Bug 2456893 - CVE-2026-39860 nix: privilege escalation via symlink following during output registration [fedora-all]
Summary: CVE-2026-39860 nix: privilege escalation via symlink following during output ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: nix
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Jens Petersen
QA Contact:
URL:
Whiteboard: AcceptedFreezeException {"flaws": ["1...
Depends On:
Blocks: CVE-2026-39860 F44FinalFreezeException
TreeView+ depends on / blocked
 
Reported: 2026-04-09 13:19 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-04-17 01:43 UTC (History)
1 user (show)

Fixed In Version: nix-2.34.5-1.fc44 nix-2.31.4-1.fc43 nix-2.31.4-1.fc42
Clone Of:
Environment:
Last Closed: 2026-04-16 23:41:03 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2026-04-09 13:19:31 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.

Comment 1 Fedora Update System 2026-04-10 03:58:19 UTC
FEDORA-2026-8c7366e046 (nix-2.34.5-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-8c7366e046

Comment 2 Fedora Update System 2026-04-10 03:59:17 UTC
FEDORA-2026-6c1a1c78c1 (nix-2.31.4-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-6c1a1c78c1

Comment 3 Fedora Update System 2026-04-10 03:59:49 UTC
FEDORA-2026-02fa328deb (nix-2.31.4-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-02fa328deb

Comment 4 Jens Petersen 2026-04-13 12:41:38 UTC
See https://github.com/NixOS/nix/security/advisories/GHSA-g3g9-5vj6-r3gj for more details.

Comment 5 Lukas Ruzicka 2026-04-13 18:32:14 UTC
AGREED AcceptedFinalFreezeException

Discussed at the 2026-04-13 (blocker / freeze exception) review meeting:

This is accepted as it's nice to fix CVEs in the stable repo for folks installing or upgrading ahead of release. It's not a blocker as nix isn't included in any release-blocking images by default.

https://meetbot-raw.fedoraproject.org//blocker-review_matrix_fedoraproject-org/2026-04-13/f44-blocker-review.2026-04-13-16.00.log.txt

Comment 6 Fedora Update System 2026-04-16 23:41:03 UTC
FEDORA-2026-8c7366e046 (nix-2.34.5-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2026-04-17 00:53:43 UTC
FEDORA-2026-6c1a1c78c1 (nix-2.31.4-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-04-17 01:11:54 UTC
FEDORA-2026-02fa328deb (nix-2.31.4-1.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.


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