Bug 2523674 - CVE-2026-79992 emacs: local shell command injection through the user field in emacs tramp [fedora-all]
Summary: CVE-2026-79992 emacs: local shell command injection through the user field in...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: emacs
Version: 44
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Daiki Ueno
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["11200807-528b-4e86-9aaa-b...
Depends On:
Blocks: CVE-2026-79992
TreeView+ depends on / blocked
 
Reported: 2026-08-25 17:10 UTC by Marco Benatto
Modified: 2026-09-08 00:56 UTC (History)
8 users (show)

Fixed In Version: emacs-30.2-29.fc44 emacs-30.2-11.fc43
Clone Of:
Environment:
Last Closed: 2026-09-02 01:33:51 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Marco Benatto 2026-08-25 17:10:37 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.

Emacs TRAMP is vulnerable to a local shell command injection when processing maliciously crafted filenames. The vulnerability arises from the fact of TRAMP concatenating login arguments without a proper sanitization and further passing the result into a local shell.

Comment 1 Peter Oliver 2026-08-26 23:12:20 UTC
More info and patches at https://www.openwall.com/lists/oss-security/2026/08/21/1

Comment 2 Fedora Update System 2026-08-28 14:10:13 UTC
FEDORA-2026-e47f5a0b84 (emacs-30.2-29.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-e47f5a0b84

Comment 3 Fedora Update System 2026-08-28 18:15:10 UTC
FEDORA-2026-6b1a89dfe6 (emacs-30.2-11.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-6b1a89dfe6

Comment 4 Fedora Update System 2026-08-31 17:51:17 UTC
FEDORA-2026-e47f5a0b84 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-e47f5a0b84`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e47f5a0b84

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-08-31 18:12:02 UTC
FEDORA-2026-6b1a89dfe6 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6b1a89dfe6`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6b1a89dfe6

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-09-02 01:33:51 UTC
FEDORA-2026-e47f5a0b84 (emacs-30.2-29.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 2026-09-08 00:56:23 UTC
FEDORA-2026-6b1a89dfe6 (emacs-30.2-11.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.


Note You need to log in before you can comment on or make changes to this bug.