This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-61801 →
Categories
UBUNTU-CVE-2026-61801

The `github.com/moby/sys/user` package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions...

Original description

The description as published by the source.

The github.com/moby/sys/user package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions before 0.4.1 do not sufficiently limit entries when parsing /etc/passwd- or /etc/group-style files, allowing an attacker who can supply a specially crafted file to cause excessive memory consumption and potentially terminate the affected process due to an out-of-memory condition. This issue is patched in version 0.4.1. As a workaround, avoid parsing attacker-controlled user or group database files, or validate and limit untrusted input before parsing it.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:22.04:LTS golang-github-moby-sys
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS golang-github-moby-sys
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.10 golang-github-moby-sys
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS golang-github-moby-sys
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

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