ubuntu-cve-2026-44597
Vulnerability from osv_ubuntu
Published
2026-05-07 01:16
Modified
2026-05-20 15:28
Summary
Details
Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in its payload, aka TROVE-2026-011.
Severity
9.1 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.2.4.27-1ubuntu0.1+esm2"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.2.4.27-1ubuntu0.1+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.2.4.27-1ubuntu0.1+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.2.3.25-1",
"0.2.4.19-1",
"0.2.4.20-1",
"0.2.4.27-1build0.14.04.1",
"0.2.4.27-1ubuntu0.1",
"0.2.4.27-1ubuntu0.1+esm1",
"0.2.4.27-1ubuntu0.1+esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.2.9.14-1ubuntu1~16.04.3+esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.2.6.10-1ubuntu2",
"0.2.7.6-1ubuntu1",
"0.2.9.11-1ubuntu1~16.04.1",
"0.2.9.14-1ubuntu1~16.04.1",
"0.2.9.14-1ubuntu1~16.04.2",
"0.2.9.14-1ubuntu1~16.04.3",
"0.2.9.14-1ubuntu1~16.04.3+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.3.2.10-1ubuntu0.2~esm2"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.3.2.10-1ubuntu0.2~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.3.2.10-1ubuntu0.2~esm2?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.3.0.10-1",
"0.3.1.8-2",
"0.3.1.9-1",
"0.3.2.9-1",
"0.3.2.9-1build1",
"0.3.2.10-1",
"0.3.2.10-1ubuntu0.1",
"0.3.2.10-1ubuntu0.2~esm1",
"0.3.2.10-1ubuntu0.2~esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.4.2.7-1ubuntu0.1~esm1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.4.2.7-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.4.2.7-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.1.5-1",
"0.4.1.5-1build1",
"0.4.1.6-1",
"0.4.2.5-1",
"0.4.2.6-1",
"0.4.2.7-1",
"0.4.2.7-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.4.6.10-1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.4.6.10-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.4.6.10-1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.5.9-1",
"0.4.6.8-1",
"0.4.6.8-1build1",
"0.4.6.9-1",
"0.4.6.10-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.4.8.10-1build2"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.4.8.10-1build2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.4.8.10-1build2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.8.4-2",
"0.4.8.7-1",
"0.4.8.9-1",
"0.4.8.10-1",
"0.4.8.10-1build1",
"0.4.8.10-1build2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.4.8.16-1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.4.8.16-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.4.8.16-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.8.14-1",
"0.4.8.16-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tor",
"binary_version": "0.4.9.6-1"
},
{
"binary_name": "tor-geoipdb",
"binary_version": "0.4.9.6-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tor",
"purl": "pkg:deb/ubuntu/tor@0.4.9.6-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.8.16-1",
"0.4.8.21-1",
"0.4.8.22-1",
"0.4.9.6-1"
]
}
],
"aliases": [],
"details": "Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in its payload, aka TROVE-2026-011.",
"id": "UBUNTU-CVE-2026-44597",
"modified": "2026-05-20T15:28:57Z",
"published": "2026-05-07T01:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-44597"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-44597"
},
{
"type": "REPORT",
"url": "https://forum.torproject.org/c/news/tor-release-announcement/28"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2026/05/06/8"
},
{
"type": "REPORT",
"url": "https://gitlab.torproject.org/tpo/core/tor/-/work_items/41254"
},
{
"type": "REPORT",
"url": "https://gitlab.torproject.org/tpo/core/tor/-/commit/8f98054b1982d00a14639864d03e9afd90b87481"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-44597"
]
}
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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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