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CVE-2022-49308 (GCVE-0-2022-49308)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2026-05-11 18:57
VLAI
Title
extcon: Modify extcon device to be created after driver data is set
Summary
In the Linux kernel, the following vulnerability has been resolved: extcon: Modify extcon device to be created after driver data is set Currently, someone can invoke the sysfs such as state_show() intermittently before dev_set_drvdata() is done. And it can be a cause of kernel Oops because of edev is Null at that time. So modified the driver registration to after setting drviver data. - Oops's backtrace. Backtrace: [<c067865c>] (state_show) from [<c05222e8>] (dev_attr_show) [<c05222c0>] (dev_attr_show) from [<c02c66e0>] (sysfs_kf_seq_show) [<c02c6648>] (sysfs_kf_seq_show) from [<c02c496c>] (kernfs_seq_show) [<c02c4938>] (kernfs_seq_show) from [<c025e2a0>] (seq_read) [<c025e11c>] (seq_read) from [<c02c50a0>] (kernfs_fop_read) [<c02c5064>] (kernfs_fop_read) from [<c0231cac>] (__vfs_read) [<c0231c5c>] (__vfs_read) from [<c0231ee0>] (vfs_read) [<c0231e34>] (vfs_read) from [<c0232464>] (ksys_read) [<c02323f0>] (ksys_read) from [<c02324fc>] (sys_read) [<c02324e4>] (sys_read) from [<c00091d0>] (__sys_trace_return)
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < 6e721f3ad0535b24f19a62420f4da95212cf069c (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < cb81ea998c461868d1168411a867d8ffee12f23f (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < d472c78cc82999d07bd09193a6718016ce9cd386 (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < abf3b222614f49f98e606fccdd269161c0d70204 (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < 368e68ad6da4317fc4170e8d92b51c13d1bfe7a7 (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < 35ff1ac55d301efb3f467cf5426faaeb3452994b (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < 033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c (git)
Affected: de55d8716ac50a356cea736c29bb7db5ac3d0190 , < 5dcc2afe716d69f5112ce035cb14f007461ff189 (git)
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Linux Linux Affected: 3.5
Unaffected: 0 , < 3.5 (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.122 , ≤ 5.10.* (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nextcon: Modify extcon device to be created after driver data is set\n\nCurrently, someone can invoke the sysfs such as state_show()\nintermittently before dev_set_drvdata() is done.\nAnd it can be a cause of kernel Oops because of edev is Null at that time.\nSo modified the driver registration to after setting drviver data.\n\n- Oops\u0027s backtrace.\n\nBacktrace:\n[\u003cc067865c\u003e] (state_show) from [\u003cc05222e8\u003e] (dev_attr_show)\n[\u003cc05222c0\u003e] (dev_attr_show) from [\u003cc02c66e0\u003e] (sysfs_kf_seq_show)\n[\u003cc02c6648\u003e] (sysfs_kf_seq_show) from [\u003cc02c496c\u003e] (kernfs_seq_show)\n[\u003cc02c4938\u003e] (kernfs_seq_show) from [\u003cc025e2a0\u003e] (seq_read)\n[\u003cc025e11c\u003e] (seq_read) from [\u003cc02c50a0\u003e] (kernfs_fop_read)\n[\u003cc02c5064\u003e] (kernfs_fop_read) from [\u003cc0231cac\u003e] (__vfs_read)\n[\u003cc0231c5c\u003e] (__vfs_read) from [\u003cc0231ee0\u003e] (vfs_read)\n[\u003cc0231e34\u003e] (vfs_read) from [\u003cc0232464\u003e] (ksys_read)\n[\u003cc02323f0\u003e] (ksys_read) from [\u003cc02324fc\u003e] (sys_read)\n[\u003cc02324e4\u003e] (sys_read) from [\u003cc00091d0\u003e] (__sys_trace_return)"
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        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/6e721f3ad0535b24f19a62420f4da95212cf069c"
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          "url": "https://git.kernel.org/stable/c/cb81ea998c461868d1168411a867d8ffee12f23f"
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/5dcc2afe716d69f5112ce035cb14f007461ff189"
        }
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      "title": "extcon: Modify extcon device to be created after driver data is set",
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    "cveId": "CVE-2022-49308",
    "datePublished": "2025-02-26T02:10:39.648Z",
    "dateReserved": "2025-02-26T02:08:31.536Z",
