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libgphoto2 — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-40336

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have a memory leak in `ptp_unpack_Sony_DPD()` in `camlibs/ptp2/ptp-pack.c` (lines 884–885). When processing a secondary enumeration list (introduced in 2024+ Sony cameras), the function overwrites dpd->FORM.Enum.SupportedValue with a new calloc() without freeing the previous allocation from line 857. The original array and any string values it contains are leaked on every property descriptor parse. Commit 404ff02c75f3cb280196fc260a63c4d26cf1a8f6 fixes the issue.

Products
libgphoto2
Affected versions
2.5.30-1, 2.5.31-1, 2.5.31-2, 2.5.31-2.1, 2.5.31-2.1~exp1, 2.5.31-3, 2.5.31-4, 2.5.32-1, 2.5.33-1, 2.5.34-1, 2.5.34-2
Fixed versions
2.5.34-1
CVEs
CVE-2026-40336
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 17:41 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-40336

core-osv · Original source

Published 18 Apr 2026, 00:16 UTC

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have a memory leak in `ptp_unpack_Sony_DPD()` in `camlibs/ptp2/ptp-pack.c` (lines 884–885). When processing a secondary enumeration list (introduced in 2024+ Sony cameras), the function overwrites dpd->FORM.Enum.SupportedValue with a new calloc() without freeing the previous allocation from line 857. The original array and any string values it contains are leaked on every property descriptor parse. Commit 404ff02c75f3cb280196fc260a63c4d26cf1a8f6 fixes the issue.

osv:DEBIAN-CVE-2026-40336

libgphoto2

Fixed versions: Not specified

libgphoto2

Fixed versions: Not specified

libgphoto2

Fixed versions: 2.5.34-1

Complete source record
{
  "id": "bea10706b4a22b556c5bc8c2d668c24508757c0272a00c1eed339ea9a624521b",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40336",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-40336",
    "summary": "libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have a memory leak in `ptp_unpack_Sony_DPD()` in `camlibs/ptp2/ptp-pack.c` (lines 884–885). When processing a secondary enumeration list (introduced in 2024+ Sony cameras), the function overwrites dpd->FORM.Enum.SupportedValue with a new calloc() without freeing the previous allocation from line 857. The original array and any string values it contains are leaked on every property descriptor parse. Commit 404ff02c75f3cb280196fc260a63c4d26cf1a8f6 fixes the issue.",
    "evidence": "osv:DEBIAN-CVE-2026-40336",
    "products": [
      {
        "name": {
          "value": "libgphoto2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.5.30-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.31-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.31-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.31-2.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.31-2.1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.31-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.31-4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.32-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.33-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.34-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5.34-2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libgphoto2",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.5.31-4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.5.32-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.5.33-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.5.34-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.5.34-2",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libgphoto2",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.5.34-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.5.31-4",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.5.32-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.5.33-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "low",
    "structured": {
      "id": "DEBIAN-CVE-2026-40336",
      "aliases": [
        "DEBIAN-CVE-2026-40336"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libgphoto2",
            "purl": "pkg:deb/debian/libgphoto2?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "2.5.30-1",
            "2.5.31-1",
            "2.5.31-2",
            "2.5.31-2.1",
            "2.5.31-2.1~exp1",
            "2.5.31-3",
            "2.5.31-4",
            "2.5.32-1",
            "2.5.33-1",
            "2.5.34-1",
            "2.5.34-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40336.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libgphoto2",
            "purl": "pkg:deb/debian/libgphoto2?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "2.5.31-4",
            "2.5.32-1",
            "2.5.33-1",
            "2.5.34-1",
            "2.5.34-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40336.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.5.34-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libgphoto2",
            "purl": "pkg:deb/debian/libgphoto2?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2.5.31-4",
            "2.5.32-1",
            "2.5.33-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40336.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:33.461417272Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-40336"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-40336"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-40336",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 460987,
  "published_at": "2026-04-18T00:16:37.523+00:00"
}