DEBIAN-CVE-2026-88340
An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.
DEBIAN-CVE-2026-88340
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-88340
yara
Source reference: /affected/0/package/name
- Affected versions
- 4.2.3-4
Source reference:
/affected/0/versions4.3.0-1Source reference:
/affected/0/versions4.3.2-1Source reference:
/affected/0/versions4.4.0-1Source reference:
/affected/0/versions4.5.0-1Source reference:
/affected/0/versions4.5.0-1~bpo12+1Source reference:
/affected/0/versions4.5.1-1Source reference:
/affected/0/versions4.5.1-1~bpo12+1Source reference:
/affected/0/versions4.5.2-1Source reference:
/affected/0/versions4.5.2-1~bpo12+1Source reference:
/affected/0/versions4.5.3-1Source reference:
/affected/0/versions4.5.4-1Source reference:
/affected/0/versions4.5.5-1Source reference:
/affected/0/versions4.5.6-1Source reference:
/affected/0/versions4.5.7-1Source reference:
/affected/0/versions4.5.8-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
yara
Source reference: /affected/1/package/name
- Affected versions
- 4.5.2-1
Source reference:
/affected/1/versions4.5.3-1Source reference:
/affected/1/versions4.5.4-1Source reference:
/affected/1/versions4.5.5-1Source reference:
/affected/1/versions4.5.6-1Source reference:
/affected/1/versions4.5.7-1Source reference:
/affected/1/versions4.5.8-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
yara
Source reference: /affected/2/package/name
- Affected versions
- 4.5.2-1
Source reference:
/affected/2/versions4.5.3-1Source reference:
/affected/2/versions4.5.4-1Source reference:
/affected/2/versions4.5.5-1Source reference:
/affected/2/versions4.5.6-1Source reference:
/affected/2/versions4.5.7-1Source reference:
/affected/2/versions4.5.8-1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "yara",
"purl": "pkg:deb/debian/yara?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.2.3-4",
"4.3.0-1",
"4.3.2-1",
"4.4.0-1",
"4.5.0-1",
"4.5.0-1~bpo12+1",
"4.5.1-1",
"4.5.1-1~bpo12+1",
"4.5.2-1",
"4.5.2-1~bpo12+1",
"4.5.3-1",
"4.5.4-1",
"4.5.5-1",
"4.5.6-1",
"4.5.7-1",
"4.5.8-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88340.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "yara",
"purl": "pkg:deb/debian/yara?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.5.2-1",
"4.5.3-1",
"4.5.4-1",
"4.5.5-1",
"4.5.6-1",
"4.5.7-1",
"4.5.8-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88340.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "yara",
"purl": "pkg:deb/debian/yara?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.5.2-1",
"4.5.3-1",
"4.5.4-1",
"4.5.5-1",
"4.5.6-1",
"4.5.7-1",
"4.5.8-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88340.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #18762 · Revision 1
- Added to Heist Feed
- Publisher date