CVE-2024-57839 (GCVE-0-2024-57839)
Vulnerability from cvelistv5
Published
2025-01-11 14:30
Modified
2025-05-04 10:05
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Revert "readahead: properly shorten readahead when falling back to do_page_cache_ra()" This reverts commit 7c877586da3178974a8a94577b6045a48377ff25. Anders and Philippe have reported that recent kernels occasionally hang when used with NFS in readahead code. The problem has been bisected to 7c877586da3 ("readahead: properly shorten readahead when falling back to do_page_cache_ra()"). The cause of the problem is that ra->size can be shrunk by read_pages() call and subsequently we end up calling do_page_cache_ra() with negative (read huge positive) number of pages. Let's revert 7c877586da3 for now until we can find a proper way how the logic in read_pages() and page_cache_ra_order() can coexist. This can lead to reduced readahead throughput due to readahead window confusion but that's better than outright hangs.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7c877586da3178974a8a94577b6045a48377ff25
Version: 7c877586da3178974a8a94577b6045a48377ff25
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/readahead.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.13",
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                  "vulnerable": true
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"readahead: properly shorten readahead when falling back to do_page_cache_ra()\"\n\nThis reverts commit 7c877586da3178974a8a94577b6045a48377ff25.\n\nAnders and Philippe have reported that recent kernels occasionally hang\nwhen used with NFS in readahead code.  The problem has been bisected to\n7c877586da3 (\"readahead: properly shorten readahead when falling back to\ndo_page_cache_ra()\").  The cause of the problem is that ra-\u003esize can be\nshrunk by read_pages() call and subsequently we end up calling\ndo_page_cache_ra() with negative (read huge positive) number of pages. \nLet\u0027s revert 7c877586da3 for now until we can find a proper way how the\nlogic in read_pages() and page_cache_ra_order() can coexist.  This can\nlead to reduced readahead throughput due to readahead window confusion but\nthat\u0027s better than outright hangs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T10:05:21.323Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/85351e4941a253e4c50fb7048bfc19b60b4ec44b"
        },
        {
          "url": "https://git.kernel.org/stable/c/a220d6b95b1ae12c7626283d7609f0a1438e6437"
        }
      ],
      "title": "Revert \"readahead: properly shorten readahead when falling back to do_page_cache_ra()\"",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57839",
    "datePublished": "2025-01-11T14:30:56.149Z",
    "dateReserved": "2025-01-11T12:34:02.622Z",
    "dateUpdated": "2025-05-04T10:05:21.323Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-57839\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-11T15:15:07.050\",\"lastModified\":\"2025-01-11T15:15:07.050\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRevert \\\"readahead: properly shorten readahead when falling back to do_page_cache_ra()\\\"\\n\\nThis reverts commit 7c877586da3178974a8a94577b6045a48377ff25.\\n\\nAnders and Philippe have reported that recent kernels occasionally hang\\nwhen used with NFS in readahead code.  The problem has been bisected to\\n7c877586da3 (\\\"readahead: properly shorten readahead when falling back to\\ndo_page_cache_ra()\\\").  The cause of the problem is that ra-\u003esize can be\\nshrunk by read_pages() call and subsequently we end up calling\\ndo_page_cache_ra() with negative (read huge positive) number of pages. \\nLet\u0027s revert 7c877586da3 for now until we can find a proper way how the\\nlogic in read_pages() and page_cache_ra_order() can coexist.  This can\\nlead to reduced readahead throughput due to readahead window confusion but\\nthat\u0027s better than outright hangs.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Revertir \\\"readahead: acortar correctamente el readahead al volver a do_page_cache_ra()\\\" Esto revierte el commit 7c877586da3178974a8a94577b6045a48377ff25. Anders y Philippe han informado de que los kernels recientes a veces se bloquean cuando se utilizan con NFS en el c\u00f3digo readahead. El problema se ha dividido en 7c877586da3 (\\\"readahead: acortar correctamente el readahead al volver a do_page_cache_ra()\\\"). La causa del problema es que ra-\u0026gt;size se puede reducir mediante la llamada read_pages() y, posteriormente, terminamos llamando a do_page_cache_ra() con un n\u00famero de p\u00e1ginas negativo (leer positivo enorme). Revertiremos 7c877586da3 por ahora hasta que podamos encontrar una forma adecuada de que la l\u00f3gica en read_pages() y page_cache_ra_order() pueda coexistir. Esto puede provocar una reducci\u00f3n del rendimiento de lectura anticipada debido a la confusi\u00f3n de la ventana de lectura anticipada, pero es mejor que los bloqueos directos.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/85351e4941a253e4c50fb7048bfc19b60b4ec44b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a220d6b95b1ae12c7626283d7609f0a1438e6437\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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