CVE-2022-49826 (GCVE-0-2022-49826)
Vulnerability from cvelistv5
Published
2025-05-01 14:09
Modified
2025-05-04 08:46
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ata: libata-transport: fix double ata_host_put() in ata_tport_add() In the error path in ata_tport_add(), when calling put_device(), ata_tport_release() is called, it will put the refcount of 'ap->host'. And then ata_host_put() is called again, the refcount is decreased to 0, ata_host_release() is called, all ports are freed and set to null. When unbinding the device after failure, ata_host_stop() is called to release the resources, it leads a null-ptr-deref(), because all the ports all freed and null. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 CPU: 7 PID: 18671 Comm: modprobe Kdump: loaded Tainted: G E 6.1.0-rc3+ #8 pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ata_host_stop+0x3c/0x84 [libata] lr : release_nodes+0x64/0xd0 Call trace: ata_host_stop+0x3c/0x84 [libata] release_nodes+0x64/0xd0 devres_release_all+0xbc/0x1b0 device_unbind_cleanup+0x20/0x70 really_probe+0x158/0x320 __driver_probe_device+0x84/0x120 driver_probe_device+0x44/0x120 __driver_attach+0xb4/0x220 bus_for_each_dev+0x78/0xdc driver_attach+0x2c/0x40 bus_add_driver+0x184/0x240 driver_register+0x80/0x13c __pci_register_driver+0x4c/0x60 ahci_pci_driver_init+0x30/0x1000 [ahci] Fix this by removing redundant ata_host_put() in the error path.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2623c7a5f2799569d8bb05eb211da524a8144cb3
Version: 2623c7a5f2799569d8bb05eb211da524a8144cb3
Version: 2623c7a5f2799569d8bb05eb211da524a8144cb3
Version: 2623c7a5f2799569d8bb05eb211da524a8144cb3
Version: 2623c7a5f2799569d8bb05eb211da524a8144cb3
Version: 2623c7a5f2799569d8bb05eb211da524a8144cb3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/ata/libata-transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/ata/libata-transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "4.17"
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              "version": "0",
              "versionType": "semver"
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            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.225",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.156",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.15.80",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.267",
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                  "vulnerable": true
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                {
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nata: libata-transport: fix double ata_host_put() in ata_tport_add()\n\nIn the error path in ata_tport_add(), when calling put_device(),\nata_tport_release() is called, it will put the refcount of \u0027ap-\u003ehost\u0027.\n\nAnd then ata_host_put() is called again, the refcount is decreased\nto 0, ata_host_release() is called, all ports are freed and set to\nnull.\n\nWhen unbinding the device after failure, ata_host_stop() is called\nto release the resources, it leads a null-ptr-deref(), because all\nthe ports all freed and null.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000008\nCPU: 7 PID: 18671 Comm: modprobe Kdump: loaded Tainted: G            E      6.1.0-rc3+ #8\npstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : ata_host_stop+0x3c/0x84 [libata]\nlr : release_nodes+0x64/0xd0\nCall trace:\n ata_host_stop+0x3c/0x84 [libata]\n release_nodes+0x64/0xd0\n devres_release_all+0xbc/0x1b0\n device_unbind_cleanup+0x20/0x70\n really_probe+0x158/0x320\n __driver_probe_device+0x84/0x120\n driver_probe_device+0x44/0x120\n __driver_attach+0xb4/0x220\n bus_for_each_dev+0x78/0xdc\n driver_attach+0x2c/0x40\n bus_add_driver+0x184/0x240\n driver_register+0x80/0x13c\n __pci_register_driver+0x4c/0x60\n ahci_pci_driver_init+0x30/0x1000 [ahci]\n\nFix this by removing redundant ata_host_put() in the error path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:46:15.287Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/30e12e2be27ac6c4be2af4163c70db381364706f"
        },
        {
          "url": "https://git.kernel.org/stable/c/bec9ded5404cb14e5f5470103d0973a2ff83d6a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac471468f7c16cda2525909946ca13ddbcd14000"
        },
        {
