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
AZL (1)
DEBIAN (1)
OESA (5)
openSUSE (1)
UBUNTU (1)
Related
Published
2026-04-17T23:16:38Z
Modified
2026-10-28T10:49:45Z
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 ptp_unpack_Canon_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 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-170"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40334.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
259fc7d3bfe534ce4b114c464f55b448670ab873
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "last_affected":  "2.5.33"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "259fc7d3bfe534ce4b114c464f55b448670ab873"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

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-2026-40334.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "332789816117250806772017235864637529635",
            "length":  553
        },
        "id":  "CVE-2026-40334-653b1fce",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873",
        "target":  {
            "file":  "camlibs/ptp2/ptp-pack.c",
            "function":  "ptp_unpack_Canon_FE"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "264833626875413133082486546480536312426",
                "66162376617624956083055343090675811804",
                "216127511021842429427332640001788391942",
                "191076344472402919272878336536017125386"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-40334-e2c1dc06",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873",
        "target":  {
            "file":  "camlibs/ptp2/ptp-pack.c"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T10:49:45Z"