CVE-2024-53214
Vulnerability from cvelistv5
Published
2024-12-27 13:49
Modified
2024-12-27 13:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Properly hide first-in-list PCIe extended capability There are cases where a PCIe extended capability should be hidden from the user. For example, an unknown capability (i.e., capability with ID greater than PCI_EXT_CAP_ID_MAX) or a capability that is intentionally chosen to be hidden from the user. Hiding a capability is done by virtualizing and modifying the 'Next Capability Offset' field of the previous capability so it points to the capability after the one that should be hidden. The special case where the first capability in the list should be hidden is handled differently because there is no previous capability that can be modified. In this case, the capability ID and version are zeroed while leaving the next pointer intact. This hides the capability and leaves an anchor for the rest of the capability list. However, today, hiding the first capability in the list is not done properly if the capability is unknown, as struct vfio_pci_core_device->pci_config_map is set to the capability ID during initialization but the capability ID is not properly checked later when used in vfio_config_do_rw(). This leads to the following warning [1] and to an out-of-bounds access to ecap_perms array. Fix it by checking cap_id in vfio_config_do_rw(), and if it is greater than PCI_EXT_CAP_ID_MAX, use an alternative struct perm_bits for direct read only access instead of the ecap_perms array. Note that this is safe since the above is the only case where cap_id can exceed PCI_EXT_CAP_ID_MAX (except for the special capabilities, which are already checked before). [1] WARNING: CPU: 118 PID: 5329 at drivers/vfio/pci/vfio_pci_config.c:1900 vfio_pci_config_rw+0x395/0x430 [vfio_pci_core] CPU: 118 UID: 0 PID: 5329 Comm: simx-qemu-syste Not tainted 6.12.0+ #1 (snip) Call Trace: <TASK> ? show_regs+0x69/0x80 ? __warn+0x8d/0x140 ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core] ? report_bug+0x18f/0x1a0 ? handle_bug+0x63/0xa0 ? exc_invalid_op+0x19/0x70 ? asm_exc_invalid_op+0x1b/0x20 ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core] ? vfio_pci_config_rw+0x244/0x430 [vfio_pci_core] vfio_pci_rw+0x101/0x1b0 [vfio_pci_core] vfio_pci_core_read+0x1d/0x30 [vfio_pci_core] vfio_device_fops_read+0x27/0x40 [vfio] vfs_read+0xbd/0x340 ? vfio_device_fops_unl_ioctl+0xbb/0x740 [vfio] ? __rseq_handle_notify_resume+0xa4/0x4b0 __x64_sys_pread64+0x96/0xc0 x64_sys_call+0x1c3d/0x20d0 do_syscall_64+0x4d/0x120 entry_SYSCALL_64_after_hwframe+0x76/0x7e
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06f2fcf49854ad05a09d09e0dbee6544fff04695
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0918f5643fc6c3f7801f4a22397d2cc09ba99207
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ef195178fb552478eb2587df4ad3be14ef76507
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4464e5aa3aa4574063640f1082f7d7e323af8eb4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c6502d944168cbd7e03a4a08ad6488f78d73485
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7d121f66b67921fb3b95e0ea9856bfba53733e91
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/949bee8065a85a5c6607c624dc05b5bc17119699
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9567bd34aa3b986736c290c5bcba47e0182ac47a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe4bf8d0b6716a423b16495d55b35d3fe515905d
Impacted products
Vendor Product Version
Linux Linux Version: 3.6
Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vfio/pci/vfio_pci_config.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4464e5aa3aa4574063640f1082f7d7e323af8eb4",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "7d121f66b67921fb3b95e0ea9856bfba53733e91",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "0918f5643fc6c3f7801f4a22397d2cc09ba99207",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "9567bd34aa3b986736c290c5bcba47e0182ac47a",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "6c6502d944168cbd7e03a4a08ad6488f78d73485",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "06f2fcf49854ad05a09d09e0dbee6544fff04695",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "949bee8065a85a5c6607c624dc05b5bc17119699",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "1ef195178fb552478eb2587df4ad3be14ef76507",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            },