          "url": "https://git.kernel.org/stable/c/377ff82c33c0cb74562a353361b64b33c09562cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/865a6da40ba092c18292ae5f6194756131293745"
        },
        {
          "url": "https://git.kernel.org/stable/c/8c76310740807ade5ecdab5888f70ecb6d35732e"
        }
      ],
      "title": "ata: libata-transport: fix double ata_host_put() in ata_tport_add()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49826",
    "datePublished": "2025-05-01T14:09:46.145Z",
    "dateReserved": "2025-05-01T14:05:17.228Z",
    "dateUpdated": "2025-05-04T08:46:15.287Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49826\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:06.043\",\"lastModified\":\"2025-05-02T13:53:20.943\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nata: libata-transport: fix double ata_host_put() in ata_tport_add()\\n\\nIn the error path in ata_tport_add(), when calling put_device(),\\nata_tport_release() is called, it will put the refcount of \u0027ap-\u003ehost\u0027.\\n\\nAnd then ata_host_put() is called again, the refcount is decreased\\nto 0, ata_host_release() is called, all ports are freed and set to\\nnull.\\n\\nWhen unbinding the device after failure, ata_host_stop() is called\\nto release the resources, it leads a null-ptr-deref(), because all\\nthe ports all freed and null.\\n\\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000008\\nCPU: 7 PID: 18671 Comm: modprobe Kdump: loaded Tainted: G            E      6.1.0-rc3+ #8\\npstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\npc : ata_host_stop+0x3c/0x84 [libata]\\nlr : release_nodes+0x64/0xd0\\nCall trace:\\n ata_host_stop+0x3c/0x84 [libata]\\n release_nodes+0x64/0xd0\\n devres_release_all+0xbc/0x1b0\\n device_unbind_cleanup+0x20/0x70\\n really_probe+0x158/0x320\\n __driver_probe_device+0x84/0x120\\n driver_probe_device+0x44/0x120\\n __driver_attach+0xb4/0x220\\n bus_for_each_dev+0x78/0xdc\\n driver_attach+0x2c/0x40\\n bus_add_driver+0x184/0x240\\n driver_register+0x80/0x13c\\n __pci_register_driver+0x4c/0x60\\n ahci_pci_driver_init+0x30/0x1000 [ahci]\\n\\nFix this by removing redundant ata_host_put() in the error path.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ata: libata-transport: correcci\u00f3n de un error doble de ata_host_put() en ata_tport_add(). En la ruta de error de ata_tport_add(), al llamar a put_device(), se llama a ata_tport_release(), lo que resta el recuento de referencias de \u0027ap-\u0026gt;host\u0027. A continuaci\u00f3n, se vuelve a llamar a ata_host_put(), el recuento de referencias se reduce a 0 y se llama a ata_host_release(), liberando todos los puertos y estableci\u00e9ndolos en nulo. Al desvincular el dispositivo tras un fallo, se llama a ata_host_stop() para liberar los recursos, lo que genera un error null-ptr-deref(), ya que todos los puertos est\u00e1n liberados y en nulo. No se puede manejar la desreferencia del puntero NULL del n\u00facleo en la direcci\u00f3n virtual 0000000000000008 CPU: 7 PID: 18671 Comm: modprobe Kdump: cargado Contaminado: GE 6.1.0-rc3+ #8 pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ata_host_stop+0x3c/0x84 [libata] lr : release_nodes+0x64/0xd0 Rastreo de llamadas: ata_host_stop+0x3c/0x84 [libata] release_nodes+0x64/0xd0 devres_release_all+0xbc/0x1b0 device_unbind_cleanup+0x20/0x70 really_probe+0x158/0x320 __driver_probe_device+0x84/0x120 driver_probe_device+0x44/0x120 __driver_attach+0xb4/0x220 bus_for_each_dev+0x78/0xdc driver_attach+0x2c/0x40 bus_add_driver+0x184/0x240 driver_register+0x80/0x13c __pci_register_driver+0x4c/0x60 ahci_pci_driver_init+0x30/0x1000 [ahci] Solucione esto eliminando ata_host_put() redundante en la ruta de error.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/30e12e2be27ac6c4be2af4163c70db381364706f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/377ff82c33c0cb74562a353361b64b33c09562cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/865a6da40ba092c18292ae5f6194756131293745\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8c76310740807ade5ecdab5888f70ecb6d35732e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ac471468f7c16cda2525909946ca13ddbcd14000\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bec9ded5404cb14e5f5470103d0973a2ff83d6a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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