Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.
The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.
A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.
This issue affects OTP from OTP 17.0 before OTP 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to erts from 6.0 before 17.0.2, 16.4.0.2 and 15.2.7.9.
References
Configurations
Configuration 1 (hide)
|
History
24 Jul 2026, 15:17
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (en) Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk. The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service. A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited. This issue affects OTP from OTP 17.0 before OTP 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to erts from 6.0 before 17.0.2, 16.4.0.2 and 15.2.7.9. |
30 Jun 2026, 03:20
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| CWE | CWE-120 |
15 Jun 2026, 18:24
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.2 |
| CPE | cpe:2.3:a:erlang:erts:*:*:*:*:*:*:*:* cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| References | () https://cna.erlef.org/cves/CVE-2026-49759.html - Third Party Advisory | |
| References | () https://github.com/erlang/otp/commit/3983d495284331c121f600a80bac9fcf4e16381e - Patch | |
| References | () https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97 - Vendor Advisory | |
| References | () https://osv.dev/vulnerability/EEF-CVE-2026-49759 - Third Party Advisory | |
| References | () https://www.erlang.org/doc/system/versions.html#order-of-versions - Product | |
| First Time |
Erlang erlang\/otp
Erlang Erlang erts |
10 Jun 2026, 16:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-10 16:17
Updated : 2026-07-24 15:17
NVD link : CVE-2026-49759
Mitre link : CVE-2026-49759
CVE.ORG link : CVE-2026-49759
JSON object : View
Products Affected
erlang
- erts
- erlang\/otp