CVE-2024-50281
Vulnerability from cvelistv5
Published
2024-11-19 01:30
Modified
2024-12-19 09:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation When sealing or unsealing a key blob we currently do not wait for the AEAD cipher operation to finish and simply return after submitting the request. If there is some load on the system we can exit before the cipher operation is done and the buffer we read from/write to is already removed from the stack. This will e.g. result in NULL pointer dereference errors in the DCP driver during blob creation. Fix this by waiting for the AEAD cipher operation to finish before resuming the seal and unseal calls.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04de7589e0a95167d803ecadd115235ba2c14997Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c75e0272289eae18c5379518a9c56ef31d65cc7dPatch
Impacted products
Vendor Product Version
Linux Linux Version: 6.11
Show details on NVD website

To clipboard 

{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/keys/trusted-keys/trusted_dcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.11"
            },
            {
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              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.11.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation\n\nWhen sealing or unsealing a key blob we currently do not wait for\nthe AEAD cipher operation to finish and simply return after submitting\nthe request. If there is some load on the system we can exit before\nthe cipher operation is done and the buffer we read from/write to\nis already removed from the stack. This will e.g. result in NULL\npointer dereference errors in the DCP driver during blob creation.\n\nFix this by waiting for the AEAD cipher operation to finish before\nresuming the seal and unseal calls."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:37:13.699Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c75e0272289eae18c5379518a9c56ef31d65cc7d"
        },
        {
          "url": "https://git.kernel.org/stable/c/04de7589e0a95167d803ecadd115235ba2c14997"
        }
      ],
      "title": "KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50281",
    "datePublished": "2024-11-19T01:30:23.275Z",
    "dateReserved": "2024-10-21T19:36:19.983Z",
    "dateUpdated": "2024-12-19T09:37:13.699Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50281\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-19T02:16:30.413\",\"lastModified\":\"2024-11-21T19:27:19.097\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nKEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation\\n\\nWhen sealing or unsealing a key blob we currently do not wait for\\nthe AEAD cipher operation to finish and simply return after submitting\\nthe request. If there is some load on the system we can exit before\\nthe cipher operation is done and the buffer we read from/write to\\nis already removed from the stack. This will e.g. result in NULL\\npointer dereference errors in the DCP driver during blob creation.\\n\\nFix this by waiting for the AEAD cipher operation to finish before\\nresuming the seal and unseal calls.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KEYS: trusted: dcp: fix NULL dereference in AEAD cryptooperation Al sellar o desellar un blob de claves, actualmente no esperamos a que finalice la operaci\u00f3n de cifrado AEAD y simplemente regresamos despu\u00e9s de enviar la solicitud. Si hay alguna carga en el sistema, podemos salir antes de que finalice la operaci\u00f3n de cifrado y el b\u00fafer desde el que leemos/escribimos ya se elimin\u00f3 de la pila. Esto, por ejemplo, dar\u00e1 como resultado errores de desreferencia de puntero NULL en el controlador DCP durante la creaci\u00f3n del blob. Solucione esto esperando a que finalice la operaci\u00f3n de cifrado AEAD antes de reanudar las llamadas de sellado y dessellado.\"}],\"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\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.8\",\"matchCriteriaId\":\"728427FE-4653-45EF-AA11-DA6A6AF58B8F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10.7:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6DF5EB33-2A8E-4768-B03E-823B0CCF32EF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"24B88717-53F5-42AA-9B72-14C707639E3F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/04de7589e0a95167d803ecadd115235ba2c14997\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c75e0272289eae18c5379518a9c56ef31d65cc7d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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