CVE-2021-26461 (GCVE-0-2021-26461)
Vulnerability from cvelistv5 – Published: 2021-06-21 17:10 – Updated: 2024-08-03 20:26
VLAI
EPSS
VEX
Title
malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds
Summary
Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and memalign. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Severity
9.8 (Critical)
CWE
- CWE-190 - INTEGER OVERFLOW OR WRAPAROUND CWE-190
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/r806fccf8b00… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache NuttX |
Affected:
Apache NuttX , < 10.1.0
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T20:26:25.470Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"platforms": [
"INTEGER OVERFLOW OR WRAPAROUND CWE-190"
],
"product": "Apache NuttX",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "10.1.0",
"status": "affected",
"version": "Apache NuttX",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Apache NuttX would like to thank Omri Ben-Bassat of Section 52 at Azure Defender for IoT of Microsoft Corp for bringing this issue to our attention."
}
],
"descriptions": [
{
"lang": "en",
"value": "Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and memalign. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-190",
"description": "INTEGER OVERFLOW OR WRAPAROUND CWE-190",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-06-21T17:10:10.000Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"AKA": "BadAlloc",
"ASSIGNER": "security@apache.org",
"ID": "CVE-2021-26461",
"STATE": "PUBLIC",
"TITLE": "malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Apache NuttX",
"version": {
"version_data": [
{
"platform": "INTEGER OVERFLOW OR WRAPAROUND CWE-190",
"version_affected": "\u003c",
"version_name": "Apache NuttX",
"version_value": "10.1.0"
}
]
}
}
]
},
"vendor_name": "Apache Software Foundation"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Apache NuttX would like to thank Omri Ben-Bassat of Section 52 at Azure Defender for IoT of Microsoft Corp for bringing this issue to our attention."
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and memalign. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "INTEGER OVERFLOW OR WRAPAROUND CWE-190"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E",
"refsource": "MISC",
"url": "https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E"
}
]
},
"source": {
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2021-26461",
"datePublished": "2021-06-21T17:10:11.000Z",
"dateReserved": "2021-01-30T00:00:00.000Z",
"dateUpdated": "2024-08-03T20:26:25.470Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-26461",
"date": "2026-10-21",
"epss": "0.05038",
"percentile": "0.92233"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*",
"matchCriteriaId": "51892CA5-29E2-45AF-9BDC-BA900F75A602",
"versionEndExcluding": "10.1.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and memalign. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution."
},
{
"lang": "es",
"value": "Apache Nuttx versiones anteriores a 10.1.0, son vulnerables a una envoltura de enteros en las funciones malloc, realloc y memalign. Esta asignaci\u00f3n de memoria inapropiada puede conllevar a una asignaci\u00f3n de memoria arbitraria, resultando en un comportamiento inesperado, tal y como un bloqueo o una inyecci\u00f3n y ejecuci\u00f3n de c\u00f3digo remota"
}
],
"id": "CVE-2021-26461",
"lastModified": "2024-11-21T05:56:24.700",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-06-21T17:15:09.103",
"references": [
{
"source": "security@apache.org",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E"
}
],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-190"
}
],
"source": "security@apache.org",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-190"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T14:29:21+00:00",
"cve": "CVE-2021-26461",
"id": "CVE-2021-26461",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-26461.json",
"version": "3"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
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.