Ubuntu update for erlang

1) Uncontrolled Memory Allocation

EUVDB-ID: #VU106381

Risk: High

CVSSv4.0: 6.6 [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:U/U:Amber]

CVE-ID: CVE-2025-30211

CWE-ID: CWE-789 - Uncontrolled Memory Allocation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to implementation does not verify RFC specified limits on algorithm names provided in KEX init message. A remote attacker can cause a denial of service (DoS) condition on the target system.

Mitigation

Update the affected package erlang to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 24.10

erlang-ssh (Ubuntu package): before 1:22.2.7+dfsg-1ubuntu0.4

erlang (Ubuntu package): before 1:22.2.7+dfsg-1ubuntu0.4

CPE2.3

• cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
• cpe:2.3:a:canonical:erlang-ssh_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:erlang_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-7425-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.