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Bug 775365 (CVE-2021-21381, GHSA-xgh4-387p-hqpp) - <sys-apps/flatpak-1.10.2: Sandbox break (CVE-2021-21381)
Summary: <sys-apps/flatpak-1.10.2: Sandbox break (CVE-2021-21381)
Alias: CVE-2021-21381, GHSA-xgh4-387p-hqpp
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa?]
Depends on:
Reported: 2021-03-11 06:54 UTC by Sam James
Modified: 2022-06-02 22:06 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Sam James archtester Gentoo Infrastructure gentoo-dev Security 2021-03-11 06:54:33 UTC
"flatpak since 0.9.4 has a vulnerability in the "file forwarding" feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by the app's permissions."

Please bump to 1.10.2.
Comment 1 Larry the Git Cow gentoo-dev 2021-03-11 07:11:35 UTC
The bug has been referenced in the following commit(s):

commit f1015a3fd27008c326e7bd12b5f754ed663b6fdd
Author:     Zac Medico <>
AuthorDate: 2021-03-11 07:10:50 +0000
Commit:     Zac Medico <>
CommitDate: 2021-03-11 07:10:59 +0000

    sys-apps/flatpak: Bump to version 1.10.2
    Package-Manager: Portage-3.0.17, Repoman-3.0.2
    Signed-off-by: Zac Medico <>

 sys-apps/flatpak/Manifest              |   1 +
 sys-apps/flatpak/flatpak-1.10.2.ebuild | 101 +++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+)
Comment 2 Andreas Sturmlechner gentoo-dev 2021-06-06 16:14:35 UTC
So, should this be stabilised now...?
Comment 3 Zac Medico gentoo-dev 2021-06-06 17:23:44 UTC
Yes, please stablilize.
Comment 4 Agostino Sarubbo gentoo-dev 2021-06-07 14:15:18 UTC
amd64 stable
Comment 5 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2021-06-07 23:10:34 UTC
arm64 done
Comment 6 Agostino Sarubbo gentoo-dev 2021-06-09 06:25:44 UTC
x86 stable.

Maintainer(s), please cleanup.
Security, please vote.
Comment 7 NATTkA bot gentoo-dev 2021-10-10 03:56:49 UTC Comment hidden (obsolete)
Comment 8 NATTkA bot gentoo-dev 2022-02-04 10:29:09 UTC
Unable to check for sanity:

> no match for package: sys-apps/flatpak-1.10.5