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CVE-2022-49010 (GCVE-0-2022-49010)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-05-11 18:51
VLAI
Title
hwmon: (coretemp) Check for null before removing sysfs attrs
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) Check for null before removing sysfs attrs If coretemp_add_core() gets an error then pdata->core_data[indx] is already NULL and has been kfreed. Don't pass that to sysfs_remove_group() as that will crash in sysfs_remove_group(). [Shortened for readability] [91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label' <cpu offline> [91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188 [91855.165103] #PF: supervisor read access in kernel mode [91855.194506] #PF: error_code(0x0000) - not-present page [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Call Trace: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Fix this by checking for NULL first.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:13 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < fb503d077ff7b43913503eaf72995d1239028b99 (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < 070d5ea4a0592a37ad96ce7f7b6b024f90bb009f (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < 280110db1a7d62ad635b103bafc3ae96e8bef75c (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < 89eecabe6a47403237f45aafd7d24f93cb973653 (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < f06e0cd01eab954bd5f2190c9faa79bb5357e05b (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < 7692700ac818866d138a8de555130a6e70e6ac16 (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < ae6c8b6e5d5628df1c475c0a8fca1465e205c95b (git)
Affected: 199e0de7f5df31a4fc485d4aaaf8a07718252ace , < a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a (git)
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Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 4.9.335 , ≤ 4.9.* (semver)
Unaffected: 4.14.301 , ≤ 4.14.* (semver)
Unaffected: 4.19.268 , ≤ 4.19.* (semver)
Unaffected: 5.4.226 , ≤ 5.4.* (semver)
Unaffected: 5.10.158 , ≤ 5.10.* (semver)
Unaffected: 5.15.82 , ≤ 5.15.* (semver)
Unaffected: 6.0.12 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (coretemp) Check for null before removing sysfs attrs\n\nIf coretemp_add_core() gets an error then pdata-\u003ecore_data[indx]\nis already NULL and has been kfreed. Don\u0027t pass that to\nsysfs_remove_group() as that will crash in sysfs_remove_group().\n\n[Shortened for readability]\n[91854.020159] sysfs: cannot create duplicate filename \u0027/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label\u0027\n\u003ccpu offline\u003e\n[91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188\n[91855.165103] #PF: supervisor read access in kernel mode\n[91855.194506] #PF: error_code(0x0000) - not-present page\n[91855.224445] PGD 0 P4D 0\n[91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI\n...\n[91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80\n...\n[91855.796571] Call Trace:\n[91855.810524]  coretemp_cpu_offline+0x12b/0x1dd [coretemp]\n[91855.841738]  ? coretemp_cpu_online+0x180/0x180 [coretemp]\n[91855.871107]  cpuhp_invoke_callback+0x105/0x4b0\n[91855.893432]  cpuhp_thread_fun+0x8e/0x150\n...\n\nFix this by checking for NULL first."
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          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hwmon: (coretemp) Verificar si hay valores nulos antes de eliminar los atributos de sysfs Si coretemp_add_core() obtiene un error, entonces pdata-\u0026gt;core_data[indx] ya es NULL y se ha liberado. No pase eso a sysfs_remove_group() ya que eso bloquear\u00e1 sysfs_remove_group(). [Abreviado para facilitar la lectura] [91854.020159] sysfs: no se puede crear un nombre de archivo duplicado \u0027/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label\u0027  [91855.126115] ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000188 [91855.165103] #PF: acceso de lectura del supervisor en modo kernel [91855.194506] #PF: error_code(0x0000) - p\u00e1gina no presente [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Seguimiento de llamadas: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Solucione esto comprobando primero si es NULL."
