{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49196",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-04T18:03:23.162575Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-01T17:19:08.367Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/platforms/pseries/pci_dlpar.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "33d39efb61a84e055ca2386157d39ebbdf6b7d31",
              "status": "affected",
              "version": "2dd9c11b9d4dfbd6c070eab7b81197f65e82f1a0",
              "versionType": "git"
            },
            {
              "lessThan": "403f9e0bc5535a0a5184d1352fa3a70e6ffacb6f",
              "status": "affected",
              "version": "2dd9c11b9d4dfbd6c070eab7b81197f65e82f1a0",
              "versionType": "git"
            },
            {
              "lessThan": "895ca4ae1f72e0a0160ab162723e59c9f265ec93",
              "status": "affected",
              "version": "2dd9c11b9d4dfbd6c070eab7b81197f65e82f1a0",
              "versionType": "git"
            },
            {
              "lessThan": "fe2640bd7a62f1f7c3f55fbda31084085075bc30",
              "status": "affected",
              "version": "2dd9c11b9d4dfbd6c070eab7b81197f65e82f1a0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/platforms/pseries/pci_dlpar.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries: Fix use after free in remove_phb_dynamic()\n\nIn remove_phb_dynamic() we use \u0026phb-\u003eio_resource, after we\u0027ve called\ndevice_unregister(\u0026host_bridge-\u003edev). But the unregister may have freed\nphb, because pcibios_free_controller_deferred() is the release function\nfor the host_bridge.\n\nIf there are no outstanding references when we call device_unregister()\nthen phb will be freed out from under us.\n\nThis has gone mainly unnoticed, but with slub_debug and page_poison\nenabled it can lead to a crash:\n\n  PID: 7574   TASK: c0000000d492cb80  CPU: 13  COMMAND: \"drmgr\"\n   #0 [c0000000e4f075a0] crash_kexec at c00000000027d7dc\n   #1 [c0000000e4f075d0] oops_end at c000000000029608\n   #2 [c0000000e4f07650] __bad_page_fault at c0000000000904b4\n   #3 [c0000000e4f076c0] do_bad_slb_fault at c00000000009a5a8\n   #4 [c0000000e4f076f0] data_access_slb_common_virt at c000000000008b30\n   Data SLB Access [380] exception frame:\n   R0:  c000000000167250    R1:  c0000000e4f07a00    R2:  c000000002a46100\n   R3:  c000000002b39ce8    R4:  00000000000000c0    R5:  00000000000000a9\n   R6:  3894674d000000c0    R7:  0000000000000000    R8:  00000000000000ff\n   R9:  0000000000000100    R10: 6b6b6b6b6b6b6b6b    R11: 0000000000008000\n   R12: c00000000023da80    R13: c0000009ffd38b00    R14: 0000000000000000\n   R15: 000000011c87f0f0    R16: 0000000000000006    R17: 0000000000000003\n   R18: 0000000000000002    R19: 0000000000000004    R20: 0000000000000005\n   R21: 000000011c87ede8    R22: 000000011c87c5a8    R23: 000000011c87d3a0\n   R24: 0000000000000000    R25: 0000000000000001    R26: c0000000e4f07cc8\n   R27: c00000004d1cc400    R28: c0080000031d00e8    R29: c00000004d23d800\n   R30: c00000004d1d2400    R31: c00000004d1d2540\n   NIP: c000000000167258    MSR: 8000000000009033    OR3: c000000000e9f474\n   CTR: 0000000000000000    LR:  c000000000167250    XER: 0000000020040003\n   CCR: 0000000024088420    MQ:  0000000000000000    DAR: 6b6b6b6b6b6b6ba3\n   DSISR: c0000000e4f07920     Syscall Result: fffffffffffffff2\n   [NIP  : release_resource+56]\n   [LR   : release_resource+48]\n   #5 [c0000000e4f07a00] release_resource at c000000000167258  (unreliable)\n   #6 [c0000000e4f07a30] remove_phb_dynamic at c000000000105648\n   #7 [c0000000e4f07ab0] dlpar_remove_slot at c0080000031a09e8 [rpadlpar_io]\n   #8 [c0000000e4f07b50] remove_slot_store at c0080000031a0b9c [rpadlpar_io]\n   #9 [c0000000e4f07be0] kobj_attr_store at c000000000817d8c\n  #10 [c0000000e4f07c00] sysfs_kf_write at c00000000063e504\n  #11 [c0000000e4f07c20] kernfs_fop_write_iter at c00000000063d868\n  #12 [c0000000e4f07c70] new_sync_write at c00000000054339c\n  #13 [c0000000e4f07d10] vfs_write at c000000000546624\n  #14 [c0000000e4f07d60] ksys_write at c0000000005469f4\n  #15 [c0000000e4f07db0] system_call_exception at c000000000030840\n  #16 [c0000000e4f07e10] system_call_vectored_common at c00000000000c168\n\nTo avoid it, we can take a reference to the host_bridge-\u003edev until we\u0027re\ndone using phb. Then when we drop the reference the phb will be freed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-02-26T01:55:40.626Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/33d39efb61a84e055ca2386157d39ebbdf6b7d31"
