CVE-2026-40334

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Source
https://cve.org/CVERecord?id=CVE-2026-40334
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40334.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40334
Aliases
  • GHSA-ph87-cc3j-c6hm
Downstream
Related
Published
2026-04-17T23:16:38.751Z
Modified
2026-07-22T00:24:30.490660Z
Severity
  • 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c
Details

libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null terminator exists in ptpunpackCanon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. Commit 259fc7d3bfe534ce4b114c464f55b448670ab873 patches the issue.

Database specific 
{
    "cwe_ids": [
        "CWE-170"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40334.json",
    "cna_assigner": "GitHub_M"
}
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
259fc7d3bfe534ce4b114c464f55b448670ab873
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.5.33"
        }
    ]
}

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

vanir_signatures_modified 
"2026-07-22T00:24:30Z"
vanir_signatures 
[
    {
        "signature_type": "Function",
        "target": {
            "file": "camlibs/ptp2/ptp-pack.c",
            "function": "ptp_unpack_Canon_FE"
        },
        "deprecated": false,
        "source": "https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873",
        "id": "CVE-2026-40334-653b1fce",
        "signature_version": "v1",
        "digest": {
            "function_hash": "332789816117250806772017235864637529635",
            "length": 553.0
        }
    },
    {
        "signature_type": "Line",
        "target": {
            "file": "camlibs/ptp2/ptp-pack.c"
        },
        "deprecated": false,
        "source": "https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873",
        "id": "CVE-2026-40334-e2c1dc06",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "264833626875413133082486546480536312426",
                "66162376617624956083055343090675811804",
                "216127511021842429427332640001788391942",
                "191076344472402919272878336536017125386"
            ],
            "threshold": 0.9
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40334.json"