cve-2024-57927
Vulnerability from cvelistv5
Published
2025-01-19 11:52
Modified
2025-01-20 06:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nfs: Fix oops in nfs_netfs_init_request() when copying to cache When netfslib wants to copy some data that has just been read on behalf of nfs, it creates a new write request and calls nfs_netfs_init_request() to initialise it, but with a NULL file pointer. This causes nfs_file_open_context() to oops - however, we don't actually need the nfs context as we're only going to write to the cache. Fix this by just returning if we aren't given a file pointer and emit a warning if the request was for something other than copy-to-cache. Further, fix nfs_netfs_free_request() so that it doesn't try to free the context if the pointer is NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13a07cc81e2d116cece727a83746c74b87a9d417Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/86ad1a58f6a9453f49e06ef957a40a8dac00a13fPatch
Impacted products
Vendor Product Version
Linux Linux Version: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e
Version: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e
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   Linux Linux Version: 6.12
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/fscache.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "6.12"
            },
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              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Fix oops in nfs_netfs_init_request() when copying to cache\n\nWhen netfslib wants to copy some data that has just been read on behalf of\nnfs, it creates a new write request and calls nfs_netfs_init_request() to\ninitialise it, but with a NULL file pointer.  This causes\nnfs_file_open_context() to oops - however, we don\u0027t actually need the nfs\ncontext as we\u0027re only going to write to the cache.\n\nFix this by just returning if we aren\u0027t given a file pointer and emit a\nwarning if the request was for something other than copy-to-cache.\n\nFurther, fix nfs_netfs_free_request() so that it doesn\u0027t try to free the\ncontext if the pointer is NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-20T06:29:42.662Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/13a07cc81e2d116cece727a83746c74b87a9d417"
        },
        {
          "url": "https://git.kernel.org/stable/c/86ad1a58f6a9453f49e06ef957a40a8dac00a13f"
        }
      ],
      "title": "nfs: Fix oops in nfs_netfs_init_request() when copying to cache",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57927",
    "datePublished": "2025-01-19T11:52:44.567Z",
    "dateReserved": "2025-01-19T11:50:08.376Z",
    "dateUpdated": "2025-01-20T06:29:42.662Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-57927\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-19T12:15:26.810\",\"lastModified\":\"2025-01-31T15:29:09.497\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfs: Fix oops in nfs_netfs_init_request() when copying to cache\\n\\nWhen netfslib wants to copy some data that has just been read on behalf of\\nnfs, it creates a new write request and calls nfs_netfs_init_request() to\\ninitialise it, but with a NULL file pointer.  This causes\\nnfs_file_open_context() to oops - however, we don\u0027t actually need the nfs\\ncontext as we\u0027re only going to write to the cache.\\n\\nFix this by just returning if we aren\u0027t given a file pointer and emit a\\nwarning if the request was for something other than copy-to-cache.\\n\\nFurther, fix nfs_netfs_free_request() so that it doesn\u0027t try to free the\\ncontext if the pointer is NULL.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfs: Arreglar oops en nfs_netfs_init_request() al copiar a cach\u00e9 Cuando netfslib quiere copiar algunos datos que acaban de leerse en nombre de nfs, crea una nueva solicitud de escritura y llama a nfs_netfs_init_request() para inicializarla, pero con un puntero de archivo NULL. Esto hace que nfs_file_open_context() d\u00e9 un error; sin embargo, en realidad no necesitamos el contexto nfs ya que solo vamos a escribir en la cach\u00e9. Arregla esto simplemente devolviendo si no se nos da un puntero de archivo y emitiendo una advertencia si la solicitud fue para algo distinto a copiar a cach\u00e9. Adem\u00e1s, arregla nfs_netfs_free_request() para que no intente liberar el contexto si el puntero es NULL.\"}],\"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\":\"6.12\",\"versionEndExcluding\":\"6.12.10\",\"matchCriteriaId\":\"CAA666EC-CF76-46C6-AE86-951E128D4C0A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE491969-75AE-4A6B-9A58-8FC5AF98798F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"93C0660D-7FB8-4FBA-892A-B064BA71E49E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"034C36A6-C481-41F3-AE9A-D116E5BE6895\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/13a07cc81e2d116cece727a83746c74b87a9d417\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/86ad1a58f6a9453f49e06ef957a40a8dac00a13f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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