HighFix available
php8.2, php8.4 — security advisory
In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.
- Products
- php8.2, php8.4
- Affected versions
- 8.2.10-1, 8.2.10-2, 8.2.12-1, 8.2.16-1, 8.2.16-2, 8.2.17-1, 8.2.18-1, 8.2.18-1~deb12u1, 8.2.20-1~deb12u1, 8.2.20-2, 8.2.20-3, 8.2.21-1, 8.2.23-1, 8.2.24-1, 8.2.24-1~deb12u1, 8.2.26-1~deb12u1, 8.2.26-4, 8.2.27-1, 8.2.28-1~deb12u1, 8.2.29-1~deb12u1, 8.2.5-2, 8.2.7-1, 8.2.7-1.1, 8.2.7-1.2, 8.2.7-1~deb12u1, 8.4.11-1, 8.4.16-1~deb13u1
- Fixed versions
- 8.2.30-1~deb12u1, 8.4.16-1, 8.4.16-1~deb13u1
- CVEs
- CVE-2025-14177
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 11:48 UTC · Revision 1
Source evidence
In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.
osv:DEBIAN-CVE-2025-14177
php8.2
Fixed versions: 8.2.30-1~deb12u1
php8.4
Fixed versions: 8.4.16-1~deb13u1
php8.4
Fixed versions: 8.4.16-1
Complete source record
{
"id": "76f6fac93d26c17a5a47a78d4e152a5057a574946ec8519c40859ea7128310d9",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2025-14177",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2025-14177",
"summary": "In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.",
"evidence": "osv:DEBIAN-CVE-2025-14177",
"products": [
{
"name": {
"value": "php8.2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.2.30-1~deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "8.2.10-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.10-2",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.12-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.16-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.16-2",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.17-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.18-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.18-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.20-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.20-2",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.20-3",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.21-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.23-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.24-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.24-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.26-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.26-4",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.27-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.28-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.29-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.5-2",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.7-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.7-1.2",
"evidence": "/affected/0/versions"
},
{
"value": "8.2.7-1~deb12u1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "php8.4",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.4.16-1~deb13u1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "8.4.11-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "php8.4",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.4.16-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "8.4.11-1",
"evidence": "/affected/2/versions"
},
{
"value": "8.4.16-1~deb13u1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2025-14177",
"aliases": [
"DEBIAN-CVE-2025-14177"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.2.30-1~deb12u1"
}
]
}
],
"package": {
"name": "php8.2",
"purl": "pkg:deb/debian/php8.2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"8.2.10-1",
"8.2.10-2",
"8.2.12-1",
"8.2.16-1",
"8.2.16-2",
"8.2.17-1",
"8.2.18-1",
"8.2.18-1~deb12u1",
"8.2.20-1~deb12u1",
"8.2.20-2",
"8.2.20-3",
"8.2.21-1",
"8.2.23-1",
"8.2.24-1",
"8.2.24-1~deb12u1",
"8.2.26-1~deb12u1",
"8.2.26-4",
"8.2.27-1",
"8.2.28-1~deb12u1",
"8.2.29-1~deb12u1",
"8.2.5-2",
"8.2.7-1",
"8.2.7-1.1",
"8.2.7-1.2",
"8.2.7-1~deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-14177.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.4.16-1~deb13u1"
}
]
}
],
"package": {
"name": "php8.4",
"purl": "pkg:deb/debian/php8.4?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"8.4.11-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-14177.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.4.16-1"
}
]
}
],
"package": {
"name": "php8.4",
"purl": "pkg:deb/debian/php8.4?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"8.4.11-1",
"8.4.16-1~deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-14177.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-14T09:47:36.792229255Z",
"provider": "osv",
"upstream": [
"CVE-2025-14177"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2025-14177"
]
},
"related_cves": [
{
"value": "CVE-2025-14177",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 315353,
"published_at": "2025-12-27T20:15:40.4+00:00"
}