This bug appeared after an upgrade from veersion 8.22.0-1.

#!/bin/bash
set -e
curl -s "http://tinyurl.com/api-create.php?url=$1"
echo ""

I have the above shell script to get a tinyurl which has been working for many
years.

URL2=$(tinyurl $1)
read PRIM

The above shell script fails with the following error on the latest version:

script-name: line 26: read: 0: read error: Resource temporarily unavailable

When I changed the tinyurl script to the following (redirectint input from
/dev/null) it started working again.  It seems that curl messes with the
terminal settings and makes the bash script fail.

#!/bin/bash
set -e
curl -s "http://tinyurl.com/api-create.php?url=$1" < /dev/null
echo ""

The expected behaviour is that it will either not change the settings or it
will change them back after doing whatever it wants to do.

This is an upstream bug. There's an upstream report at
https://github.com/curl/curl/issues/23127 . It was introduced by
https://github.com/curl/curl/pull/23081 , and fixed in
https://github.com/curl/curl/pull/23144 by reverting the change.

Please consider updating to a version containing that upstream change
(or backporting the patch).

Hi Russel and Josh,
[...]

Ack.

Thanks for the pointers, Josh!

Tomorrow 8.23.0~rc3 will be released accordingly to my calendar so we
will upload to unstable by the weekend and soon after it will hit
testing fixing things.

Cheers,
Charles

We believe that the bug you reported is fixed in the latest version of
curl, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1149508@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Carlos Henrique Lima Melara <charlesmelara@riseup.net> (supplier of updated curl package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Wed, 07 Oct 2026 21:43:25 -0300
Source: curl
Architecture: source
Version: 8.23.0~rc3-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Curl Maintainers <team+curl@tracker.debian.org>
Changed-By: Carlos Henrique Lima Melara <charlesmelara@riseup.net>
Closes: 1149508
Changes:
 curl (8.23.0~rc3-1) unstable; urgency=medium
 .
   * New upstream version 8.23.0~rc3. (Closes: #1149508)
   * debian/patches: rebase patches.
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