FKIE_CVE-2026-45972

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-06-17 10:52
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4edaPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.19
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2file.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74",
              "status": "affected",
              "version": "743f70406264348c0830f38409eb6c40a42fb2db",
              "versionType": "git"
            },
            {
              "lessThan": "7425453ea16dbc3bbb0f6cac4d60b537e5e4d151",
              "status": "affected",
              "version": "3a6d6b332f92990958602c1e35ce0173e2dd62e9",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "b64e3b5d8d759dd4333992e4ba4dadf9359952c8",
              "versionType": "git"
            },
            {
              "lessThan": "e66dcf7bb9c4df5582c82bc3582725abcbfbea73",
              "status": "affected",
              "version": "9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e3a43633023e3cacaca60d4b8972d084a2b06236",
              "versionType": "git"
            },
            {
              "lessThan": "ebbbc4bfad4cb355d17c671223d0814ee3ef4eda",
              "status": "affected",
              "version": "e3a43633023e3cacaca60d4b8972d084a2b06236",
              "versionType": "git"
            },
            {
              "lessThan": "6.1.165",
              "status": "affected",
              "version": "6.1.163",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.128",
              "status": "affected",
              "version": "6.6.124",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.75",
              "status": "affected",
              "version": "6.12.70",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.14",
              "status": "affected",
              "version": "6.18.10",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2file.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "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": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F2E6F672-99A5-4539-9312-ED9E5727E1C1",
              "versionEndExcluding": "6.1.165",
              "versionStartIncluding": "6.1.163",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5A13D8A0-4650-4291-B232-D6A29EB529EA",
              "versionEndExcluding": "6.6.128",
              "versionStartIncluding": "6.6.124",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8A635070-FE03-4A8C-B47E-AD467AF0ECB5",
              "versionEndExcluding": "6.12.75",
              "versionStartIncluding": "6.12.70",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "35A89BC7-E31E-4DDF-A921-3EDD7EB77120",
              "versionEndExcluding": "6.18.14",
              "versionStartIncluding": "6.18.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "411B9362-5B74-4569-8450-50CAD50DE99C",
              "versionEndExcluding": "6.19.4",
              "versionStartIncluding": "6.19.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*",
              "matchCriteriaId": "35C8A871-4971-433E-A046-FC9F7B7D190A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF and double free in smb2_open_file()\n\nZero out @err_iov and @err_buftype before retrying SMB2_open() to\nprevent an UAF bug if @data != NULL, otherwise a double free."
    }
  ],
  "id": "CVE-2026-45972",
  "lastModified": "2026-06-17T10:52:49.483",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-27T14:17:14.173",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4eda"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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