[GH-ISSUE #7121] firefox: incorrect timezone #3493

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opened 2026-05-05 10:01:56 -06:00 by gitea-mirror · 0 comments

gitea-mirror commented

2026-05-05 10:01:56 -06:00

Owner

Originally created by @kmille on GitHub (Mar 31, 2026).
Original GitHub issue: https://github.com/netblue30/firejail/issues/7121

Steps to Reproduce

Open Firefox
Go to https://www.browserscan.net/de/timezone
It shows: Arctic/Longyearbyen

Expected behavior

The correct timezone. Problem does not occur when not using firejail.

kmille@spring:~# timedatectl    
               Local time: Tue 2026-03-31 12:01:43 CEST
           Universal time: Tue 2026-03-31 10:01:43 UTC
                 RTC time: Tue 2026-03-31 10:01:43
                Time zone: Europe/Berlin (CEST, +0200)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

Behavior without a profile

When executing LC_ALL=C firejail --noprofile /usr/bin/firefox:
Timezone is correct: Europe/Berlin

Environment

Name/version/arch of the Linux kernel: Linux 6.19.9-hardened1-1-hardened x86_64
Name/version of the Linux distribution: Arch Linux
Name/version of the relevant program(s)/package(s): Firefox 148.0.2-
Version of Firejail: 0.9.80.r9.gfb4dc873d-1

Checklist

I am using firejail 0.9.80 or later
I am using the full program path (e.g. firejail /usr/bin/vlc instead of firejail vlc; see https://github.com/netblue30/firejail/issues/2877)
The issues is caused by firejail (i.e. running the program by path (e.g. /usr/bin/vlc) "fixes" it).
I can reproduce the issue without custom modifications (e.g. globals.local).
The program has a profile. (If not, request one in https://github.com/netblue30/firejail/issues/1139)
The profile (and redirect profile if exists) hasn't already been fixed upstream.
I have performed a short search for similar issues (to avoid opening a duplicate).
[x ] I'm aware of browser-allow-drm yes/browser-disable-u2f no in firejail.config to allow DRM/U2F in browsers.
I used --profile=PROFILENAME to set the right profile. (Only relevant for AppImages)

Log

No erros on the command line.

Curently no time to debug, sorry.

Originally created by @kmille on GitHub (Mar 31, 2026). Original GitHub issue: https://github.com/netblue30/firejail/issues/7121 ### Steps to Reproduce 1) Open Firefox 2) Go to https://www.browserscan.net/de/timezone 3) It shows: Arctic/Longyearbyen ### Expected behavior The correct timezone. Problem does not occur when not using firejail. ``` kmille@spring:~# timedatectl Local time: Tue 2026-03-31 12:01:43 CEST Universal time: Tue 2026-03-31 10:01:43 UTC RTC time: Tue 2026-03-31 10:01:43 Time zone: Europe/Berlin (CEST, +0200) System clock synchronized: yes NTP service: active RTC in local TZ: no ``` ### Behavior without a profile When executing `LC_ALL=C firejail --noprofile /usr/bin/firefox`: Timezone is correct: Europe/Berlin ### Environment - Name/version/arch of the Linux kernel: Linux 6.19.9-hardened1-1-hardened x86_64 - Name/version of the Linux distribution: Arch Linux - Name/version of the relevant program(s)/package(s): Firefox 148.0.2- - Version of Firejail: 0.9.80.r9.gfb4dc873d-1 ### Checklist - [x] I am using firejail [0.9.80 or later](https://github.com/netblue30/firejail/tree/master/SECURITY.md) - [x] I am using the full program path (e.g. `firejail /usr/bin/vlc` instead of `firejail vlc`; see `https://github.com/netblue30/firejail/issues/2877`) - [x] The issues is caused by firejail (i.e. running the program by path (e.g. `/usr/bin/vlc`) "fixes" it). - [ ] I can reproduce the issue without custom modifications (e.g. globals.local). - [x] The program has a profile. (If not, request one in `https://github.com/netblue30/firejail/issues/1139`) - [ ] The profile (and redirect profile if exists) hasn't already been fixed [upstream](https://github.com/netblue30/firejail/tree/master/etc). - [x] I have performed a short search for similar issues (to avoid opening a duplicate). - [x ] I'm aware of `browser-allow-drm yes`/`browser-disable-u2f no` in `firejail.config` to allow DRM/U2F in browsers. - [x] I used `--profile=PROFILENAME` to set the right profile. (Only relevant for AppImages) ### Log No erros on the command line. Curently no time to debug, sorry.