FKIE_CVE-2026-40340

Vulnerability from fkie_nvd - Published: 2026-04-18 00:16 - Updated: 2026-06-17 10:45
Severity
6.1 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read vulnerability in `ptp_unpack_OI()` in `camlibs/ptp2/ptp-pack.c` (lines 530–563). The function validates `len < PTP_oi_SequenceNumber` (i.e., len < 48) but subsequently accesses offsets 48–56, up to 9 bytes beyond the validated boundary, via the Samsung Galaxy 64-bit objectsize detection heuristic. Commit 7c7f515bc88c3d0c4098ac965d313518e0ccbe33 fixes the issue.
References
security-advisories@github.comhttps://github.com/gphoto/libgphoto2/commit/7c7f515bc88c3d0c4098ac965d313518e0ccbe33
security-advisories@github.comhttps://github.com/gphoto/libgphoto2/security/advisories/GHSA-xfw3-xvjp-5wcv
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libgphoto2",
          "vendor": "gphoto",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 2.5.33"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read vulnerability in `ptp_unpack_OI()` in `camlibs/ptp2/ptp-pack.c` (lines 530\u2013563). The function validates `len \u003c PTP_oi_SequenceNumber` (i.e., len \u003c 48) but subsequently accesses offsets 48\u201356, up to 9 bytes beyond the validated boundary, via the Samsung Galaxy 64-bit objectsize detection heuristic. Commit 7c7f515bc88c3d0c4098ac965d313518e0ccbe33 fixes the issue."
    }
  ],
  "id": "CVE-2026-40340",
  "lastModified": "2026-06-17T10:45:08.840",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-40340",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-20T13:29:33.955929Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-18T00:16:38.087",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/gphoto/libgphoto2/commit/7c7f515bc88c3d0c4098ac965d313518e0ccbe33"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/gphoto/libgphoto2/security/advisories/GHSA-xfw3-xvjp-5wcv"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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