UBUNTU-CVE-2026-49282 (CVE-2026-49282)
Vulnerability from osv_ubuntu – Published: 2026-08-14 18:17 – Updated: 2026-08-19 11:05 – Source website
VLAI
Details
Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public cs_insn_name() API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most backends validate the ID before indexing instruction-name tables, but the M68K and RISCV backends have missing or incomplete bounds checks. On a Capstone handle opened for M68K or RISCV, a caller-controlled invalid instruction ID can trigger an out-of-bounds read and crash the process. The demonstrated impact is availability loss in applications or bindings that expose instruction-name lookup to untrusted IDs. No code execution or data disclosure was demonstrated. Version 6.0.0-Alpha9 patches the issue.
Severity
5.1 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcapstone3",
"binary_version": "3.0.4-0.2"
},
{
"binary_name": "python-capstone",
"binary_version": "3.0.4-0.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "capstone",
"purl": "pkg:deb/ubuntu/capstone@3.0.4-0.2?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.4-0.1",
"3.0.4-0.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libcapstone3",
"binary_version": "3.0.4-5"
},
{
"binary_name": "python-capstone",
"binary_version": "3.0.4-5"
},
{
"binary_name": "python3-capstone",
"binary_version": "3.0.4-5"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "capstone",
"purl": "pkg:deb/ubuntu/capstone@3.0.4-5?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.4-3",
"3.0.4-5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "capstone-tool",
"binary_version": "4.0.1+really+3.0.5-1build1"
},
{
"binary_name": "libcapstone3",
"binary_version": "4.0.1+really+3.0.5-1build1"
},
{
"binary_name": "python-capstone",
"binary_version": "4.0.1+really+3.0.5-1build1"
},
{
"binary_name": "python3-capstone",
"binary_version": "4.0.1+really+3.0.5-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "capstone",
"purl": "pkg:deb/ubuntu/capstone@4.0.1+really+3.0.5-1build1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.1+really+3.0.5-1",
"4.0.1+really+3.0.5-1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "capstone-tool",
"binary_version": "4.0.2-5"
},
{
"binary_name": "libcapstone4",
"binary_version": "4.0.2-5"
},
{
"binary_name": "python3-capstone",
"binary_version": "4.0.2-5"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "capstone",
"purl": "pkg:deb/ubuntu/capstone@4.0.2-5?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.2-3",
"4.0.2-3build1",
"4.0.2-5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "capstone-tool",
"binary_version": "4.0.2-5.1build1"
},
{
"binary_name": "libcapstone4",
"binary_version": "4.0.2-5.1build1"
},
{
"binary_name": "python3-capstone",
"binary_version": "4.0.2-5.1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "capstone",
"purl": "pkg:deb/ubuntu/capstone@4.0.2-5.1build1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.2-5",
"4.0.2-5ubuntu1",
"4.0.2-5.1",
"4.0.2-5.1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "capstone-tool",
"binary_version": "5.0.7-2"
},
{
"binary_name": "libcapstone5",
"binary_version": "5.0.7-2"
},
{
"binary_name": "python3-capstone",
"binary_version": "5.0.7-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "capstone",
"purl": "pkg:deb/ubuntu/capstone@5.0.7-2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.0.6-1",
"5.0.6-1build1",
"5.0.7-2"
]
}
],
"aliases": [],
"details": "Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone\u0027s public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most backends validate the ID before indexing instruction-name tables, but the M68K and RISCV backends have missing or incomplete bounds checks. On a Capstone handle opened for M68K or RISCV, a caller-controlled invalid instruction ID can trigger an out-of-bounds read and crash the process. The demonstrated impact is availability loss in applications or bindings that expose instruction-name lookup to untrusted IDs. No code execution or data disclosure was demonstrated. Version 6.0.0-Alpha9 patches the issue.",
"id": "UBUNTU-CVE-2026-49282",
"modified": "2026-08-19T11:05:28Z",
"published": "2026-08-14T18:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-49282"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-49282"
},
{
"type": "REPORT",
"url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-jrw4-wj52-2vw8"
},
{
"type": "REPORT",
"url": "https://github.com/capstone-engine/capstone/blob/251c5bb4bc9bb92973e738ae3c5f4ef86f103356/ChangeLog#L102"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-49282"
]
}
Loading…
Loading…
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.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…