CVE-2025-5987
Fixed in a distro release EPSS 2%CVSS 8.1
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18, Red Hat OpenShift Container Platform 4.19, Red Hat OpenShift Container Platform 4.20, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | libssh-config | 0.11.1-5.el10_1 |
| AlmaLinux 9 | libssh | 0.10.4-17.el9_7 |
| AlmaLinux 9 | libssh-config | 0.10.4-17.el9_7 |
| AlmaLinux 9 | libssh-devel | 0.10.4-17.el9_7 |
| Amazon Linux 2023 | libssh | 0.10.6-1.amzn2023.0.2 |
| Amazon Linux 2023 | libssh-config | 0.10.6-1.amzn2023.0.2 |
| Amazon Linux 2023 | libssh-devel | 0.10.6-1.amzn2023.0.2 |
| Chainguard | libssh | 0.11.3-r0 |
| Chainguard | libssh2 | 1.11.1-r1 |
| Debian 12 | libssh | 0.10.6-0+deb12u2 |
| Debian 13 | libssh | 0.11.2-1 |
| Debian 14 | libssh | 0.11.2-1 |
| Red Hat Enterprise Linux 10.1 | libssh | 0:0.11.1-5.el10_1 |
| Red Hat Enterprise Linux 10.1 | libssh-config | 0:0.11.1-5.el10_1 |
| Red Hat Enterprise Linux 10.1 | libssh-debuginfo | 0:0.11.1-5.el10_1 |
| Red Hat Enterprise Linux 10.1 | libssh-debugsource | 0:0.11.1-5.el10_1 |
| Red Hat Enterprise Linux 10.1 | libssh-devel | 0:0.11.1-5.el10_1 |
| Red Hat Enterprise Linux 9 | libssh | 0:0.10.4-17.el9_7 |
| Red Hat Enterprise Linux 9 | libssh-config | 0:0.10.4-17.el9_7 |
| Red Hat Enterprise Linux 9 | libssh-debuginfo | 0:0.10.4-17.el9_7 |
| Red Hat Enterprise Linux 9 | libssh-debugsource | 0:0.10.4-17.el9_7 |
| Red Hat Enterprise Linux 9 | libssh-devel | 0:0.10.4-17.el9_7 |
| Red Hat Enterprise Linux eus 10.0 | libssh | 0:0.11.1-4.el10_0.1 |
| Red Hat rhel e4s 9.2 | libssh | 0:0.10.4-9.el9_2.2 |
| Red Hat rhel eus 9.4 | libssh | 0:0.10.4-13.el9_4.2 |
| Red Hat rhel eus 9.6 | libssh | 0:0.10.4-15.el9_6.1 |
| Rocky Linux 10 | libssh | 0:0.11.1-5.el10_1 |
| Rocky Linux 9 | libssh | 0:0.10.4-17.el9_7 |
| SUSE Linux Micro 6.0 | libssh | 0.10.6-2.1 |
| SUSE Linux Micro 6.1 | libssh | 0.10.6-slfo.1.1_2.1 |
| Ubuntu 22.04 LTS | libssh | 0.9.6-2ubuntu0.22.04.4 |
| Ubuntu 24.04 LTS | libssh | 0.10.6-2ubuntu0.1 |
| Wolfi | libssh | 0.11.3-r0 |
| Wolfi | libssh2 | 1.11.1-r1 |
| openSUSE Tumbleweed | libssh | 0.11.2-1.1 |