CVE-2026-46340 (GCVE-0-2026-46340)
Vulnerability from cvelistv5 – Published: 2026-06-12 14:19 – Updated: 2026-09-18 12:04
VLAI
EPSS
VEX
Title
Netty: SCTP reassembly nests buffers without bound
Summary
Netty is a network application framework for development of protocol servers and clients. In versions of netty-transport-sctp prior to 4.1.135.Final and 4.2.15.Final, for each non-complete SctpMessage fragment the handler does `fragments.put(streamId, Unpooled.wrappedBuffer(frag, byteBuf))`, wrapping the previous accumulator and the new slice into a *new* CompositeByteBuf every time. After N fragments the accumulator is an N-deep chain of composites, each holding references and component arrays; readableBytes()/getBytes() on the final buffer recurse N levels. There is no limit on N, on total bytes, or on the number of streamIdentifiers an attacker can open (each gets its own map entry). A peer that never sets the `complete` flag can grow this structure indefinitely from tiny 1-byte DATA chunks. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-12 16:30 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-46340 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2488388 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:53644 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:53645 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:53646 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:41951 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:50085 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:37390 | vendor-advisoryx_refsource_REDHAT |
Impacted products
41 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| netty | netty |
Affected:
>= 4.2.0.Final, < 4.2.15.Final
Affected: < 4.1.135.Final |
guessed | |
| Red Hat | Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16 |
Unaffected:
transport-sctp , < *
(rpm)
cpe:/a:redhat:apache_camel_spring_boot:4.18 |
||
| Red Hat | Red Hat Data Grid 8.6.2 |
Unaffected:
transport-sctp , < *
(rpm)
cpe:/a:redhat:jboss_data_grid:8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:2.16.0-22.redhat_00057.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:2.3.14-11.SP11_redhat_00001.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:1.5.26-2.Final_redhat_00001.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:2.18.8-1.redhat_00003.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:5.0.31-3.SP2_redhat_00001.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:1.10.0-46.Final_redhat_00044.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:4.1.135-1.Final_redhat_00001.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:2.5.5-30.SP12_redhat_00020.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:2.5.5-24.SP12_redhat_00016.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:2.2.40-2.SP3_redhat_00001.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 |
Unaffected:
0:7.4.25-2.GA_redhat_00001.1.el7eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:2.16.0-22.redhat_00057.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:2.3.14-11.SP11_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:1.5.26-2.Final_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:2.18.8-1.redhat_00003.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:5.0.31-3.SP2_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:1.10.0-46.Final_redhat_00044.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:4.1.135-1.Final_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:2.5.5-30.SP12_redhat_00020.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:2.5.5-24.SP12_redhat_00016.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:2.2.40-1.SP3_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 |
Unaffected:
0:7.4.25-2.GA_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:2.16.0-22.redhat_00057.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:2.3.14-11.SP11_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:1.5.26-2.Final_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:2.18.8-1.redhat_00003.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:5.0.31-3.SP2_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:1.10.0-46.Final_redhat_00044.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:4.1.135-1.Final_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:2.5.5-30.SP12_redhat_00020.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:2.5.5-24.SP12_redhat_00016.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:2.2.40-1.SP3_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 |
Unaffected:
0:7.4.25-2.GA_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9 |
||
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
Unaffected:
transport-sctp , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform_xp:6.0 |
||
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3
|
||
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7
|
||
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp
|
||
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7
|
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"timestamp": "2026-06-12T16:30:59.578272Z",
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"packageName": "eap7-activemq-artemis",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
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"packageName": "eap7-glassfish-jsf",
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"cpes": [
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"defaultStatus": "affected",
"packageName": "eap7-ironjacamar",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
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"packageName": "eap7-jackson-core",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
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"version": "0:2.18.8-1.redhat_00003.1.el7eap",
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{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
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"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
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{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "eap7-jboss-remoting",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
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"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7"
],
"defaultStatus": "affected",
"packageName": "eap7-jboss-server-migration",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
{
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"packageName": "eap7-netty",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
{
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"version": "0:4.1.135-1.Final_redhat_00001.1.el7eap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7"
],
"defaultStatus": "affected",
"packageName": "eap7-netty-transport-native-epoll",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.1.135-1.Final_redhat_00001.1.el7eap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7"
],
"defaultStatus": "affected",
"packageName": "eap7-picketlink-bindings",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:2.5.5-30.SP12_redhat_00020.1.el7eap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7"
],
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"packageName": "eap7-picketlink-federation",
"product": "Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
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},
{
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"cpes": [
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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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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.
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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.
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