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      "id": "CVE-2022-49010",
      "lastModified": "2024-10-24T19:03:50.847",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (coretemp) Check for null before removing sysfs attrs\n\nIf coretemp_add_core() gets an error then pdata-\u003ecore_data[indx]\nis already NULL and has been kfreed. Don\u0027t pass that to\nsysfs_remove_group() as that will crash in sysfs_remove_group().\n\n[Shortened for readability]\n[91854.020159] sysfs: cannot create duplicate filename \u0027/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label\u0027\n\u003ccpu offline\u003e\n[91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188\n[91855.165103] #PF: supervisor read access in kernel mode\n[91855.194506] #PF: error_code(0x0000) - not-present page\n[91855.224445] PGD 0 P4D 0\n[91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI\n...\n[91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80\n...\n[91855.796571] Call Trace:\n[91855.810524]  coretemp_cpu_offline+0x12b/0x1dd [coretemp]\n[91855.841738]  ? coretemp_cpu_online+0x180/0x180 [coretemp]\n[91855.871107]  cpuhp_invoke_callback+0x105/0x4b0\n[91855.893432]  cpuhp_thread_fun+0x8e/0x150\n...\n\nFix this by checking for NULL first."
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hwmon: (coretemp) Verificar si hay valores nulos antes de eliminar los atributos de sysfs Si coretemp_add_core() obtiene un error, entonces pdata-\u0026gt;core_data[indx] ya es NULL y se ha liberado. No pase eso a sysfs_remove_group() ya que eso bloquear\u00e1 sysfs_remove_group(). [Abreviado para facilitar la lectura] [91854.020159] sysfs: no se puede crear un nombre de archivo duplicado \u0027/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label\u0027  [91855.126115] ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000188 [91855.165103] #PF: acceso de lectura del supervisor en modo kernel [91855.194506] #PF: error_code(0x0000) - p\u00e1gina no presente [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Seguimiento de llamadas: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Solucione esto comprobando primero si es NULL."
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                {
                  "lessThan": "3.0",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.9.*",
                  "status": "unaffected",
                  "version": "4.9.335",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.14.*",
                  "status": "unaffected",
                  "version": "4.14.301",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.19.*",
                  "status": "unaffected",
                  "version": "4.19.268",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.226",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.158",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.82",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.0.*",
                  "status": "unaffected",
                  "version": "6.0.12",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.1",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (coretemp) Check for null before removing sysfs attrs\n\nIf coretemp_add_core() gets an error then pdata-\u003ecore_data[indx]\nis already NULL and has been kfreed. Don\u0027t pass that to\nsysfs_remove_group() as that will crash in sysfs_remove_group().\n\n[Shortened for readability]\n[91854.020159] sysfs: cannot create duplicate filename \u0027/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label\u0027\n\u003ccpu offline\u003e\n[91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188\n[91855.165103] #PF: supervisor read access in kernel mode\n[91855.194506] #PF: error_code(0x0000) - not-present page\n[91855.224445] PGD 0 P4D 0\n[91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI\n...\n[91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80\n...\n[91855.796571] Call Trace:\n[91855.810524]  coretemp_cpu_offline+0x12b/0x1dd [coretemp]\n[91855.841738]  ? coretemp_cpu_online+0x180/0x180 [coretemp]\n[91855.871107]  cpuhp_invoke_callback+0x105/0x4b0\n[91855.893432]  cpuhp_thread_fun+0x8e/0x150\n...\n\nFix this by checking for NULL first."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-12-19T08:12:23.232Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99"
            },
            {
              "url": "https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f"
            },
            {
              "url": "https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c"
            },
            {
              "url": "https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653"
            },
            {
              "url": "https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b"
            },
            {
              "url": "https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16"
            },
            {
              "url": "https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b"
            },
            {
              "url": "https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a"
            }
          ],
          "title": "hwmon: (coretemp) Check for null before removing sysfs attrs",
          "x_generator": {
            "engine": "bippy-5f407fcff5a0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49010",
        "datePublished": "2024-10-21T20:06:21.423Z",
        "dateReserved": "2024-08-22T01:27:53.644Z",
        "dateUpdated": "2024-12-19T08:12:23.232Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.