← Back to CVE Explorer

CVE-2025-37844

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: cifs: avoid NULL pointer dereference in dbg call cifs_server_dbg() implies server to be non-NULL so move call under condition to avoid NULL pointer dereference. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-09 07:16:05.190000
Last modified
2026-11-05 21:17:55.390000
View original CVE JSON
{
  "id": "CVE-2025-37844",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-05-09T07:16:05.190",
  "lastModified": "2026-11-05T21:17:55.390",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: avoid NULL pointer dereference in dbg call\n\ncifs_server_dbg() implies server to be non-NULL so\nmove call under condition to avoid NULL pointer dereference.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: evitar la desreferencia de puntero nulo en la llamada a dbg. cifs_server_dbg() implica que el servidor no es nulo, por lo que se mueve la llamada bajo condición para evitar la desreferencia de puntero nulo. Encontrada por el Centro de Verificación de Linux (linuxtesting.org) con SVACE."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/smb/client/smb2misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "ba3ce6c60cd5db258687dfeba9fc608f5e7cadf3",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "9c9000cb91b986eb7f75835340c67857ab97c09b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "b2a1833e1c63e2585867ebeaf4dd41494dcede4b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "864ba5c651b03830f36f0906c21af05b15c1aaa6",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "e0717385f5c51e290c2cd2ad4699a778316b5132",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "20048e658652e731f5cadf4a695925e570ca0ff9",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "6c14ee6af8f1f188b668afd6d003f7516a507b08",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e79b0332ae06b4895dcecddf4bbc5d3917e9383c",
              "lessThan": "b4885bd5935bb26f0a414ad55679a372e53f9b9b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "53e83828d352304fec5e19751f38ed8c65e6ec2f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5.6.7",
              "lessThan": "5.7",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/smb/client/smb2misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.7",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.7",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.10.237",
              "lessThanOrEqual": "5.10.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.181",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.135",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.88",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.24",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.13.12",
              "lessThanOrEqual": "6.13.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.14.3",
              "lessThanOrEqual": "6.14.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.15",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-05T20:42:16.112177Z",
          "id": "CVE-2025-37844",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.6.7",
              "versionEndExcluding": "5.10.237",
              "matchCriteriaId": "DE8918E9-DA45-4659-A947-68CAA6785A78"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.11",
              "versionEndExcluding": "5.15.181",
              "matchCriteriaId": "12331C9E-F601-4EFC-899E-369F98DCC70B"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.16",
              "versionEndExcluding": "6.1.135",
              "matchCriteriaId": "5B9ACE29-7445-4B6F-B761-6367C005E275"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.2",
              "versionEndExcluding": "6.6.88",
              "matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.7",
              "versionEndExcluding": "6.12.24",
              "matchCriteriaId": "1D35A8A8-F3EC-45E6-AD37-1F154B27529D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.13",
              "versionEndExcluding": "6.13.12",
              "matchCriteriaId": "4A475784-BF3B-4514-81EE-49C8522FB24A"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.14",
              "versionEndExcluding": "6.14.3",
              "matchCriteriaId": "483E2E15-2135-4EC6-AB64-16282C5EF704"
            }
          ]
        }
      ]
    },
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/20048e658652e731f5cadf4a695925e570ca0ff9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/6c14ee6af8f1f188b668afd6d003f7516a507b08",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/864ba5c651b03830f36f0906c21af05b15c1aaa6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9c9000cb91b986eb7f75835340c67857ab97c09b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/b2a1833e1c63e2585867ebeaf4dd41494dcede4b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/b4885bd5935bb26f0a414ad55679a372e53f9b9b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/ba3ce6c60cd5db258687dfeba9fc608f5e7cadf3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/e0717385f5c51e290c2cd2ad4699a778316b5132",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List"
      ]
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List"
      ]
    }
  ]
}