ubuntu-cve-2026-7568
Vulnerability from osv_ubuntu
Published
2026-05-10 05:16
Modified
2026-07-06 14:08
Summary
Details
In PHP versions 8.2. before 8.2.31, 8.3. before 8.3.31, 8.4. before 8.4.21, and 8.5. before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.
Severity
7.5 (High)
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
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"binary_name": "php8.4-zip",
"binary_version": "8.4.11-1ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "php8.4",
"purl": "pkg:deb/ubuntu/php8.4@8.4.11-1ubuntu1.2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.4.11-1ubuntu1.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.4.5-1ubuntu1",
"8.4.8-1ubuntu1",
"8.4.11-1ubuntu1",
"8.4.11-1ubuntu1.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libapache2-mod-php8.5",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "libphp8.5-embed",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-bcmath",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-bz2",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-cgi",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-cli",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-common",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-curl",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-dba",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-enchant",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-fpm",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-gd",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-gmp",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-interbase",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-intl",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-ldap",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-litespeed",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-mbstring",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-mysql",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-odbc",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-pgsql",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-phpdbg",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-readline",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-snmp",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-soap",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-sqlite3",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-sybase",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-tidy",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-xml",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-xsl",
"binary_version": "8.5.4-0ubuntu1.1"
},
{
"binary_name": "php8.5-zip",
"binary_version": "8.5.4-0ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "php8.5",
"purl": "pkg:deb/ubuntu/php8.5@8.5.4-0ubuntu1.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.5.4-0ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.5.2-0ubuntu1",
"8.5.4-0ubuntu1"
]
}
],
"aliases": [],
"details": "In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.",
"id": "UBUNTU-CVE-2026-7568",
"modified": "2026-07-06T14:08:40Z",
"published": "2026-05-10T05:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-7568"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-7568"
},
{
"type": "REPORT",
"url": "https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8336-1"
}
],
"related": [
"USN-8336-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/RE:L/U:Amber",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-7568"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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