            {
              "lessThan": "fe4bf8d0b6716a423b16495d55b35d3fe515905d",
              "status": "affected",
              "version": "89e1f7d4c66d85f42c3d52ea3866eb10cadf6153",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/vfio/pci/vfio_pci_config.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.6"
            },
            {
              "lessThan": "3.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.325",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/pci: Properly hide first-in-list PCIe extended capability\n\nThere are cases where a PCIe extended capability should be hidden from\nthe user. For example, an unknown capability (i.e., capability with ID\ngreater than PCI_EXT_CAP_ID_MAX) or a capability that is intentionally\nchosen to be hidden from the user.\n\nHiding a capability is done by virtualizing and modifying the \u0027Next\nCapability Offset\u0027 field of the previous capability so it points to the\ncapability after the one that should be hidden.\n\nThe special case where the first capability in the list should be hidden\nis handled differently because there is no previous capability that can\nbe modified. In this case, the capability ID and version are zeroed\nwhile leaving the next pointer intact. This hides the capability and\nleaves an anchor for the rest of the capability list.\n\nHowever, today, hiding the first capability in the list is not done\nproperly if the capability is unknown, as struct\nvfio_pci_core_device-\u003epci_config_map is set to the capability ID during\ninitialization but the capability ID is not properly checked later when\nused in vfio_config_do_rw(). This leads to the following warning [1] and\nto an out-of-bounds access to ecap_perms array.\n\nFix it by checking cap_id in vfio_config_do_rw(), and if it is greater\nthan PCI_EXT_CAP_ID_MAX, use an alternative struct perm_bits for direct\nread only access instead of the ecap_perms array.\n\nNote that this is safe since the above is the only case where cap_id can\nexceed PCI_EXT_CAP_ID_MAX (except for the special capabilities, which\nare already checked before).\n\n[1]\n\nWARNING: CPU: 118 PID: 5329 at drivers/vfio/pci/vfio_pci_config.c:1900 vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\nCPU: 118 UID: 0 PID: 5329 Comm: simx-qemu-syste Not tainted 6.12.0+ #1\n(snip)\nCall Trace:\n \u003cTASK\u003e\n ? show_regs+0x69/0x80\n ? __warn+0x8d/0x140\n ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\n ? report_bug+0x18f/0x1a0\n ? handle_bug+0x63/0xa0\n ? exc_invalid_op+0x19/0x70\n ? asm_exc_invalid_op+0x1b/0x20\n ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\n ? vfio_pci_config_rw+0x244/0x430 [vfio_pci_core]\n vfio_pci_rw+0x101/0x1b0 [vfio_pci_core]\n vfio_pci_core_read+0x1d/0x30 [vfio_pci_core]\n vfio_device_fops_read+0x27/0x40 [vfio]\n vfs_read+0xbd/0x340\n ? vfio_device_fops_unl_ioctl+0xbb/0x740 [vfio]\n ? __rseq_handle_notify_resume+0xa4/0x4b0\n __x64_sys_pread64+0x96/0xc0\n x64_sys_call+0x1c3d/0x20d0\n do_syscall_64+0x4d/0x120\n entry_SYSCALL_64_after_hwframe+0x76/0x7e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-27T13:49:59.555Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4464e5aa3aa4574063640f1082f7d7e323af8eb4"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d121f66b67921fb3b95e0ea9856bfba53733e91"
        },
        {
          "url": "https://git.kernel.org/stable/c/0918f5643fc6c3f7801f4a22397d2cc09ba99207"
        },
        {
          "url": "https://git.kernel.org/stable/c/9567bd34aa3b986736c290c5bcba47e0182ac47a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c6502d944168cbd7e03a4a08ad6488f78d73485"
        },
        {
          "url": "https://git.kernel.org/stable/c/06f2fcf49854ad05a09d09e0dbee6544fff04695"
        },
        {
          "url": "https://git.kernel.org/stable/c/949bee8065a85a5c6607c624dc05b5bc17119699"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ef195178fb552478eb2587df4ad3be14ef76507"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe4bf8d0b6716a423b16495d55b35d3fe515905d"
