CVE-2026-40338

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Source
https://cve.org/CVERecord?id=CVE-2026-40338
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40338.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40338
Aliases
  • GHSA-2hwp-w84q-27hf
Downstream
Related
Published
2026-04-17T23:40:10Z
Modified
2026-08-12T16:25:08Z
Severity
  • 5.2 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L CVSS Calculator
Summary
libgphoto2 has OOB read in ptp_unpack_Sony_DPD() enumeration count parsing in ptp-pack.c
Details

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read in the PTP_DPFF_Enumeration case of ptp_unpack_Sony_DPD() in camlibs/ptp2/ptp-pack.c (line 856). The function reads a 2-byte enumeration count N via dtoh16o(data, *poffset) without verifying that 2 bytes remain in the buffer. The standard ptp_unpack_DPD() at line 704 has this exact check, confirming the Sony variant omitted it by oversight. Commit 3b9f9696be76ae51dca983d9dd8ce586a2561845 fixes the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40338.json"
}
References

Affected packages

Git / github.com/gphoto/libgphoto2

Affected ranges

Type
GIT
Repo
https://github.com/gphoto/libgphoto2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3b9f9696be76ae51dca983d9dd8ce586a2561845
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.5.33"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

Other
libgphoto2-2_5_0-release
libgphoto2-2_5_1-release
libgphoto2-2_5_10-release
libgphoto2-2_5_11-release
libgphoto2-2_5_12-release
libgphoto2-2_5_13-release
libgphoto2-2_5_14-release
libgphoto2-2_5_15-release
libgphoto2-2_5_16-release
libgphoto2-2_5_17-release
libgphoto2-2_5_18-release
libgphoto2-2_5_19-release
libgphoto2-2_5_1_1-release
libgphoto2-2_5_2-release
libgphoto2-2_5_20-release
libgphoto2-2_5_21-release
libgphoto2-2_5_22-release
libgphoto2-2_5_23-release
libgphoto2-2_5_24-release
libgphoto2-2_5_25-release
libgphoto2-2_5_26-release
libgphoto2-2_5_27-release
libgphoto2-2_5_28-release
libgphoto2-2_5_29-release
libgphoto2-2_5_3-release
libgphoto2-2_5_30-release
libgphoto2-2_5_31-release
libgphoto2-2_5_32-release
libgphoto2-2_5_3_1-release
libgphoto2-2_5_4-release
libgphoto2-2_5_5-release
libgphoto2-2_5_5_1-release
libgphoto2-2_5_6-release
libgphoto2-2_5_7-release
libgphoto2-2_5_8-release
libgphoto2-2_5_9-release
v2.*
v2.5.24
v2.5.25
v2.5.26
v2.5.27
v2.5.28
v2.5.29
v2.5.30
v2.5.31
v2.5.32

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40338.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "21965023955985201892548801764292135121",
            "length": 4187
        },
        "id": "CVE-2026-40338-595dd851",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/gphoto/libgphoto2/commit/3b9f9696be76ae51dca983d9dd8ce586a2561845",
        "target": {
            "file": "camlibs/ptp2/ptp-pack.c",
            "function": "ptp_unpack_Sony_DPD"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "236872050466299106511125346444051247505",
                "176932953261585094079536782933750801386",
                "126427036254075555145455405924006108582"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-40338-fa21efd2",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/gphoto/libgphoto2/commit/3b9f9696be76ae51dca983d9dd8ce586a2561845",
        "target": {
            "file": "camlibs/ptp2/ptp-pack.c"
        }
    }
]
vanir_signatures_modified 
"2026-08-12T16:25:08Z"