Description
A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SSH servers.
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 | golang-go.crypto | 1:0.0~git20201221.eec23a3-1 | — |
| Debian 13 | golang-go.crypto | 1:0.0~git20201221.eec23a3-1 | — |
| Debian 12 | golang-go.crypto | 1:0.0~git20201221.eec23a3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | golang-go.crypto | 1:0.0~git20201221.eec23a3-1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | golang-go.crypto | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | buildah +1 | 1.19.7-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | cockpit-podman | 29-2.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | conmon | 2:2.0.26-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | container-selinux | 2:2.158.0-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | containernetworking-plugins | 0.9.1-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | crit +2 | 3.15-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | crun | 0.18-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | fuse-overlayfs | 1.4.0-2.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | libslirp +1 | 4.3.1-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | oci-seccomp-bpf-hook | 1.2.0-2.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | podman +5 | 3.0.1-6.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | runc | 1.0.0-70.rc92.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | skopeo +2 | 1:1.2.2-8.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | slirp4netns | 1.1.8-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | toolbox | 0.0.8-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
| RHEL 8 | udica | 0.2.4-1.module+el8.4.0+10607+f4da7515 | RHSA-2021:1796 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | cockpit-podman | 29-2.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | conmon | 2:2.0.26-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | containernetworking-plugins | 0.9.1-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | crit +2 | 3.15-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | fuse-overlayfs | 1.4.0-2.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | libslirp +1 | 4.3.1-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | slirp4netns | 1.1.8-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
| AlmaLinux 8 | udica | 0.2.4-1.module_el8.6.0+2876+9ed4eae2 | ALSA-2021:1796 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | buildah | 1.19.7-1.module+el8.4.0+558+7340b765 | RLSA-2021:1796 |
| Rocky Linux 8 | cockpit-podman | 29-2.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
| Rocky Linux 8 | conmon | 2:2.0.26-1.module+el8.4.0+558+7340b765 | RLSA-2021:1796 |
| Rocky Linux 8 | container-selinux | 2:2.158.0-1.module+el8.4.0+558+7340b765 | RLSA-2021:1796 |
| Rocky Linux 8 | containernetworking-plugins | 0.9.1-1.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
| Rocky Linux 8 | criu | 3.15-1.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
| Rocky Linux 8 | fuse-overlayfs | 1.4.0-2.module+el8.4.0+558+7340b765 | RLSA-2021:1796 |
| Rocky Linux 8 | libslirp | 4.3.1-1.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
| Rocky Linux 8 | oci-seccomp-bpf-hook | 1.2.0-2.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
| Rocky Linux 8 | podman | 3.0.1-6.module+el8.4.0+558+7340b765 | RLSA-2021:1796 |
| Rocky Linux 8 | skopeo | 1:1.2.2-8.module+el8.5.0+661+c0df01f6 | RLSA-2021:1796 |
| Rocky Linux 8 | slirp4netns | 1.1.8-1.module+el8.4.0+537+38cf4e42 | RLSA-2021:1796 |
| Rocky Linux 8 | toolbox | 0.0.8-1.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
| Rocky Linux 8 | udica | 0.2.4-1.module+el8.4.0+556+40122d08 | RLSA-2021:1796 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | velero | 1.7.1-1.1 | openSUSE-SU-2024:11667-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | golang +7 | 1.18.3-1.amzn2 | ALAS2-2022-1830 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | buildah +1 | 1.19.7-1.0.1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | cockpit-podman | 29-2.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | conmon | 2:2.0.26-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | container-selinux | 2:2.158.0-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | containernetworking-plugins | 0.9.1-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | crit +2 | 3.15-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | crun | 0.18-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | fuse-overlayfs | 1.4.0-2.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | libslirp +1 | 4.3.1-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | oci-seccomp-bpf-hook | 1.2.0-2.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | podman +5 | 3.0.1-6.0.1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | runc | 1.0.0-70.rc92.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | skopeo +2 | 1:1.2.2-8.0.1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | slirp4netns | 1.1.8-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
| Oracle Linux 8 | udica | 0.2.4-1.module+el8.4.0+20157+b6591bfb | ELSA-2021-1796 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | k3d +2 | 5.6.0-r11 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | golang.org/x/crypto | < 0.0.0-20201216223049-8b5274cf687f | 0.0.0-20201216223049-8b5274cf687f | GHSA-3vm4-22fp-5rfm |
Advisories 8
- ALSA-2021:1796 Moderate: container-tools:rhel8 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:1796 Red Hat Security Advisory: container-tools:rhel8 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- WID-SEC-2022-0510 IBM DB2: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2026
- RLSA-2021:1796 Moderate: container-tools:rhel8 security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:11667-1 velero-1.7.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-2229 Splunk Splunk Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- ALAS2-2022-1830 Important: golang security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 23, 2025
- ELSA-2021-1796 Moderate: container-tools:ol8 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 25, 2021