CVE-2021-47095 (GCVE-0-2021-47095)

Vulnerability from cvelistv5 – Published: 2024-03-04 18:10 – Updated: 2025-05-04 07:04
VLAI?
Title
ipmi: ssif: initialize ssif_info->client early
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c , < 8efd6a3391f7b0b19fb0c38e50add06ca30c94af (git)
Affected: c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c , < 1f6ab847461ce7dd89ae9db2dd4658c993355d7c (git)
Affected: c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c , < 77a7311ca167aa5b7055c549a940a56e73ee5f29 (git)
Affected: c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c , < 34f35f8f14bc406efc06ee4ff73202c6fd245d15 (git)
Create a notification for this product.
    Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.4.169 , ≤ 5.4.* (semver)
Unaffected: 5.10.89 , ≤ 5.10.* (semver)
Unaffected: 5.15.12 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.169",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.89",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.12",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": "2025-05-04T07:04:04.589Z",
        "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-1.2.0"
      }
    }
  },
  "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": "2025-05-04T07:04:04.589Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"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\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.950Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47095\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-04T20:32:21.801460Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:41.271Z\"}}], \"cna\": {\"title\": \"ipmi: ssif: initialize ssif_info-\u003eclient early\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c\", \"lessThan\": \"8efd6a3391f7b0b19fb0c38e50add06ca30c94af\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c\", \"lessThan\": \"1f6ab847461ce7dd89ae9db2dd4658c993355d7c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c\", \"lessThan\": \"77a7311ca167aa5b7055c549a940a56e73ee5f29\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c4436c9149c5d2bc0c49ab57ec85c75ea1c4d61c\", \"lessThan\": \"34f35f8f14bc406efc06ee4ff73202c6fd245d15\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/char/ipmi/ipmi_ssif.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.169\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.89\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/char/ipmi/ipmi_ssif.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.169\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.89\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.12\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"5.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:04:04.589Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47095\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:04:04.589Z\", \"dateReserved\": \"2024-02-29T22:33:44.300Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-04T18:10:46.553Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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 observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.