\n    of_reconfig_notify+0x44/0xdc\n    of_detach_node+0x78/0xb0\n    ofdt_write.part.0+0x86c/0xbb8\n    proc_reg_write+0xf4/0x150\n    vfs_write+0xf8/0x488\n    ksys_write+0x84/0x140\n    system_call_exception+0x138/0x330\n    system_call_vectored_common+0x15c/0x2ec\n\nThe patch adds the missing iommu_group_put() call."
          }
        ],
        "id": "CVE-2024-26709",
        "lastModified": "2024-04-03T17:24:18.150",
        "metrics": {},
        "published": "2024-04-03T15:15:53.440",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}