CVE-2025-38243 (GCVE-0-2025-38243)
Vulnerability from cvelistv5
Published
2025-07-09 10:42
Modified
2025-07-28 04:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid inode pointer dereferences during log replay In a few places where we call read_one_inode(), if we get a NULL pointer we end up jumping into an error path, or fallthrough in case of __add_inode_ref(), where we then do something like this: iput(&inode->vfs_inode); which results in an invalid inode pointer that triggers an invalid memory access, resulting in a crash. Fix this by making sure we don't do such dereferences.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0502d1127436a69b8c2e7cf309ae0ebff3332668
Version: b4c50cbb01a1b6901d2b94469636dd80fa93de81
Version: b4c50cbb01a1b6901d2b94469636dd80fa93de81
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/tree-log.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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              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "6.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.5",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix invalid inode pointer dereferences during log replay\n\nIn a few places where we call read_one_inode(), if we get a NULL pointer\nwe end up jumping into an error path, or fallthrough in case of\n__add_inode_ref(), where we then do something like this:\n\n   iput(\u0026inode-\u003evfs_inode);\n\nwhich results in an invalid inode pointer that triggers an invalid memory\naccess, resulting in a crash.\n\nFix this by making sure we don\u0027t do such dereferences."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:16:01.184Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760"
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      ],
      "title": "btrfs: fix invalid inode pointer dereferences during log replay",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38243",
    "datePublished": "2025-07-09T10:42:26.014Z",
    "dateReserved": "2025-04-16T04:51:23.996Z",
    "dateUpdated": "2025-07-28T04:16:01.184Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38243\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-09T11:15:26.350\",\"lastModified\":\"2025-07-10T15:15:27.077\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: fix invalid inode pointer dereferences during log replay\\n\\nIn a few places where we call read_one_inode(), if we get a NULL pointer\\nwe end up jumping into an error path, or fallthrough in case of\\n__add_inode_ref(), where we then do something like this:\\n\\n   iput(\u0026inode-\u003evfs_inode);\\n\\nwhich results in an invalid inode pointer that triggers an invalid memory\\naccess, resulting in a crash.\\n\\nFix this by making sure we don\u0027t do such dereferences.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: correcci\u00f3n de desreferencias de punteros inodos no v\u00e1lidos durante la reproducci\u00f3n de registros. En algunos casos, al ejecutar read_one_inode(), si se obtiene un puntero nulo, se accede a una ruta de error o a una ruta de paso en el caso de __add_inode_ref(). En este caso, se realiza algo como: iput(\u0026amp;inode-\u0026gt;vfs_inode);, lo que genera un puntero inodo no v\u00e1lido que desencadena un acceso no v\u00e1lido a memoria y provoca un fallo. Para solucionar esto, es necesario asegurarse de no realizar dichas desreferencias.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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