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[GH-ISSUE #4395] Firejail rejects empty arguments #2650

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opened 2026-05-05 09:18:50 -06:00 by gitea-mirror · 3 comments

gitea-mirror commented

2026-05-05 09:18:50 -06:00

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Originally created by @reinerh on GitHub (Jul 11, 2021).
Original GitHub issue: https://github.com/netblue30/firejail/issues/4395

A Ubuntu user reported that firejail rejects arguments to the application if they are empty.
But for some applications empty arguments are actually valid use cases.
Even with the argument separator (--) firejail still rejects it.

Example:

$ echo ''

$ firejail -- echo ''
Error: too short arguments
$

This is the location of the check: e66ba7cc48/src/firejail/main.c (L1027-L1030)

Originally created by @reinerh on GitHub (Jul 11, 2021). Original GitHub issue: https://github.com/netblue30/firejail/issues/4395 A Ubuntu user [reported](https://bugs.launchpad.net/ubuntu/+source/firejail/+bug/1934698) that firejail rejects arguments to the application if they are empty. But for some applications empty arguments are actually valid use cases. Even with the argument separator (`--`) firejail still rejects it. Example: ``` $ echo '' $ firejail -- echo '' Error: too short arguments $ ``` This is the location of the check: https://github.com/netblue30/firejail/blob/e66ba7cc483df0de8060823ebd7ebaff9c7c61c2/src/firejail/main.c#L1027-L1030

gitea-mirror

2026-05-05 09:18:50 -06:00

closed this issue
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gitea-mirror commented

2026-05-05 09:18:53 -06:00

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@netblue30 commented on GitHub (Jul 11, 2021):

will do, thanks!

@netblue30 commented on GitHub (Jul 11, 2021): will do, thanks!

gitea-mirror commented

2026-05-05 09:18:54 -06:00

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@rusty-snake commented on GitHub (Dec 21, 2021):

fix bug: firejail rejects empty arguments

So we can close here?

@rusty-snake commented on GitHub (Dec 21, 2021): > [fix bug: firejail rejects empty arguments](https://github.com/netblue30/firejail/commit/eba4af3be75f58cc6d27a368dcc53fe6461de033) So we can close here?

gitea-mirror commented

2026-05-05 09:18:54 -06:00

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@netblue30 commented on GitHub (Dec 21, 2021):

Yes, closing.

@netblue30 commented on GitHub (Dec 21, 2021): Yes, closing.

gitea-mirror referenced this issue

2026-05-05 10:20:42 -06:00

[PR #2650] [MERGED] fixed electrum not resolving domains #4469

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Reference: github-starred/firejail#2650

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