        }
      ],
      "title": "vfio/pci: Properly hide first-in-list PCIe extended capability",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53214",
    "datePublished": "2024-12-27T13:49:59.555Z",
    "dateReserved": "2024-11-19T17:17:25.023Z",
    "dateUpdated": "2024-12-27T13:49:59.555Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53214\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T14:15:29.337\",\"lastModified\":\"2024-12-27T14:15:29.337\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvfio/pci: Properly hide first-in-list PCIe extended capability\\n\\nThere are cases where a PCIe extended capability should be hidden from\\nthe user. For example, an unknown capability (i.e., capability with ID\\ngreater than PCI_EXT_CAP_ID_MAX) or a capability that is intentionally\\nchosen to be hidden from the user.\\n\\nHiding a capability is done by virtualizing and modifying the \u0027Next\\nCapability Offset\u0027 field of the previous capability so it points to the\\ncapability after the one that should be hidden.\\n\\nThe special case where the first capability in the list should be hidden\\nis handled differently because there is no previous capability that can\\nbe modified. In this case, the capability ID and version are zeroed\\nwhile leaving the next pointer intact. This hides the capability and\\nleaves an anchor for the rest of the capability list.\\n\\nHowever, today, hiding the first capability in the list is not done\\nproperly if the capability is unknown, as struct\\nvfio_pci_core_device-\u003epci_config_map is set to the capability ID during\\ninitialization but the capability ID is not properly checked later when\\nused in vfio_config_do_rw(). This leads to the following warning [1] and\\nto an out-of-bounds access to ecap_perms array.\\n\\nFix it by checking cap_id in vfio_config_do_rw(), and if it is greater\\nthan PCI_EXT_CAP_ID_MAX, use an alternative struct perm_bits for direct\\nread only access instead of the ecap_perms array.\\n\\nNote that this is safe since the above is the only case where cap_id can\\nexceed PCI_EXT_CAP_ID_MAX (except for the special capabilities, which\\nare already checked before).\\n\\n[1]\\n\\nWARNING: CPU: 118 PID: 5329 at drivers/vfio/pci/vfio_pci_config.c:1900 vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\\nCPU: 118 UID: 0 PID: 5329 Comm: simx-qemu-syste Not tainted 6.12.0+ #1\\n(snip)\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_regs+0x69/0x80\\n ? __warn+0x8d/0x140\\n ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\\n ? report_bug+0x18f/0x1a0\\n ? handle_bug+0x63/0xa0\\n ? exc_invalid_op+0x19/0x70\\n ? asm_exc_invalid_op+0x1b/0x20\\n ? vfio_pci_config_rw+0x395/0x430 [vfio_pci_core]\\n ? vfio_pci_config_rw+0x244/0x430 [vfio_pci_core]\\n vfio_pci_rw+0x101/0x1b0 [vfio_pci_core]\\n vfio_pci_core_read+0x1d/0x30 [vfio_pci_core]\\n vfio_device_fops_read+0x27/0x40 [vfio]\\n vfs_read+0xbd/0x340\\n ? vfio_device_fops_unl_ioctl+0xbb/0x740 [vfio]\\n ? __rseq_handle_notify_resume+0xa4/0x4b0\\n __x64_sys_pread64+0x96/0xc0\\n x64_sys_call+0x1c3d/0x20d0\\n do_syscall_64+0x4d/0x120\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06f2fcf49854ad05a09d09e0dbee6544fff04695\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0918f5643fc6c3f7801f4a22397d2cc09ba99207\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1ef195178fb552478eb2587df4ad3be14ef76507\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4464e5aa3aa4574063640f1082f7d7e323af8eb4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6c6502d944168cbd7e03a4a08ad6488f78d73485\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7d121f66b67921fb3b95e0ea9856bfba53733e91\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/949bee8065a85a5c6607c624dc05b5bc17119699\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9567bd34aa3b986736c290c5bcba47e0182ac47a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fe4bf8d0b6716a423b16495d55b35d3fe515905d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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