CVE-2026-6369

Medium

Description

An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to obtain a sensitive, root-level authentication token by sending an unauthenticated request to the livepatchd.sock Unix domain socket. This vulnerability is exploitable on systems where an administrator has already enabled the Livepatch client with a valid Ubuntu Pro subscription. This token allows an attacker to access Livepatch services using the victim's credentials, as well as potentially cause issues to the Livepatch server.

SeverityMedium
CVSS5.5
Exploit probability—
ProductCanonical Livepatch Client
PublishedApr 20, 2026
First seenApr 20, 2026

How to fix

Update
  • canonical livepatch_client10.15.0 or later

Affected products

ProductAffected versionsFixed in
canonical livepatch_clientv < 10.15.010.15.0

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