Description
readline.sh in socat before1.8.0.2 relies on the /tmp/$USER/stderr2 file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| dest-unreach | socat | 1.6.0.0 – < 1.8.0.2, 2.0.0-b1 – ≤ 2.0.0-b9 | 1.8.0.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | socat | 1.8.0.2-1 | — |
| Debian 13 | socat | 1.8.0.2-1 | — |
| Debian 12 | socat | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | socat | 1.8.1.1-1ubuntu0.1 | USN-8511-1 |
| Ubuntu 24.04 LTS | socat | 1.8.0.0-4ubuntu0.1 | USN-8511-1 |
| Ubuntu 22.04 LTS | socat | No fix yet | — |
| Ubuntu 20.04 LTS | socat | No fix yet | — |
| Ubuntu 18.04 LTS | socat | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | socat | No fix yet | — |
| Ubuntu Pro 14.04 LTS | socat | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | socat | 1.7.4.1-6.el9_6.1 | RHSA-2025:10353 |
| RHEL 8 | socat | 1.7.4.1-2.el8_10 | RHSA-2025:11042 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.4 EUS | socat | 1.7.4.1-5.el9_4.3 | RHSA-2025:10646 |
| RHEL 9.2 E4S | socat | 1.7.4.1-5.el9_2.2 | RHSA-2025:10544 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | socat | 1.7.4.1-6.el9_6.1 | ALSA-2025:10353 |
| AlmaLinux 8 | socat | 1.7.4.1-2.el8_10 | ALSA-2025:11042 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | socat | 1.7.4.1-6.el9_6.1 | RLSA-2025:10353 |
| Rocky Linux 8 | socat | 1.7.4.1-2.el8_10 | RLSA-2025:11042 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | socat | 1.8.0.0-150600.20.6.1 | SUSE-SU-2024:4295-1 |
| SLES 15 SP5 | socat | 1.8.0.0-150400.14.6.1 | SUSE-SU-2024:4302-1 |
| SLES 12 SP5 | socat | 1.7.2.4-4.3.1 | SUSE-SU-2024:4294-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.5 | socat | 1.8.0.0-150400.14.6.1 | SUSE-SU-2024:4302-1 |
| SLE Micro 5.4 | socat | 1.8.0.0-150400.14.6.1 | SUSE-SU-2024:4302-1 |
| SLE Micro 5.3 | socat | 1.8.0.0-150400.14.6.1 | SUSE-SU-2024:4302-1 |
| SLE Micro 5.2 | socat | 1.7.3.2-150000.6.3.1 | SUSE-SU-2024:4348-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | socat | 1.8.0.2-1.1 | openSUSE-SU-2024:14582-1 |
| openSUSE Leap 15.6 | socat | 1.8.0.0-150600.20.6.1 | SUSE-SU-2024:4295-1 |
| openSUSE Leap 15.5 | socat | 1.8.0.0-150400.14.6.1 | SUSE-SU-2024:4302-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | socat | 1.8.0.0-150400.14.6.1 | SUSE-SU-2024:4302-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | socat | 1.7.4.2-1.amzn2023.0.3 | ALAS2023-2026-1701 |
| Amazon Linux 2 | socat | 1.7.3.2-2.amzn2.0.2 | ALAS2-2026-3303 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | socat | 1.7.4.4-2 | — |
| Azure Linux 2 (CBL-Mariner) | socat | 1.7.4.3-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | socat | 1.7.4.1-6.el9_6.1 | ELSA-2025-10353 |
| Oracle Linux 8 | socat | 1.7.4.1-2.el8_10 | ELSA-2025-11042 |
Advisories 20
- ALSA-2025:10353 Moderate: socat security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:11042 Moderate: socat security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2025-1466 Red Hat Enterprise Linux (socat): Schwachstelle ermöglicht Manipulation von Dateien BSI CERT-Bund (WID) · Jul 6, 2026
- USN-8511-1 socat vulnerabilities Ubuntu Security Notices (USN) · Jul 6, 2026
- RHSA-2025:11042 Red Hat Security Advisory: socat security update Red Hat Security Advisories (RHSA) · Jun 3, 2026
- RHSA-2025:10646 Red Hat Security Advisory: socat security update Red Hat Security Advisories (RHSA) · Jun 3, 2026
- RHSA-2025:10544 Red Hat Security Advisory: socat security update Red Hat Security Advisories (RHSA) · Jun 3, 2026
- RHSA-2025:10353 Red Hat Security Advisory: socat security update Red Hat Security Advisories (RHSA) · Jun 3, 2026
- ALAS2-2026-3303 Low: socat security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 26, 2026
- ALAS2023-2026-1701 Low: socat security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 15, 2026
- WID-SEC-2025-1905 IBM QRadar SIEM Komponente: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 4, 2026
- SUSE-SU-2024:4294-1 Security update for socat SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14582-1 socat-1.8.0.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4295-1 Security update for socat SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4348-1 Security update for socat SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4302-1 Security update for socat SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2025:10353 Moderate: socat security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:11042 Moderate: socat security update Rocky Linux Security Advisories · Jul 29, 2025
- ELSA-2025-11042 Moderate: socat security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 14, 2025
- ELSA-2025-10353 Moderate: socat security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 7, 2025