# CVE-2025-8114: : null pointer dereference in libssh kex session id calculation

CVE-2025-8114 is fixed in 7 products on 1 platform, first by libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5, released July 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-8114
- Priority: Routine
- CVSS: 6.5 (Low)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 24, 2025
- Weakness: NULL Pointer Dereference
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-8114

## Description

A flaw was found in libssh, a library that implements the SSH protocol.When calculating the session ID during the key exchange (KEX) process, anallocation failure in cryptographic functions may lead to a NULL pointerdereference. This issue can cause the client or server to crash.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libssh Debian 12.15 (bookworm) | 0.10.6-0+deb12u2 | [DEBIAN-CVE-2025-8114](https://patchblox.com/security/data/fix/linux/debian-cve-2025-8114.md) | Jul 24, 2025 |
| Linux | libssh Debian 13.5 (trixie) | 0.11.2-1+deb13u1 | [DEBIAN-CVE-2025-8114](https://patchblox.com/security/data/fix/linux/debian-cve-2025-8114.md) | Jul 24, 2025 |
| Linux | libssh Debian 14 | 0.11.3-1 | [DEBIAN-CVE-2025-8114](https://patchblox.com/security/data/fix/linux/debian-cve-2025-8114.md) | Jul 24, 2025 |
| Linux | libssh RHEL 9 | 0:0.10.4-18.el9 | [RHSA-2026:18683](https://patchblox.com/security/data/fix/linux/rhsa-2026-18683.md) | May 27, 2026 |
| Linux | libssh almalinux 9 | 0.10.4-18.el9 | [ALSA-2026:18683](https://patchblox.com/security/data/fix/linux/alsa-2026-18683.md) | May 19, 2026 |
| Linux | libssh amzn 2023 | 0.10.6-1.amzn2023.0.3 | [ALAS2023-2025-1264](https://patchblox.com/security/data/fix/linux/alas2023-2025-1264.md) | Nov 10, 2025 |
| Linux | libssh ol 9 | 0:0.10.4-18.el9 | [ELSA-2026-18683](https://patchblox.com/security/data/fix/linux/elsa-2026-18683.md) | Jun 12, 2026 |
| Linux | libssh opensuse-leap 15.6 | 0.9.8-150600.11.6.1 | [SUSE-SU-2025:03369-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03369-1.md) | Sep 26, 2025 |
| Linux | libssh rocky 9 | 0:0.10.4-18.el9 | [RLSA-2026:18683](https://patchblox.com/security/data/fix/linux/rlsa-2026-18683.md) | May 28, 2026 |
| Linux | libssh sles 15.6 | 0.9.8-150600.11.6.1 | [SUSE-SU-2025:03369-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03369-1.md) | Sep 26, 2025 |
| Linux | libssh sles 15.7 | 0.9.8-150600.11.6.1 | [SUSE-SU-2025:03369-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03369-1.md) | Sep 26, 2025 |
| Linux | libssh-4 Ubuntu 18.04.6 LTS (bionic) | 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5 | [libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssh-4-0.8.0-20170825.94fa1e38-1ubuntu0.7-esm5.md) | Jul 24, 2025 |
| Linux | libssh-4 Ubuntu 20.04 LTS (focal) | 0.9.3-2ubuntu2.5+esm2 | [libssh-4 0.9.3-2ubuntu2.5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libssh-4-0.9.3-2ubuntu2.5-esm2.md) | Jul 24, 2025 |
| Linux | libssh-4 Ubuntu 22.04.1 LTS (jammy) | 0.9.6-2ubuntu0.22.04.5 | [libssh-4 0.9.6-2ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssh-4-0.9.6-2ubuntu0.22.04.5.md) | Jul 24, 2025 |
