Vulnerability-Lookup

FKIE_CVE-2025-71291

Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-05-13 21:04

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: misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read() In the function bcm_vk_read(), the pointer entry is checked, indicating that it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the following code may cause null-pointer dereferences: struct vk_msg_blk tmp_msg = entry->to_h_msg[0]; set_msg_id(&tmp_msg, entry->usr_msg_id); tmp_msg.size = entry->to_h_blks - 1; To prevent these possible null-pointer dereferences, copy to_h_msg, usr_msg_id, and to_h_blks from iter into temporary variables, and return these temporary variables to the application instead of accessing them through a potentially NULL entry.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3DD2C202-0D8D-4C7D-A980-CFCF610F7707",
              "versionEndExcluding": "6.1.165",
              "versionStartIncluding": "5.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2",
              "versionEndExcluding": "6.6.128",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2",
              "versionEndExcluding": "6.12.75",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B",
              "versionEndExcluding": "6.18.16",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67",
              "versionEndExcluding": "6.19.6",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()\n\nIn the function bcm_vk_read(), the pointer entry is checked, indicating\nthat it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the\nfollowing code may cause null-pointer dereferences:\n\n  struct vk_msg_blk tmp_msg = entry-\u003eto_h_msg[0];\n  set_msg_id(\u0026tmp_msg, entry-\u003eusr_msg_id);\n  tmp_msg.size = entry-\u003eto_h_blks - 1;\n\nTo prevent these possible null-pointer dereferences, copy to_h_msg,\nusr_msg_id, and to_h_blks from iter into temporary variables, and return\nthese temporary variables to the application instead of accessing them\nthrough a potentially NULL entry."
    }
  ],
  "id": "CVE-2025-71291",
  "lastModified": "2026-05-13T21:04:54.180",
  "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": "2026-05-06T12:16:28.330",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-71291 (GCVE-0-2025-71291)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:32 – Updated: 2026-05-11 21:57

Title

misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/741c5a3a0cd893a42…
https://git.kernel.org/stable/c/ece3722169ba93734…
https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4…
https://git.kernel.org/stable/c/3842f93e6e29d5cc1…
https://git.kernel.org/stable/c/20f2d9dbe5e972516…
https://git.kernel.org/stable/c/ba75ecb97d3f4e95d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 , < 741c5a3a0cd893a4218fc0fc8c18403e54fcfb22 (git) Affected: 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 , < ece3722169ba93734bfd1f06255e8ab7f19fe964 (git) Affected: 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 , < aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb (git) Affected: 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 , < 3842f93e6e29d5cc1dcb9e5bda70587b444bed69 (git) Affected: 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 , < 20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd (git) Affected: 88517757a829e9ce146a6c7233ad5dcdc66fcbb0 , < ba75ecb97d3f4e95d59002c13afb6519205be6cb (git)
Linux	Linux	Affected: 5.19 Unaffected: 0 , < 5.19 (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/bcm-vk/bcm_vk_msg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "741c5a3a0cd893a4218fc0fc8c18403e54fcfb22",
              "status": "affected",
              "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0",
              "versionType": "git"
            },
            {
              "lessThan": "ece3722169ba93734bfd1f06255e8ab7f19fe964",
              "status": "affected",
              "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0",
              "versionType": "git"
            },
            {
              "lessThan": "aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb",
              "status": "affected",
              "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0",
              "versionType": "git"
            },
            {
              "lessThan": "3842f93e6e29d5cc1dcb9e5bda70587b444bed69",
              "status": "affected",
              "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0",
              "versionType": "git"
            },
            {
              "lessThan": "20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd",
              "status": "affected",
              "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0",
              "versionType": "git"
            },
            {
              "lessThan": "ba75ecb97d3f4e95d59002c13afb6519205be6cb",
              "status": "affected",
              "version": "88517757a829e9ce146a6c7233ad5dcdc66fcbb0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/bcm-vk/bcm_vk_msg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()\n\nIn the function bcm_vk_read(), the pointer entry is checked, indicating\nthat it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the\nfollowing code may cause null-pointer dereferences:\n\n  struct vk_msg_blk tmp_msg = entry-\u003eto_h_msg[0];\n  set_msg_id(\u0026tmp_msg, entry-\u003eusr_msg_id);\n  tmp_msg.size = entry-\u003eto_h_blks - 1;\n\nTo prevent these possible null-pointer dereferences, copy to_h_msg,\nusr_msg_id, and to_h_blks from iter into temporary variables, and return\nthese temporary variables to the application instead of accessing them\nthrough a potentially NULL entry."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:57:21.624Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22"
        },
        {
          "url": "https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69"
        },
        {
          "url": "https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb"
        }
      ],
      "title": "misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71291",
    "datePublished": "2026-05-06T11:32:23.223Z",
    "dateReserved": "2026-05-06T11:31:45.509Z",
    "dateUpdated": "2026-05-11T21:57:21.624Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2025-71291

CVE-2025-71291 (GCVE-0-2025-71291)

Tags

Sightings

Nomenclature