Devuan bug report logs - #497
libc6: Permission denied, intermittent in execve

Package: libc6; Reported by: Alessandro Vesely <[email protected]>; Keywords: debian; merged with #498; Forwarded to https://bugs.debian.org/966343; Maintainer for libc6 is (unknown).

Marked as found in versions 2.28-10. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Set bug forwarded-to-address to 'https://bugs.debian.org/966343'. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Added tag(s) debian. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Merged 497 498 Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Message received at [email protected]:

To: [email protected]
From: Alessandro Vesely <[email protected]>
Subject: Please discard 497, keep 498
Message-ID: <[email protected]>
Date: Mon, 27 Jul 2020 10:51:47 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.10.0
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I should've sent 498 as a reply to 497, sorry.

Yet 498 has the link unbroken...

Acknowledgement sent to Alessandro Vesely <[email protected]>:
Extra info received and forwarded to list. Copy sent to [email protected]. Full text available.

Information forwarded to [email protected], [email protected]:
bug#497; Package libc6. Full text available.

Message received at [email protected]:

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From: Alessandro Vesely <[email protected]>
To: Devuan Bug Tracking System <[email protected]>
Subject: libc6: Permission denied, intermittent in execve
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Package: libc6
Version: GNU C Library (Debian GLIBC 2.28-10) stable release version 2.28.
Severity: normal

Dear Maintainer,

in certain situations, execve fails setting errno to EACCESS.  The same
program, launched by the same user in different ways, succeeds or fails
according to preceding actions.

None of the failure conditions for EACCESS is met.

The case at hand happens with an old version of Thunderbird and a LibreOffice
attachment.  After saving the attachment, Thunderbird execs gio-launch-desktop.
The latter tries to exec libreoffice6.4 and fails.

I strace'd the full arguments used in the failed execve(), and copied them to a
simple C program which runs just that execve() call.  When called from the
command line, the program succeeds.  Then I replaced the gio-launch-desktop
executable with my straw men.  When called from Thunderbird, the program fails.

See also:
https://unix.stackexchange.com/questions/600174/permission-denied-intermittent-
in-execve


-- System Information:
Distributor ID: Debian
Description:    Devuan GNU/Linux 3 (beowulf)
Release:        3
Codename:       beowulf
Architecture: x86_64

Kernel: Linux 4.19.0-9-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8),
LANGUAGE=en_IE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Acknowledgement sent to Alessandro Vesely <[email protected]>:
New bug report received and forwarded. Copy sent to [email protected].

Your message had a Version: pseudo-header with an invalid package version:

GNU C Library (Debian GLIBC 2.28-10) stable release version 2.28.

please either use found or fixed to the control server with a correct version, or reply to this report indicating the correct version so the maintainer (or someone else) can correct it for you.

Full text available.

Report forwarded to [email protected], [email protected]:
bug#497; Package libc6. Full text available.

Devuan bug report logs - #497 libc6: Permission denied, intermittent in execve

Message received at [email protected]:

Message received at [email protected]:

Devuan bug report logs - #497
libc6: Permission denied, intermittent in execve