CVE-2022-49492 (GCVE-0-2022-49492)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2026-05-11 19:00
VLAI
Title
nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags In nvme_alloc_admin_tags, the admin_q can be set to an error (typically -ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which is checked immediately after the call. However, when we return the error message up the stack, to nvme_reset_work the error takes us to nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(&dev->queues[0]). Here, we only check that the admin_q is non-NULL, rather than not an error or NULL, and begin quiescing a queue that never existed, leading to bad / NULL pointer dereference.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:38 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 8321b17789f614414206af07e17ce4751c95dc76 (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 9e649471b396fa0139d53919354ce1eace9b9a24 (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 8da2b7bdb47e94bbc4062a3978c708926bcb022c (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < f76729662650cd7bc8f8194e057af381370349a7 (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < af98940dd33c9f9e1beb4f71c0a39260100e2a65 (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 906c81dba8ee8057523859b5e1a2479e9fd34860 (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 7a28556082d1fbcbc599baf1c24252dfc73efefc (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 54a4c1e47d1b2585e74920399455bd9abbfb2bd7 (git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < da42761181627e9bdc37d18368b827948a583929 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.19
Unaffected: 0 , < 3.19 (semver)
Unaffected: 4.9.318 , ≤ 4.9.* (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.121 , ≤ 5.10.* (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags\n\nIn nvme_alloc_admin_tags, the admin_q can be set to an error (typically\n-ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which\nis checked immediately after the call. However, when we return the error\nmessage up the stack, to nvme_reset_work the error takes us to\nnvme_remove_dead_ctrl()\n  nvme_dev_disable()\n   nvme_suspend_queue(\u0026dev-\u003equeues[0]).\n\nHere, we only check that the admin_q is non-NULL, rather than not\nan error or NULL, and begin quiescing a queue that never existed, leading\nto bad / NULL pointer dereference."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvme-pci: corrige una desreferencia de puntero NULL en nvme_alloc_admin_tags En nvme_alloc_admin_tags, admin_q se puede configurar en un error (normalmente -ENOMEM) si la llamada blk_mq_init_queue no puede configurar la cola, que se comprueba inmediatamente despu\u00e9s de la llamada. Sin embargo, cuando devolvemos el mensaje de error a la pila, a nvme_reset_work el error nos lleva a nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(\u0026amp;dev-\u0026gt;queues[0]). Aqu\u00ed, solo comprobamos que admin_q no sea NULL, en lugar de no ser un error o NULL, y comenzamos a inactivar una cola que nunca existi\u00f3, lo que lleva a una desreferencia de puntero NULL incorrecta."
          }
        ],
        "id": "CVE-2022-49492",
        "lastModified": "2026-06-17T05:18:13.370",
        "metrics": {
          "cvssMetricV31": [
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              "cvssData": {
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          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
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            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
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              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:09:15+00:00",
      "cve": "CVE-2022-49492",
      "id": "CVE-2022-49492",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "321",
      "product_status:known_affected": "80",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49492.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:27:47Z",
      "cve": "CVE-2022-49492",
      "id": "CVE-2022-49492",
      "initial_release_date": "2025-02-27T03:06:01Z",
      "product_status:known_affected": "485",
      "product_status:known_not_affected": "189",
      "product_status:recommended": "363",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49492",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49492.json",
      "version": "67"
    },
    "vulnrichment": {
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                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-49492",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T19:38:56.150719Z",
                    "version": "2.0.3"
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            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-476",
                    "description": "CWE-476 NULL Pointer Dereference",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T16:48:42.617Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
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              ],
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            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
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              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "3.19"
                },
                {
                  "lessThan": "3.19",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.9.*",
                  "status": "unaffected",
                  "version": "4.9.318",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.14.*",
                  "status": "unaffected",
                  "version": "4.14.283",
                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "4.19.247",
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                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.198",
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                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.121",
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                {
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                  "status": "unaffected",
                  "version": "5.15.46",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.17.*",
                  "status": "unaffected",
                  "version": "5.17.14",
                  "versionType": "semver"
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                {
                  "lessThanOrEqual": "5.18.*",
                  "status": "unaffected",
                  "version": "5.18.3",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.19",
                  "versionType": "original_commit_for_fix"
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          ],
          "cpeApplicability": [
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              "nodes": [
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              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags\n\nIn nvme_alloc_admin_tags, the admin_q can be set to an error (typically\n-ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which\nis checked immediately after the call. However, when we return the error\nmessage up the stack, to nvme_reset_work the error takes us to\nnvme_remove_dead_ctrl()\n  nvme_dev_disable()\n   nvme_suspend_queue(\u0026dev-\u003equeues[0]).\n\nHere, we only check that the admin_q is non-NULL, rather than not\nan error or NULL, and begin quiescing a queue that never existed, leading\nto bad / NULL pointer dereference."
            }
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            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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              "url": "https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929"
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        "datePublished": "2025-02-26T02:13:28.820Z",
        "dateReserved": "2025-02-26T02:08:31.585Z",
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        "state": "PUBLISHED"
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.