cve-2024-50142
Vulnerability from cvelistv5
Published
2024-11-07 09:31
Modified
2024-12-19 09:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate new SA's prefixlen using SA family when sel.family is unset This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.") syzbot created an SA with usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0aPatch
Impacted products
Vendor Product Version
Linux Linux Version: 2.6.12
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/xfrm_user.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "2.6.12"
            },
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              "version": "0",
              "versionType": "semver"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: validate new SA\u0027s prefixlen using SA family when sel.family is unset\n\nThis expands the validation introduced in commit 07bf7908950a (\"xfrm:\nValidate address prefix lengths in the xfrm selector.\")\n\nsyzbot created an SA with\n    usersa.sel.family = AF_UNSPEC\n    usersa.sel.prefixlen_s = 128\n    usersa.family = AF_INET\n\nBecause of the AF_UNSPEC selector, verify_newsa_info doesn\u0027t put\nlimits on prefixlen_{s,d}. But then copy_from_user_state sets\nx-\u003esel.family to usersa.family (AF_INET). Do the same conversion in\nverify_newsa_info before validating prefixlen_{s,d}, since that\u0027s how\nprefixlen is going to be used later on."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:34:02.678Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73"
        },
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          "url": "https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71"
        },
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563"
        }
      ],
      "title": "xfrm: validate new SA\u0027s prefixlen using SA family when sel.family is unset",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50142",
    "datePublished": "2024-11-07T09:31:19.415Z",
    "dateReserved": "2024-10-21T19:36:19.956Z",
    "dateUpdated": "2024-12-19T09:34:02.678Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50142\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-07T10:15:06.170\",\"lastModified\":\"2024-11-22T16:47:08.477\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nxfrm: validate new SA\u0027s prefixlen using SA family when sel.family is unset\\n\\nThis expands the validation introduced in commit 07bf7908950a (\\\"xfrm:\\nValidate address prefix lengths in the xfrm selector.\\\")\\n\\nsyzbot created an SA with\\n    usersa.sel.family = AF_UNSPEC\\n    usersa.sel.prefixlen_s = 128\\n    usersa.family = AF_INET\\n\\nBecause of the AF_UNSPEC selector, verify_newsa_info doesn\u0027t put\\nlimits on prefixlen_{s,d}. But then copy_from_user_state sets\\nx-\u003esel.family to usersa.family (AF_INET). Do the same conversion in\\nverify_newsa_info before validating prefixlen_{s,d}, since that\u0027s how\\nprefixlen is going to be used later on.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfrm: validar el prefijo de la nueva SA usando la familia de SA cuando sel.family no est\u00e1 configurado Esto expande la validaci\u00f3n introducida en el commit 07bf7908950a (\\\"xfrm: validar las longitudes de prefijo de direcci\u00f3n en el selector xfrm\\\"). syzbot cre\u00f3 una SA con usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Debido al selector AF_UNSPEC, verificar_newsa_info no pone l\u00edmites en prefixlen_{s,d}. Pero luego copy_from_user_state establece x-\u0026gt;sel.family en usersa.family (AF_INET). Realice la misma conversi\u00f3n en verificar_newsa_info antes de validar prefixlen_{s,d}, ya que as\u00ed es como se usar\u00e1 prefixlen m\u00e1s adelante.\"}],\"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:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.12\",\"versionEndExcluding\":\"4.19.323\",\"matchCriteriaId\":\"412BD203-5581-4B41-81A3-77F90DAD48A1\"},{\"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\":\"5.10.229\",\"matchCriteriaId\":\"1A03CABE-9B43-4E7F-951F-10DEEADAA426\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.170\",\"matchCriteriaId\":\"A9BA1C73-2D2E-45E3-937B-276A28AEB5FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.115\",\"matchCriteriaId\":\"C08A77A6-E42E-4EFD-B5A1-2BF6CBBB42AE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.59\",\"matchCriteriaId\":\"5D15CA59-D15C-4ACD-8B03-A072DEAD2081\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.6\",\"matchCriteriaId\":\"E4486B12-007B-4794-9857-F07145637AA1\"},{\"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\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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