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CVE-2022-48747 (GCVE-0-2022-48747)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2026-05-23 15:20
VLAI
Title
block: Fix wrong offset in bio_truncate()
Summary
In the Linux kernel, the following vulnerability has been resolved: block: Fix wrong offset in bio_truncate() bio_truncate() clears the buffer outside of last block of bdev, however current bio_truncate() is using the wrong offset of page. So it can return the uninitialized data. This happened when both of truncated/corrupted FS and userspace (via bdev) are trying to read the last of bdev.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-26 14:56 UTC
CWE
  • CWE-908 - Use of Uninitialized Resource
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 943cd69efac437d82a7aea0659fccbcc071730de , < 6cbf4c731d7812518cd857c2cfc3da9fd120f6ae (git)
Affected: 85a8ce62c2eabe28b9d76ca4eecf37922402df93 , < b63e120189fd92aff00096d11e2fc5253f60248b (git)
Affected: 85a8ce62c2eabe28b9d76ca4eecf37922402df93 , < 4633a79ff8bc82770486a063a08b55e5162521d8 (git)
Affected: 85a8ce62c2eabe28b9d76ca4eecf37922402df93 , < 941d5180c430ce5b0f7a3622ef9b76077bfa3d82 (git)
Affected: 85a8ce62c2eabe28b9d76ca4eecf37922402df93 , < 3ee859e384d453d6ac68bfd5971f630d9fa46ad3 (git)
Affected: 5.4.9 , < 5.4.176 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.4.176 , ≤ 5.4.* (semver)
Unaffected: 5.10.96 , ≤ 5.10.* (semver)
Unaffected: 5.15.19 , ≤ 5.15.* (semver)
Unaffected: 5.16.5 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 6cbf4c731d78 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < b63e120189fd (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 4633a79ff8bc (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 941d5180c430 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 3ee859e384d4 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.4.176 , ≤ 5.5 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.10.96 , ≤ 5.11 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.15.19 , ≤ 5.16 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.16.5 , ≤ 5.17 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.17
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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                  "lessThan": "6cbf4c731d7812518cd857c2cfc3da9fd120f6ae",
                  "status": "affected",
                  "version": "943cd69efac437d82a7aea0659fccbcc071730de",
                  "versionType": "git"
                },
                {
                  "lessThan": "b63e120189fd92aff00096d11e2fc5253f60248b",
                  "status": "affected",
                  "version": "85a8ce62c2eabe28b9d76ca4eecf37922402df93",
                  "versionType": "git"
                },
                {
                  "lessThan": "4633a79ff8bc82770486a063a08b55e5162521d8",
                  "status": "affected",
                  "version": "85a8ce62c2eabe28b9d76ca4eecf37922402df93",
                  "versionType": "git"
                },
                {
                  "lessThan": "941d5180c430ce5b0f7a3622ef9b76077bfa3d82",
                  "status": "affected",
                  "version": "85a8ce62c2eabe28b9d76ca4eecf37922402df93",
                  "versionType": "git"
                },
                {
                  "lessThan": "3ee859e384d453d6ac68bfd5971f630d9fa46ad3",
                  "status": "affected",
                  "version": "85a8ce62c2eabe28b9d76ca4eecf37922402df93",
                  "versionType": "git"
                },
                {
                  "lessThan": "5.4.176",
                  "status": "affected",
                  "version": "5.4.9",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "block/bio.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.5"
                },
                {
                  "lessThan": "5.5",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.176",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.96",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.19",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.16.*",
                  "status": "unaffected",
                  "version": "5.16.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.17",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.176",
                      "versionStartIncluding": "5.4.9",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.96",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.19",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.16.5",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.17",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: Fix wrong offset in bio_truncate()\n\nbio_truncate() clears the buffer outside of last block of bdev, however\ncurrent bio_truncate() is using the wrong offset of page. So it can\nreturn the uninitialized data.\n\nThis happened when both of truncated/corrupted FS and userspace (via\nbdev) are trying to read the last of bdev."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-23T15:20:36.508Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/6cbf4c731d7812518cd857c2cfc3da9fd120f6ae"
            },
            {
              "url": "https://git.kernel.org/stable/c/b63e120189fd92aff00096d11e2fc5253f60248b"
            },
            {
              "url": "https://git.kernel.org/stable/c/4633a79ff8bc82770486a063a08b55e5162521d8"
            },
            {
              "url": "https://git.kernel.org/stable/c/941d5180c430ce5b0f7a3622ef9b76077bfa3d82"
            },
            {
              "url": "https://git.kernel.org/stable/c/3ee859e384d453d6ac68bfd5971f630d9fa46ad3"
            }
          ],
          "title": "block: Fix wrong offset in bio_truncate()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-48747",
        "datePublished": "2024-06-20T11:13:29.951Z",
        "dateReserved": "2024-06-20T11:09:39.055Z",
        "dateUpdated": "2026-05-23T15:20:36.508Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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