cve-2021-47095
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ipmi: ssif: initialize ssif_info->client early During probe ssif_info->client is dereferenced in error path. However, it is set when some of the error checking has already been done. This causes following kernel crash if an error path is taken: [ 30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present [ 30.657616][ T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088 ... [ 30.657723][ T674] pc : __dev_printk+0x28/0xa0 [ 30.657732][ T674] lr : _dev_err+0x7c/0xa0 ... [ 30.657772][ T674] Call trace: [ 30.657775][ T674] __dev_printk+0x28/0xa0 [ 30.657778][ T674] _dev_err+0x7c/0xa0 [ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e] [ 30.657791][ T674] i2c_device_probe+0x37c/0x3c0 ... Initialize ssif_info->client before any error path can be taken. Clear i2c_client data in the error path to prevent the dangling pointer from leaking.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af
Impacted products
Vendor Product Version
Linux Linux Version: 5.4
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47095",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-04T20:32:21.801460Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T17:22:07.482Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.950Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/ipmi/ipmi_ssif.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8efd6a3391f7b0b19fb0c38e50add06ca30c94af",
              "status": "affected",
              "version": "c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c",
              "versionType": "git"
            },
            {
              "lessThan": "1f6ab847461ce7dd89ae9db2dd4658c993355d7c",
              "status": "affected",
              "version": "c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c",
              "versionType": "git"
            },
            {
              "lessThan": "77a7311ca167aa5b7055c549a940a56e73ee5f29",
              "status": "affected",
              "version": "c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c",
              "versionType": "git"
            },
            {
              "lessThan": "34f35f8f14bc406efc06ee4ff73202c6fd245d15",
              "status": "affected",
              "version": "c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/ipmi/ipmi_ssif.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.169",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.89",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: ssif: initialize ssif_info-\u003eclient early\n\nDuring probe ssif_info-\u003eclient is dereferenced in error path. However,\nit is set when some of the error checking has already been done. This\ncauses following kernel crash if an error path is taken:\n\n[   30.645593][  T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present\n[   30.657616][  T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088\n...\n[   30.657723][  T674] pc : __dev_printk+0x28/0xa0\n[   30.657732][  T674] lr : _dev_err+0x7c/0xa0\n...\n[   30.657772][  T674] Call trace:\n[   30.657775][  T674]  __dev_printk+0x28/0xa0\n[   30.657778][  T674]  _dev_err+0x7c/0xa0\n[   30.657781][  T674]  ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]\n[   30.657791][  T674]  i2c_device_probe+0x37c/0x3c0\n...\n\nInitialize ssif_info-\u003eclient before any error path can be taken. Clear\ni2c_client data in the error path to prevent the dangling pointer from\nleaking."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T07:35:07.689Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29"
        },
        {
          "url": "https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15"
        }
      ],
      "title": "ipmi: ssif: initialize ssif_info-\u003eclient early",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47095",
    "datePublished": "2024-03-04T18:10:46.553Z",
    "dateReserved": "2024-02-29T22:33:44.300Z",
    "dateUpdated": "2024-12-19T07:35:07.689Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47095\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-04T18:15:07.907\",\"lastModified\":\"2024-11-21T06:35:23.263\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipmi: ssif: initialize ssif_info-\u003eclient early\\n\\nDuring probe ssif_info-\u003eclient is dereferenced in error path. However,\\nit is set when some of the error checking has already been done. This\\ncauses following kernel crash if an error path is taken:\\n\\n[   30.645593][  T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present\\n[   30.657616][  T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088\\n...\\n[   30.657723][  T674] pc : __dev_printk+0x28/0xa0\\n[   30.657732][  T674] lr : _dev_err+0x7c/0xa0\\n...\\n[   30.657772][  T674] Call trace:\\n[   30.657775][  T674]  __dev_printk+0x28/0xa0\\n[   30.657778][  T674]  _dev_err+0x7c/0xa0\\n[   30.657781][  T674]  ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]\\n[   30.657791][  T674]  i2c_device_probe+0x37c/0x3c0\\n...\\n\\nInitialize ssif_info-\u003eclient before any error path can be taken. Clear\\ni2c_client data in the error path to prevent the dangling pointer from\\nleaking.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipmi: ssif: inicializa ssif_info-\u0026gt;client temprano Durante la sonda, ssif_info-\u0026gt;client se desreferencia en la ruta de error. Sin embargo, se establece cuando ya se ha realizado parte de la verificaci\u00f3n de errores. Esto provoca el siguiente fallo del kernel si se toma una ruta de error: [30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: No sondeando, la interfaz ya est\u00e1 presente [30.657616][ T674] No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000088. [ 30.657723][ T674] pc : __dev_printk+0x28/0xa0 [ 30.657732][ T674] lr : _dev_err+0x7c/0xa0 ... [ 30.657772][ T674] Rastreo de llamadas: [ 30.657775][ T674] __dev_printk+0x28/0 xa0 [ 30.657778][ T674] _dev_err+0x7c/0xa0 [ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e] [ 30.65779 1][T674] i2c_device_probe+0x37c/0x3c0... Inicialice ssif_info-\u0026gt;client antes de que pueda aparecer cualquier ruta de error. ser tomado. Borre los datos de i2c_client en la ruta del error para evitar que se filtre el puntero colgante.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.