MediumFix available
libgphoto2 — security advisory
libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 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-2026-40333
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:49 UTC · Revision 1
Source evidence
libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.
osv:DEBIAN-CVE-2026-40333
libgphoto2
Fixed versions: Not specified
libgphoto2
Fixed versions: Not specified
libgphoto2
Fixed versions: 2.5.34-1
Complete source record
{
"id": "4010fd0a06632c5485508355011c52099e7286f1d346c5ee9d36f5dd4206b1ad",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40333",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-40333",
"summary": "libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.",
"evidence": "osv:DEBIAN-CVE-2026-40333",
"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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},
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"affected_versions": [
{
"value": "2.5.31-4",
"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
"value": "2.5.33-1",
"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
},
{
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}
]
},
{
"name": {
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},
"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": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-40333",
"aliases": [
"DEBIAN-CVE-2026-40333"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libgphoto2",
"purl": "pkg:deb/debian/libgphoto2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
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"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-2026-40333.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-2026-40333.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-2026-40333.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:42.495458569Z",
"provider": "osv",
"upstream": [
"CVE-2026-40333"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-40333"
]
},
"related_cves": [
{
"value": "CVE-2026-40333",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461284,
"published_at": "2026-04-18T00:16:37.12+00:00"
}