        },
        {
          "url": "https://git.kernel.org/stable/c/403f9e0bc5535a0a5184d1352fa3a70e6ffacb6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/895ca4ae1f72e0a0160ab162723e59c9f265ec93"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe2640bd7a62f1f7c3f55fbda31084085075bc30"
        }
      ],
      "title": "powerpc/pseries: Fix use after free in remove_phb_dynamic()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49196",
    "datePublished": "2025-02-26T01:55:40.626Z",
    "dateReserved": "2025-02-26T01:49:39.290Z",
    "dateUpdated": "2025-05-01T17:19:08.367Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49196\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:56.677\",\"lastModified\":\"2025-03-25T15:07:33.423\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries: Fix use after free in remove_phb_dynamic()\\n\\nIn remove_phb_dynamic() we use \u0026phb-\u003eio_resource, after we\u0027ve called\\ndevice_unregister(\u0026host_bridge-\u003edev). But the unregister may have freed\\nphb, because pcibios_free_controller_deferred() is the release function\\nfor the host_bridge.\\n\\nIf there are no outstanding references when we call device_unregister()\\nthen phb will be freed out from under us.\\n\\nThis has gone mainly unnoticed, but with slub_debug and page_poison\\nenabled it can lead to a crash:\\n\\n  PID: 7574   TASK: c0000000d492cb80  CPU: 13  COMMAND: \\\"drmgr\\\"\\n   #0 [c0000000e4f075a0] crash_kexec at c00000000027d7dc\\n   #1 [c0000000e4f075d0] oops_end at c000000000029608\\n   #2 [c0000000e4f07650] __bad_page_fault at c0000000000904b4\\n   #3 [c0000000e4f076c0] do_bad_slb_fault at c00000000009a5a8\\n   #4 [c0000000e4f076f0] data_access_slb_common_virt at c000000000008b30\\n   Data SLB Access [380] exception frame:\\n   R0:  c000000000167250    R1:  c0000000e4f07a00    R2:  c000000002a46100\\n   R3:  c000000002b39ce8    R4:  00000000000000c0    R5:  00000000000000a9\\n   R6:  3894674d000000c0    R7:  0000000000000000    R8:  00000000000000ff\\n   R9:  0000000000000100    R10: 6b6b6b6b6b6b6b6b    R11: 0000000000008000\\n   R12: c00000000023da80    R13: c0000009ffd38b00    R14: 0000000000000000\\n   R15: 000000011c87f0f0    R16: 0000000000000006    R17: 0000000000000003\\n   R18: 0000000000000002    R19: 0000000000000004    R20: 0000000000000005\\n   R21: 000000011c87ede8    R22: 000000011c87c5a8    R23: 000000011c87d3a0\\n   R24: 0000000000000000    R25: 0000000000000001    R26: c0000000e4f07cc8\\n   R27: c00000004d1cc400    R28: c0080000031d00e8    R29: c00000004d23d800\\n   R30: c00000004d1d2400    R31: c00000004d1d2540\\n   NIP: c000000000167258    MSR: 8000000000009033    OR3: c000000000e9f474\\n   CTR: 0000000000000000    LR:  c000000000167250    XER: 0000000020040003\\n   CCR: 0000000024088420    MQ:  0000000000000000    DAR: 6b6b6b6b6b6b6ba3\\n   DSISR: c0000000e4f07920     Syscall Result: fffffffffffffff2\\n   [NIP  : release_resource+56]\\n   [LR   : release_resource+48]\\n   #5 [c0000000e4f07a00] release_resource at c000000000167258  (unreliable)\\n   #6 [c0000000e4f07a30] remove_phb_dynamic at c000000000105648\\n   #7 [c0000000e4f07ab0] dlpar_remove_slot at c0080000031a09e8 [rpadlpar_io]\\n   #8 [c0000000e4f07b50] remove_slot_store at c0080000031a0b9c [rpadlpar_io]\\n   #9 [c0000000e4f07be0] kobj_attr_store at c000000000817d8c\\n  #10 [c0000000e4f07c00] sysfs_kf_write at c00000000063e504\\n  #11 [c0000000e4f07c20] kernfs_fop_write_iter at c00000000063d868\\n  #12 [c0000000e4f07c70] new_sync_write at c00000000054339c\\n  #13 [c0000000e4f07d10] vfs_write at c000000000546624\\n  #14 [c0000000e4f07d60] ksys_write at c0000000005469f4\\n  #15 [c0000000e4f07db0] system_call_exception at c000000000030840\\n  #16 [c0000000e4f07e10] system_call_vectored_common at c00000000000c168\\n\\nTo avoid it, we can take a reference to the host_bridge-\u003edev until we\u0027re\\ndone using phb. Then when we drop the reference the phb will be freed.