cve-2024-50195
Vulnerability from cvelistv5
Published
2024-11-08 05:54
Modified
2024-12-19 09:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: posix-clock: Fix missing timespec64 check in pc_clock_settime() As Andrew pointed out, it will make sense that the PTP core checked timespec64 struct's tv_sec and tv_nsec range before calling ptp->info->settime64(). As the man manual of clock_settime() said, if tp.tv_sec is negative or tp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL, which include dynamic clocks which handles PTP clock, and the condition is consistent with timespec64_valid(). As Thomas suggested, timespec64_valid() only check the timespec is valid, but not ensure that the time is in a valid range, so check it ahead using timespec64_valid_strict() in pc_clock_settime() and return -EINVAL if not valid. There are some drivers that use tp->tv_sec and tp->tv_nsec directly to write registers without validity checks and assume that the higher layer has checked it, which is dangerous and will benefit from this, such as hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(), and some drivers can remove the checks of itself.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512Patch
Impacted products
Vendor Product Version
Linux Linux Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
Version: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2
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   Linux Linux Version: 2.6.39
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/time/posix-clock.c"
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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": "2.6.39"
            },
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              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
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              "versionType": "original_commit_for_fix"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\n\nAs Andrew pointed out, it will make sense that the PTP core\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\nptp-\u003einfo-\u003esettime64().\n\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\nwhich include dynamic clocks which handles PTP clock, and the condition is\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\nonly check the timespec is valid, but not ensure that the time is\nin a valid range, so check it ahead using timespec64_valid_strict()\nin pc_clock_settime() and return -EINVAL if not valid.\n\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\nwrite registers without validity checks and assume that the higher layer\nhas checked it, which is dangerous and will benefit from this, such as\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\nand some drivers can remove the checks of itself."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:35:13.429Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512"
        },
        {
          "url": "https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01"
        },
        {
          "url": "https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264"
        },
        {
          "url": "https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540"
        }
      ],
      "title": "posix-clock: Fix missing timespec64 check in pc_clock_settime()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50195",
    "datePublished": "2024-11-08T05:54:10.183Z",
    "dateReserved": "2024-10-21T19:36:19.968Z",
    "dateUpdated": "2024-12-19T09:35:13.429Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50195\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-08T06:15:16.280\",\"lastModified\":\"2024-11-29T20:26:50.623\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\\n\\nAs Andrew pointed out, it will make sense that the PTP core\\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\\nptp-\u003einfo-\u003esettime64().\\n\\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\\nwhich include dynamic clocks which handles PTP clock, and the condition is\\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\\nonly check the timespec is valid, but not ensure that the time is\\nin a valid range, so check it ahead using timespec64_valid_strict()\\nin pc_clock_settime() and return -EINVAL if not valid.\\n\\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\\nwrite registers without validity checks and assume that the higher layer\\nhas checked it, which is dangerous and will benefit from this, such as\\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\\nand some drivers can remove the checks of itself.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: posix-clock: Arreglar la comprobaci\u00f3n timespec64 faltante en pc_clock_settime() Como se\u00f1al\u00f3 Andrew, tendr\u00e1 sentido que el n\u00facleo PTP comprobara el rango tv_sec y tv_nsec de la estructura timespec64 antes de llamar a ptp-\u0026gt;info-\u0026gt;settime64(). Como dec\u00eda el manual de manual de clock_settime(), si tp.tv_sec es negativo o tp.tv_nsec est\u00e1 fuera del rango [0..999,999,999], deber\u00eda devolver EINVAL, que incluye relojes din\u00e1micos que manejan el reloj PTP, y la condici\u00f3n es consistente con timespec64_valid(). Como sugiri\u00f3 Thomas, timespec64_valid() solo comprueba que el timespec sea v\u00e1lido, pero no garantiza que el tiempo est\u00e9 en un rango v\u00e1lido, as\u00ed que compru\u00e9belo con antelaci\u00f3n usando timespec64_valid_strict() en pc_clock_settime() y devuelva -EINVAL si no es v\u00e1lido. Hay algunos controladores que usan tp-\u0026gt;tv_sec y tp-\u0026gt;tv_nsec directamente para escribir registros sin comprobaciones de validez y asumen que la capa superior lo ha comprobado, lo cual es peligroso y se beneficiar\u00e1 de esto, como hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(), y algunos controladores pueden eliminar las comprobaciones de s\u00ed mismos.\"}],\"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-754\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.39\",\"versionEndExcluding\":\"4.19.323\",\"matchCriteriaId\":\"5A3583A3-7039-4012-9458-F67912AED1CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.285\",\"matchCriteriaId\":\"B5A89369-320F-47FC-8695-56F61F87E4C0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.228\",\"matchCriteriaId\":\"9062315F-AB89-4ABE-8C13-B75927689F66\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.169\",\"matchCriteriaId\":\"18BEDAD6-86F8-457C-952F-C35698B3D07F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.114\",\"matchCriteriaId\":\"10FD2B3E-C7D9-4A9C-BD64-41877EDF88EB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.58\",\"matchCriteriaId\":\"6B9489BC-825E-4EEE-8D93-F93C801988C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.5\",\"matchCriteriaId\":\"6E62D61A-F704-44DB-A311-17B7534DA7BC\"},{\"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\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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