CVE-2025-30211

Publication date 28 March 2025

Last updated 8 October 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.1, 26.2.5.10, and 25.3.2.19, a maliciously formed KEX init message can result with high memory usage. Implementation does not verify RFC specified limits on algorithm names (64 characters) provided in KEX init message. Big KEX init packet may lead to inefficient processing of the error data. As a result, large amount of memory will be allocated for processing malicious data. Versions OTP-27.3.1, OTP-26.2.5.10, and OTP-25.3.2.19 fix the issue. Some workarounds are available. One may set option `parallel_login` to `false` and/or reduce the `max_sessions` option.

Status

Package Ubuntu Release Status
erlang 26.04 LTS resolute
Fixed 1:27.3+dfsg-1ubuntu1
25.10 questing
Fixed 1:27.3+dfsg-1ubuntu1
25.04 plucky
Fixed 1:27.3+dfsg-1ubuntu1
24.10 oracular
Fixed 1:25.3.2.12+dfsg-1ubuntu2.2
24.04 LTS noble
Fixed 1:25.3.2.8+dfsg-1ubuntu4.2
22.04 LTS jammy
Fixed 1:24.2.1+dfsg-1ubuntu0.3
20.04 LTS focal
Fixed 1:22.2.7+dfsg-1ubuntu0.4
18.04 LTS bionic
Fixed 1:20.2.2+dfsg-1ubuntu2+esm4
16.04 LTS xenial
Fixed 1:18.3-dfsg-1ubuntu3.1+esm4
14.04 LTS trusty
Fixed 1:16.b.3-dfsg-1ubuntu2.2+esm3

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Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references

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