CVE-2025-38405 (GCVE-0-2025-38405)
Vulnerability from cvelistv5
Published
2025-07-25 13:12
Modified
2025-07-28 04:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak of bio integrity If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-128 slab or more precisely bio->bi_integrity. Since commit bf4c89fc8797 ("block: don't call bio_uninit from bio_endio") each user of bio_init has to use bio_uninit as well. Otherwise the bio integrity is not getting free. Nvmet uses bio_init for inline bios. Uninit the inline bio to complete deallocation of integrity in bio.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df
Impacted products
Vendor Product Version
Linux Linux Version: bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f
Version: bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f
Version: bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f
Version: 64149da0fddbbfe43e11c0348d8c8b4171dae3a2
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   Linux Linux Version: 6.11
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/nvmet.h"
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              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix memory leak of bio integrity\n\nIf nvmet receives commands with metadata there is a continuous memory\nleak of kmalloc-128 slab or more precisely bio-\u003ebi_integrity.\n\nSince commit bf4c89fc8797 (\"block: don\u0027t call bio_uninit from bio_endio\")\neach user of bio_init has to use bio_uninit as well. Otherwise the bio\nintegrity is not getting free. Nvmet uses bio_init for inline bios.\n\nUninit the inline bio to complete deallocation of integrity in bio."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:21:15.215Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038"
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      ],
      "title": "nvmet: fix memory leak of bio integrity",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38405",
    "datePublished": "2025-07-25T13:12:07.926Z",
    "dateReserved": "2025-04-16T04:51:24.012Z",
    "dateUpdated": "2025-07-28T04:21:15.215Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38405\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T14:15:32.077\",\"lastModified\":\"2025-07-25T15:29:19.837\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvmet: fix memory leak of bio integrity\\n\\nIf nvmet receives commands with metadata there is a continuous memory\\nleak of kmalloc-128 slab or more precisely bio-\u003ebi_integrity.\\n\\nSince commit bf4c89fc8797 (\\\"block: don\u0027t call bio_uninit from bio_endio\\\")\\neach user of bio_init has to use bio_uninit as well. Otherwise the bio\\nintegrity is not getting free. Nvmet uses bio_init for inline bios.\\n\\nUninit the inline bio to complete deallocation of integrity in bio.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvmet: se corrige una fuga de memoria de la integridad de la bio. Si nvmet recibe comandos con metadatos, se produce una fuga de memoria continua de la slab kmalloc-128 o, m\u00e1s precisamente, bio-\u0026gt;bi_integrity. Desde el commit bf4c89fc8797 (\\\"bloqueo: no llamar a bio_uninit desde bio_endio\\\"), cada usuario de bio_init debe usar tambi\u00e9n bio_uninit. De lo contrario, la integridad de la bio no se libera. nvmet usa bio_init para la bios en l\u00ednea. Desinicie la bios en l\u00ednea para completar la desasignaci\u00f3n de la integridad en la bio.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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