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Date: Tue, 7 Apr 2026 22:38:55 +0100
From: Simon McVittie <smcv@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: flatpak: GHSA-89xm-3m96-w3jg: cross-user CancelPull orphans another
 user's ongoing pull
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Package: flatpak
Severity: important
Tags: security
X-Debbugs-Cc: Debian Security Team <team@security.debian.org>

Flatpak older than 1.16.4 has an issue in which one local user can 
use the CancelPull method to cancel an ongoing download by a second 
local user, preventing the second user from subsequently cancelling that 
download. This is (at least arguably) a denial of service. No CVE ID has 
been assigned: it was not clear whether this is really a security 
vulnerability, or just a bug.

I think we should fix this in the same batch as the much more serious 
CVE-2026-34078.

Thanks,
    smcv
]