Upstream information
Description
Missing Release of Resource after Effective Lifetime vulnerability in Erlang/OTP inets httpd allows an unauthenticated remote attacker to cause denial of service by sending a request with a chunked body whose chunk-size line is not a hexadecimal number. The worker serving the connection is never released and no timeout reclaims it, so repeating the request across connections occupies every available worker and denies service to legitimate clients. No authentication is required and the default configuration is affected.The chunk-size line must arrive in a write separate from the headers. When the body accompanies the headers, httpd_request_handler:handle_body/3 calls http_chunk:decode/3 inside a try ... catch throw:Error, so the {error, {chunk_size, _}} thrown by http_chunk:decode_size/4 is answered with 400 Bad Request. When the chunk size arrives later, the decoder is resumed through a bare catch in httpd_request_handler:handle_info/2, which converts the throw into a return value rather than raising it; the resulting error tuple is then treated as the next decoder continuation, the socket is re-armed, and the worker waits for data that never comes. The request timeout has already been cancelled at the point the headers were accepted, and the periodic byte-rate check is only armed when minimum_bytes_per_second is configured, which it is not by default.
This issue affects OTP from OTP 18.1.4 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 6.0.3 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2.
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
| CVSS detail | CNA (6b3ad84c-e1a6-4bf7-a703-f496b71e49db) | SUSE |
|---|---|---|
| Base Score | 8.7 | 8.7 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | None | None |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | High | High |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | erlang26 | Affected |
| SUSE Linux Enterprise Server 15 SP7 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP7 | erlang26 | Affected |
| SUSE Linux Enterprise Server 16.0 | erlang | Affected |
| SUSE Linux Enterprise Server 16.1 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | erlang26 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | erlang | Affected |
| openSUSE Leap 16.0 | erlang | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | erlang26 | Affected |
| SUSE Linux Enterprise Server 15 SP4 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP5 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP6 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP6 | erlang26 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | erlang26 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | erlang26 | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 7 | erlang | Affected |
| SUSE Enterprise Storage 7.1 | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | erlang | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | erlang | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | erlang | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | erlang | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | erlang | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP2 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP3 | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | erlang | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | erlang | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | erlang | Affected |
| SUSE Manager Proxy 4.1 | erlang | Affected |
| SUSE Manager Proxy 4.2 | erlang | Affected |
| SUSE Manager Proxy 4.3 | erlang | Affected |
| SUSE Manager Proxy LTS 4.3 | erlang | Affected |
| SUSE Manager Retail Branch Server 4.1 | erlang | Affected |
| SUSE Manager Retail Branch Server 4.2 | erlang | Affected |
| SUSE Manager Retail Branch Server 4.3 | erlang | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | erlang | Affected |
| SUSE Manager Server 4.1 | erlang | Affected |
| SUSE Manager Server 4.2 | erlang | Affected |
| SUSE Manager Server 4.3 | erlang | Affected |
| SUSE Manager Server LTS 4.3 | erlang | Affected |
| openSUSE Leap 15.3 | erlang | Affected |
| openSUSE Leap 15.4 | erlang | Affected |
| openSUSE Leap 15.5 | erlang | Affected |
| openSUSE Leap 15.6 | erlang | Affected |
| openSUSE Leap 15.6 | erlang26 | Affected |
SUSE Timeline for this CVE
CVE page created: Wed Sep 2 12:15:35 2026CVE page last modified: Wed Sep 2 17:12:58 2026