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries: Se corrige el uso despu\u00e9s de liberar en remove_phb_dynamic() En remove_phb_dynamic() usamos \u0026amp;phb-\u0026gt;io_resource, despu\u00e9s de haber llamado a device_unregister(\u0026amp;host_bridge-\u0026gt;dev). Pero la anulaci\u00f3n del registro puede haber liberado a phb, porque pcibios_free_controller_deferred() es la funci\u00f3n de liberaci\u00f3n para host_bridge. Si no hay referencias pendientes cuando llamamos a device_unregister(), phb se liberar\u00e1 de nosotros. Esto ha pasado desapercibido, pero con slub_debug y page_poison habilitados puede provocar un bloqueo: PID: 7574 TAREA: c0000000d492cb80 CPU: 13 COMANDO: \\\"drmgr\\\" #0 [c0000000e4f075a0] crash_kexec at c00000000027d7dc #1 [c0000000e4f075d0] oops_end at c000000000029608 #2 [c0000000e4f07650] __bad_page_fault at c0000000000904b4 #3 [c0000000e4f076c0] do_bad_slb_fault at c00000000009a5a8 #4 [c0000000e4f076f0] data_access_slb_common_virt en c000000000008b30 Marco de excepci\u00f3n de acceso a datos SLB [380]: R0: c000000000167250 R1: c0000000e4f07a00 R2: c000000002a46100 R3: c000000002b39ce8 R4: 00000000000000c0 R5: 00000000000000a9 R6: 3894674d000000c0 R7: 0000000000000000 R8: 000000000000000ff R9: 0000000000000100 R10: 6b6b6b6b6b6b6b6b R11: 0000000000008000 R12: c00000000023da80 R13: c0000009ffd38b00 R14: 0000000000000000 R15: 000000011c87f0f0 R16: 0000000000000006 R17: 0000000000000003 R18: 0000000000000002 R19: 0000000000000004 R20: 0000000000000005 R21: 000000011c87ede8 R22: 000000011c87c5a8 R23: 000000011c87d3a0 R24: 0000000000000000 R25: 0000000000000001 R26: c0000000e4f07cc8 R27: c00000004d1cc400 R28: c0080000031d00e8 R29: c00000004d23d800 R30: c00000004d1d2400 R31: c00000004d1d2540 PIP: c000000000167258 MSR: 8000000000009033 OR3: c000000000e9f474 CTR: 0000000000000000 LR: c000000000167250 XER: 0000000020040003 CCR: 0000000024088420 MQ: 0000000000000000 DAR: 6b6b6b6b6b6b6ba3 DSISR: c0000000e4f07920 Resultado de llamada al sistema: fffffffffffffff2 [NIP: release_resource+56] [LR: release_resource+48] #5 [c0000000e4f07a00] release_resource en c000000000167258 (no confiable) #6 [c0000000e4f07a30] remove_phb_dynamic en c000000000105648 #7 [c0000000e4f07ab0] dlpar_remove_slot en c0080000031a09e8 [rpadlpar_io] #8 [c0000000e4f07b50] remove_slot_store en c0080000031a0b9c [rpadlpar_io] #9 [c0000000e4f07be0] kobj_attr_store en c000000000817d8c #10 [c0000000e4f07c00] sysfs_kf_write en c00000000063e504 #11 [c0000000e4f07c20] kernfs_fop_write_iter en c00000000063d868 #12 [c0000000e4f07c70] new_sync_write en c00000000054339c #13 [c0000000e4f07d10] vfs_write en c000000000546624 #14 [c0000000e4f07d60] ksys_write en c0000000005469f4 #15 [c0000000e4f07db0] system_call_exception at c000000000030840 #16 [c0000000e4f07e10] system_call_vectored_common at c00000000000c168 Para evitarlo, podemos tomar una referencia a host_bridge-\u0026gt;dev hasta que terminemos de usar phb. Luego, cuando eliminemos la referencia, se liberar\u00e1 phb.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.16.39\",\"versionEndExcluding\":\"3.17\",\"matchCriteriaId\":\"BA789D31-0F96-422B-81E8-27E5D87B93D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.7.8\",\"versionEndExcluding\":\"5.15.33\",\"matchCriteriaId\":\"9CC2B4A2-19D0-4A85-94C5-B8A6D1F0DA6A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.19\",\"matchCriteriaId\":\"20C43679-0439-405A-B97F-685BEE50613B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"5.17.2\",\"matchCriteriaId\":\"210C679C-CF84-44A3-8939-E629C87E54BF\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/33d39efb61a84e055ca2386157d39ebbdf6b7d31\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/403f9e0bc5535a0a5184d1352fa3a70e6ffacb6f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/895ca4ae1f72e0a0160ab162723e59c9f265ec93\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fe2640bd7a62f1f7c3f55fbda31084085075bc30\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}