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

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2025-12-23 13:24
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
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
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)
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)
Create a notification for this product.
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\"https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7\"}, {\"url\": \"https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.318\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.283\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.247\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.198\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.121\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.46\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:39:05.167Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49492\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T19:46:43.988Z\", \"dateReserved\": \"2025-02-26T02:08:31.585Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:13:28.820Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.