CVE-2024-56774
Vulnerability from cvelistv5
Published
2025-01-08 17:49
Modified
2025-01-08 17:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: add a sanity check for btrfs root in btrfs_search_slot() Syzbot reports a null-ptr-deref in btrfs_search_slot(). The reproducer is using rescue=ibadroots, and the extent tree root is corrupted thus the extent tree is NULL. When scrub tries to search the extent tree to gather the needed extent info, btrfs_search_slot() doesn't check if the target root is NULL or not, resulting the null-ptr-deref. Add sanity check for btrfs root before using it in btrfs_search_slot().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6
Impacted products
Vendor Product Version
Linux Linux Version: 5.11
Show details on NVD website

To clipboard 

{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/ctree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.11"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: add a sanity check for btrfs root in btrfs_search_slot()\n\nSyzbot reports a null-ptr-deref in btrfs_search_slot().\n\nThe reproducer is using rescue=ibadroots, and the extent tree root is\ncorrupted thus the extent tree is NULL.\n\nWhen scrub tries to search the extent tree to gather the needed extent\ninfo, btrfs_search_slot() doesn\u0027t check if the target root is NULL or\nnot, resulting the null-ptr-deref.\n\nAdd sanity check for btrfs root before using it in btrfs_search_slot()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-08T17:49:13.121Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b"
        },
        {
          "url": "https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab"
        },
        {
          "url": "https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4"
        }
      ],
      "title": "btrfs: add a sanity check for btrfs root in btrfs_search_slot()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56774",
    "datePublished": "2025-01-08T17:49:13.121Z",
    "dateReserved": "2024-12-29T11:26:39.766Z",
    "dateUpdated": "2025-01-08T17:49:13.121Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56774\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-08T18:15:18.213\",\"lastModified\":\"2025-01-08T18:15:18.213\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: add a sanity check for btrfs root in btrfs_search_slot()\\n\\nSyzbot reports a null-ptr-deref in btrfs_search_slot().\\n\\nThe reproducer is using rescue=ibadroots, and the extent tree root is\\ncorrupted thus the extent tree is NULL.\\n\\nWhen scrub tries to search the extent tree to gather the needed extent\\ninfo, btrfs_search_slot() doesn\u0027t check if the target root is NULL or\\nnot, resulting the null-ptr-deref.\\n\\nAdd sanity check for btrfs root before using it in btrfs_search_slot().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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