Vulnerability-Lookup

FKIE_CVE-2025-39795

Vulnerability from fkie_nvd - Published: 2025-09-12 16:15 - Updated: 2026-01-16 20:00

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: block: avoid possible overflow for chunk_sectors check in blk_stack_limits() In blk_stack_limits(), we check that the t->chunk_sectors value is a multiple of the t->physical_block_size value. However, by finding the chunk_sectors value in bytes, we may overflow the unsigned int which holds chunk_sectors, so change the check to be based on sectors.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	Third Party Advisory

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
debian	debian_linux	11.0

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "308E1A35-3600-4D48-A9E3-D9446213F7C6",
              "versionEndExcluding": "5.10.241",
              "versionStartIncluding": "5.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AD9E597F-3DDE-4D7E-976C-463D0611F13F",
              "versionEndExcluding": "5.15.190",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FDBE8280-8983-4D2D-943D-2E6D0104E2D8",
              "versionEndExcluding": "6.1.149",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F2293654-7169-49B5-8D0D-EE51EF8B8E48",
              "versionEndExcluding": "6.6.103",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "472C5F87-2BF3-4FAB-9B21-DA7513977363",
              "versionEndExcluding": "6.12.43",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BC242347-F722-43AE-B910-BE0B22386977",
              "versionEndExcluding": "6.15.11",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899",
              "versionEndExcluding": "6.16.2",
              "versionStartIncluding": "6.16",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: avoid possible overflow for chunk_sectors check in blk_stack_limits()\n\nIn blk_stack_limits(), we check that the t-\u003echunk_sectors value is a\nmultiple of the t-\u003ephysical_block_size value.\n\nHowever, by finding the chunk_sectors value in bytes, we may overflow\nthe unsigned int which holds chunk_sectors, so change the check to be\nbased on sectors."
    }
  ],
  "id": "CVE-2025-39795",
  "lastModified": "2026-01-16T20:00:17.163",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-09-12T16:15:33.850",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-39795 (GCVE-0-2025-39795)

Vulnerability from cvelistv5 – Published: 2025-09-12 15:59 – Updated: 2026-01-02 15:32

Title

block: avoid possible overflow for chunk_sectors check in blk_stack_limits()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/418751910044649ba…
	https://git.kernel.org/stable/c/8b3ce085b52e67429…
	https://git.kernel.org/stable/c/31f2f080898e50cbf…
	https://git.kernel.org/stable/c/3b9d69f0e68aa6b0a…
	https://git.kernel.org/stable/c/46aa80ef49594ed7d…
	https://git.kernel.org/stable/c/5e276e6ff9aacf890…
	https://git.kernel.org/stable/c/14beeef4aafecc8a4…
	https://git.kernel.org/stable/c/448dfecc7ff807822…

Impacted products

Vendor

Product

Version

Linux

Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 418751910044649baa2b424ea31cce3fc4dcc253 (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 8b3ce085b52e674290cbfdd07034e7653ffbe4dc (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 31f2f080898e50cbf2bae62d35f9f2a997547b38 (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 3b9d69f0e68aa6b0acd9791c45d445154a8c66e9 (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 46aa80ef49594ed7de685ecbc673b291e9a2c159 (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2 (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 14beeef4aafecc8a41de534e31fb5be94739392f (git)
Affected: 22ada802ede89829dd010a317d9b812b7df7111a , < 448dfecc7ff807822ecd47a5c052acedca7d09e8 (git)

Linux

Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.241 , ≤ 5.10.* (semver)
Unaffected: 5.15.190 , ≤ 5.15.* (semver)
Unaffected: 6.1.149 , ≤ 6.1.* (semver)
Unaffected: 6.6.103 , ≤ 6.6.* (semver)
Unaffected: 6.12.43 , ≤ 6.12.* (semver)
Unaffected: 6.15.11 , ≤ 6.15.* (semver)
Unaffected: 6.16.2 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T17:43:27.990Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/blk-settings.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "418751910044649baa2b424ea31cce3fc4dcc253",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "8b3ce085b52e674290cbfdd07034e7653ffbe4dc",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "31f2f080898e50cbf2bae62d35f9f2a997547b38",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "3b9d69f0e68aa6b0acd9791c45d445154a8c66e9",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "46aa80ef49594ed7de685ecbc673b291e9a2c159",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "14beeef4aafecc8a41de534e31fb5be94739392f",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            },
            {
              "lessThan": "448dfecc7ff807822ecd47a5c052acedca7d09e8",
              "status": "affected",
              "version": "22ada802ede89829dd010a317d9b812b7df7111a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/blk-settings.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.241",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.190",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.149",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.43",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.241",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.190",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.149",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.103",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.43",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.11",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.2",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: avoid possible overflow for chunk_sectors check in blk_stack_limits()\n\nIn blk_stack_limits(), we check that the t-\u003echunk_sectors value is a\nmultiple of the t-\u003ephysical_block_size value.\n\nHowever, by finding the chunk_sectors value in bytes, we may overflow\nthe unsigned int which holds chunk_sectors, so change the check to be\nbased on sectors."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-02T15:32:23.368Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38"
        },
        {
          "url": "https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9"
        },
        {
          "url": "https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2"
        },
        {
          "url": "https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f"
        },
        {
          "url": "https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8"
        }
      ],
      "title": "block: avoid possible overflow for chunk_sectors check in blk_stack_limits()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39795",
    "datePublished": "2025-09-12T15:59:32.037Z",
    "dateReserved": "2025-04-16T07:20:57.132Z",
    "dateUpdated": "2026-01-02T15:32:23.368Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2025-39795

CVE-2025-39795 (GCVE-0-2025-39795)

Tags

Sightings

Nomenclature