    "dateUpdated": "2026-05-11T18:57:10.523Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49308\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:07.607\",\"lastModified\":\"2026-06-17T05:17:40.273\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nextcon: Modify extcon device to be created after driver data is set\\n\\nCurrently, someone can invoke the sysfs such as state_show()\\nintermittently before dev_set_drvdata() is done.\\nAnd it can be a cause of kernel Oops because of edev is Null at that time.\\nSo modified the driver registration to after setting drviver data.\\n\\n- Oops\u0027s backtrace.\\n\\nBacktrace:\\n[\u003cc067865c\u003e] (state_show) from [\u003cc05222e8\u003e] (dev_attr_show)\\n[\u003cc05222c0\u003e] (dev_attr_show) from [\u003cc02c66e0\u003e] (sysfs_kf_seq_show)\\n[\u003cc02c6648\u003e] (sysfs_kf_seq_show) from [\u003cc02c496c\u003e] (kernfs_seq_show)\\n[\u003cc02c4938\u003e] (kernfs_seq_show) from [\u003cc025e2a0\u003e] (seq_read)\\n[\u003cc025e11c\u003e] (seq_read) from [\u003cc02c50a0\u003e] (kernfs_fop_read)\\n[\u003cc02c5064\u003e] (kernfs_fop_read) from [\u003cc0231cac\u003e] (__vfs_read)\\n[\u003cc0231c5c\u003e] (__vfs_read) from [\u003cc0231ee0\u003e] (vfs_read)\\n[\u003cc0231e34\u003e] (vfs_read) from [\u003cc0232464\u003e] (ksys_read)\\n[\u003cc02323f0\u003e] (ksys_read) from [\u003cc02324fc\u003e] (sys_read)\\n[\u003cc02324e4\u003e] (sys_read) from [\u003cc00091d0\u003e] (__sys_trace_return)\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: extcon: Modificar el dispositivo extcon para que se cree despu\u00e9s de que se configuren los datos del controlador. Actualmente, alguien puede invocar el sysfs como state_show() de forma intermitente antes de que se realice dev_set_drvdata(). Y puede ser una causa de errores del kernel debido a que edev es Null en ese momento. Por lo tanto, se modific\u00f3 el registro del controlador despu\u00e9s de configurar los datos del controlador. - Ups, el backtrace. Rastreo inverso: [] (mostrar estado) desde [] (mostrar atributo de desarrollo) [] (mostrar atributo de desarrollo) desde [] (mostrar secuencia de sysfs_kf_seq) [] (mostrar secuencia de sysfs_kf_seq) desde [] (mostrar secuencia de kernfs) [] (mostrar secuencia de kernfs) desde [] (leer secuencia) [] (leer secuencia) desde [] (leer secuencia de kernfs_fop) [] (kernfs_fop_read) desde [] (__vfs_read) [] (__vfs_read) desde [] (vfs_read) [] (vfs_read) desde [] (ksys_read) [] (ksys_read) desde [] (sys_read) [] (sys_read) desde [] (__sys_trace_return)\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/extcon/extcon.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"6e721f3ad0535b24f19a62420f4da95212cf069c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"cb81ea998c461868d1168411a867d8ffee12f23f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"d472c78cc82999d07bd09193a6718016ce9cd386\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"abf3b222614f49f98e606fccdd269161c0d70204\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"368e68ad6da4317fc4170e8d92b51c13d1bfe7a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"35ff1ac55d301efb3f467cf5426faaeb3452994b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"de55d8716ac50a356cea736c29bb7db5ac3d0190\",\"lessThan\":\"5dcc2afe716d69f5112ce035cb14f007461ff189\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/extcon/extcon.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.283\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.247\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.198\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.122\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.47\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.15\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.4\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.14.283\",\"matchCriteriaId\":\"42074657-A7B6-4740-88B7-67B440018C1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.247\",\"matchCriteriaId\":\"B8CFA0F4-2D75-41F4-9753-87944A08B53B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.198\",\"matchCriteriaId\":\"3EC49633-14DE-4EBD-BB80-76AE2E3EABB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.122\",\"matchCriteriaId\":\"1B42AA01-44D8-4572-95E6-FF8E374CF9C5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.47\",\"matchCriteriaId\":\"FC042EE3-4864-4325-BE0B-4BCDBF11AA61\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.15\",\"matchCriteriaId\":\"53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:04:45+00:00",
      "cve": "CVE-2022-49308",
      "id": "CVE-2022-49308",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "70",
      "product_status:known_not_affected": "126",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: extcon: Modify extcon device to be created after driver data is set",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49308.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:27:56Z",
      "cve": "CVE-2022-49308",
      "id": "CVE-2022-49308",
      "initial_release_date": "2025-02-27T03:09:03Z",
      "product_status:known_affected": "501",
      "product_status:known_not_affected": "175",
      "product_status:recommended": "263",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49308",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49308.json",
      "version": "57"
    }
  }
}



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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

Author Source Type Date Other

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.


Related by attack behaviour

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.