LowFix available
libgphoto2 — security advisory
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.
- 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-2026-40334
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:41 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-40334
libgphoto2
Fixed versions: Not specified
libgphoto2
Fixed versions: Not specified
libgphoto2
Fixed versions: 2.5.34-1
Complete source record
{
"id": "1dece6a3c783dd47bd825708e5f2a25516666b019886d6a09ad4f65fd8ba8f20",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40334",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-40334",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-40334",
"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": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"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"
},
{
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"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"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-2026-40334",
"aliases": [
"DEBIAN-CVE-2026-40334"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/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-2026-40334.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-2026-40334.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-2026-40334.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:32.352663341Z",
"provider": "osv",
"upstream": [
"CVE-2026-40334"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-40334"
]
},
"related_cves": [
{
"value": "CVE-2026-40334",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460984,
"published_at": "2026-04-18T00:16:37.257+00:00"
}