Bug 2524927 - CVE-2026-76925 flatpak: Flatpak: TOCTOU race condition allows symlink redirection [fedora-all]
Summary: CVE-2026-76925 flatpak: Flatpak: TOCTOU race condition allows symlink redirec...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: flatpak
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: David King
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["b2d2c1f7-60ea-4e96-9a43-2...
Depends On:
Blocks: CVE-2026-76925
TreeView+ depends on / blocked
 
Reported: 2026-08-27 10:49 UTC by Sandipan Roy
Modified: 2026-09-04 18:31 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-09-04 18:31:15 UTC
Type: ---
Embargoed:

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Description Sandipan Roy 2026-08-27 10:49:32 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

TOCTOU race in org.freedesktop.Flatpak.SystemHelper — privileged chmod runs before OSTree repo validation in Deploy(), allowing symlink redirection to arbitrary files.
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