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Fedora Update Notification
FEDORA-2026-232ffc1325
2026-10-22 16:40:54.382118+00:00
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Name : socat
Product : Fedora 43
Version : 1.8.1.3
Release : 1.fc43
URL : http://www.dest-unreach.org/socat/
Summary : Bidirectional data relay between two data channels
('netcat++')
Description :
Socat is a relay for bidirectional data transfer between two independent data
channels. Each of these data channels may be a file, pipe, device (serial line
etc. or a pseudo terminal), a socket (UNIX, IP4, IP6 - raw, UDP, TCP), an
SSL socket, proxy CONNECT connection, a file descriptor (stdin etc.), the GNU
line editor (readline), a program, or a combination of two of these.

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Update Information:

Update to 1.8.1.3 (rhbz#2492929)
Fix for CVE-2026-56123 (rhbz#2535043)
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ChangeLog:

* Wed Oct 7 2026 Martin Osvald <mosvald@redhat.com> - 1.8.1.3-1
- Update to 1.8.1.3 (rhbz#2492929)
- Fix for CVE-2026-56123 (rhbz#2535043)
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References:

[ 1 ] Bug #2492929 - socat-1.8.1.3 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2492929
[ 2 ] Bug #2535043 - CVE-2026-56123 socat: Socat: Heap-based buffer overflow
allows arbitrary code execution via malicious SOCKS5 proxy server [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2535043
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2026-232ffc1325' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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