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block: fix potential invalid pointer dereference in blk_add_partition

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls.

Announced Source revision 1
Original source ↗

CVE-2024-47705

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-47705

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "cc4d21d9492db4e534d3e01253cf885c90dd2a8b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "80f5bfbb80ea1615290dbc24f49d3d8c86db58fe",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "652039ba477c9a4ab43740cf2cb0d068d53508c2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "afe53ea9b378c376101d99d216f13b6256f75189",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b72053072c0bbe9f1cdfe2ffa3c201c185da2201",
        "lessThan": "26e197b7f9240a4ac301dd0ad520c0c697c2ea7d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "block/partitions/core.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.5"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.227",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.168",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.113",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.54",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.10.13",
        "versionType": "semver",
        "lessThanOrEqual": "6.10.*"
      },
      {
        "status": "unaffected",
        "version": "6.11.2",
        "versionType": "semver",
        "lessThanOrEqual": "6.11.*"
      },
      {
        "status": "unaffected",
        "version": "6.12",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "block/partitions/core.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-47705

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26730 · Revision 1
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Publisher date
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