| Linux | libssh-4 Ubuntu 24.04.5 LTS (noble) | 0.10.6-2ubuntu0.2 | [libssh-4 0.10.6-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libssh-4-0.10.6-2ubuntu0.2.md) | Jul 24, 2025 |
| Linux | libssh-4 Ubuntu 25.04 (plucky) | 0.11.1-1ubuntu0.2 | [libssh-4 0.11.1-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssh-4-0.11.1-1ubuntu0.2.md) | Jan 16, 2026 |
| Linux | libssh-4 Ubuntu 25.10 (questing) | 0.11.2-1ubuntu0.1 | [libssh-4 0.11.2-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libssh-4-0.11.2-1ubuntu0.1.md) | Jul 24, 2025 |
| Linux | libssh-config RHEL 9 | 0:0.10.4-18.el9 | [RHSA-2026:18683](https://patchblox.com/security/data/fix/linux/rhsa-2026-18683.md) | May 27, 2026 |
| Linux | libssh-config almalinux 9 | 0.10.4-18.el9 | [ALSA-2026:18683](https://patchblox.com/security/data/fix/linux/alsa-2026-18683.md) | May 19, 2026 |
| Linux | libssh-config amzn 2023 | 0.10.6-1.amzn2023.0.3 | [ALAS2023-2025-1264](https://patchblox.com/security/data/fix/linux/alas2023-2025-1264.md) | Nov 10, 2025 |
| Linux | libssh-config ol 9 | 0:0.10.4-18.el9 | [ELSA-2026-18683](https://patchblox.com/security/data/fix/linux/elsa-2026-18683.md) | Jun 12, 2026 |
| Linux | libssh-debuginfo amzn 2023 | 0.10.6-1.amzn2023.0.3 | [ALAS2023-2025-1264](https://patchblox.com/security/data/fix/linux/alas2023-2025-1264.md) | Nov 10, 2025 |
| Linux | libssh-debugsource amzn 2023 | 0.10.6-1.amzn2023.0.3 | [ALAS2023-2025-1264](https://patchblox.com/security/data/fix/linux/alas2023-2025-1264.md) | Nov 10, 2025 |
| Linux | libssh-devel RHEL 9 | 0:0.10.4-18.el9 | [RHSA-2026:18683](https://patchblox.com/security/data/fix/linux/rhsa-2026-18683.md) | May 27, 2026 |
| Linux | libssh-devel almalinux 9 | 0.10.4-18.el9 | [ALSA-2026:18683](https://patchblox.com/security/data/fix/linux/alsa-2026-18683.md) | May 19, 2026 |
| Linux | libssh-devel amzn 2023 | 0.10.6-1.amzn2023.0.3 | [ALAS2023-2025-1264](https://patchblox.com/security/data/fix/linux/alas2023-2025-1264.md) | Nov 10, 2025 |
| Linux | libssh-devel ol 9 | 0:0.10.4-18.el9 | [ELSA-2026-18683](https://patchblox.com/security/data/fix/linux/elsa-2026-18683.md) | Jun 12, 2026 |
| Linux | libssh-gcrypt-4 Ubuntu 18.04.6 LTS (bionic) | 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5 | [libssh-gcrypt-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssh-gcrypt-4-0.8.0-20170825.94fa1e38-1ubuntu0.7-esm5.md) | Jul 24, 2025 |
| Linux | libssh-gcrypt-4 Ubuntu 20.04 LTS (focal) | 0.9.3-2ubuntu2.5+esm2 | [libssh-gcrypt-4 0.9.3-2ubuntu2.5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libssh-gcrypt-4-0.9.3-2ubuntu2.5-esm2.md) | Jul 24, 2025 |
| Linux | libssh-gcrypt-4 Ubuntu 22.04.1 LTS (jammy) | 0.9.6-2ubuntu0.22.04.5 | [libssh-gcrypt-4 0.9.6-2ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssh-gcrypt-4-0.9.6-2ubuntu0.22.04.5.md) | Jul 24, 2025 |
| Linux | libssh-gcrypt-4 Ubuntu 24.04.5 LTS (noble) | 0.10.6-2ubuntu0.2 | [libssh-gcrypt-4 0.10.6-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libssh-gcrypt-4-0.10.6-2ubuntu0.2.md) | Jul 24, 2025 |

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