Resource exhaustion in Go programming language - CVE-2026-32280

 

Resource exhaustion in Go programming language - CVE-2026-32280

Published: July 31, 2026


Vulnerability identifier: #VU140599
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-32280
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in the Certificate.Verify chain-building logic in crypto/x509 when processing a large number of intermediate certificates supplied through VerifyOptions.Intermediates. A remote attacker can provide a large number of intermediate certificates to cause a denial of service.

This affects both direct users of crypto/x509 and users of crypto/tls.


Affected software

Go programming language
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Anolis OS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Development Tools Module
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
collectd-sensubility (Red Hat package)
rhc (Red Hat package)
rhc-worker-playbook (Red Hat package)
yggdrasil (Red Hat package)
gvisor-tap-vsock (Red Hat package)
openstack-selinux (Red Hat package)
golang-github-openprinting-ipp-usb (Red Hat package)
butane (Red Hat package)
opentelemetry-collector (Red Hat package)
ansible-collection-ansible-posix (Red Hat package)
runc (Red Hat package)
containernetworking-plugins (Red Hat package)
python-cinder-tests-tempest (Red Hat package)
ansible-collections-openstack (Red Hat package)
skopeo (Red Hat package)
python-ovsdbapp (Red Hat package)
skopeo
skopeo-tests
skopeo-doc
cri-tools (Red Hat package)
delve
delve (Red Hat package)
cri-o (Red Hat package)
golang (Red Hat package)
golang-docs
golang-misc
golang-race
golang-bin
golang
go-toolset
golang-src
golang-tests
go1.25-openssl-race
go1.25-openssl-debuginfo
go1.25-openssl
go1.25-openssl-doc
go1.25
go1.25-race
go1.25-doc
go1.26-openssl-race
go1.26-openssl
go1.26-openssl-doc
go1.26-race
go1.26-doc
go1.26
buildah (Red Hat package)
conmon (Red Hat package)
python-glance-store (Red Hat package)
ignition (Red Hat package)
openstack-swift (Red Hat package)
tripleo-ansible (Red Hat package)
git-lfs (Red Hat package)
git-lfs-doc
git-lfs
etcd (Red Hat package)
kata-containers (Red Hat package)
python-oslo-serialization (Red Hat package)
python-os-brick (Red Hat package)
podman (Red Hat package)
openshift (Red Hat package)
openshift-clients (Red Hat package)
ose-aws-ecr-image-credential-provider (Red Hat package)
ose-azure-acr-image-credential-provider (Red Hat package)
ose-gcp-gcr-image-credential-provider (Red Hat package)
grafana-pcp (Red Hat package)
grafana-pcp
kernel (Red Hat package)
kernel-rt (Red Hat package)
openstack-ironic-python-agent (Red Hat package)
grafana (Red Hat package)
grafana
grafana-selinux
puppet-rabbitmq (Red Hat package)
python-oslo-messaging (Red Hat package)
os-net-config (Red Hat package)
puppet-tripleo (Red Hat package)
openstack-tripleo-heat-templates (Red Hat package)
openstack-heat (Red Hat package)
openstack-ironic (Red Hat package)
rhosp-director-images-minimal (Red Hat package)
rhosp-director-images-ipa-x86_64 (Red Hat package)
rhosp-director-images-ipa-fips-x86_64 (Red Hat package)
rhosp-director-images-fips-x86_64 (Red Hat package)
rhosp-director-images (Red Hat package)
rhosp-director-images-minimal-fips (Red Hat package)
rhosp-director-images-multirhel-x86_64 (Red Hat package)
rhosp-director-images-uefi-fips-x86_64 (Red Hat package)
rhosp-director-images-uefi-x86_64 (Red Hat package)
rhosp-director-images-x86_64 (Red Hat package)
octavia-amphora-image-fips-x86_64 (Red Hat package)
octavia-amphora-image-x86_64 (Red Hat package)
openstack-cinder (Red Hat package)
openstack-neutron (Red Hat package)
openstack-keystone (Red Hat package)
python-django-horizon (Red Hat package)
openstack-nova (Red Hat package)
erlang (Red Hat package)
osbuild-composer (Red Hat package)
osbuild-composer
osbuild-composer-core
osbuild-composer-worker
IBM Business Automation Workflow
OpenShift Logging
Red Hat OpenStack
Multicluster Engine for Kubernetes
Red Hat OpenShift Container Platform
DataStage on Cloud Pak for Data

How to mitigate CVE-2026-32280

Install security update from vendor's website.

Go programming language - addressed in versions 1.25.9, 1.26.2
IBM Business Automation Workflow - addressed in versions 24.0.0-IF009, 24.0.1-IF008, 25.0.0-IF005, 26.0.0.0
collectd-sensubility (Red Hat package) - update to 0.2.1-6.el9ost
rhc (Red Hat package) - addressed in versions 0.2.2-1.el9_2.3, 0.2.4-8.el9_4, 0.2.5-7.el8_10, 0.2.7-1.el9_6.4, 0.2.7-7.el9_8, 0.3.2-4.el10_0, 0.3.8-5.el10_2
rhc-worker-playbook (Red Hat package) - update to 0.2.3-5.el10_0
yggdrasil (Red Hat package) - update to 0.4.9-5.el10_2
gvisor-tap-vsock (Red Hat package) - update to 0.8.5-2.el10_0.1
openstack-selinux (Red Hat package) - update to 0.8.37-17.1.20260107141051.05dd1b2.el9ost
golang-github-openprinting-ipp-usb (Red Hat package) - update to 0.9.27-3.el10_0.4
butane (Red Hat package) - addressed in versions 0.19.0-5.rhaos4.14.el8, 0.20.0-6.rhaos4.15.el8, 0.21.0-6.rhaos4.16.el8, 0.23.0-5.rhaos4.18.el8, 0.24.0-5.rhaos4.19.el8
opentelemetry-collector (Red Hat package) - addressed in versions 0.144.0-2.el9_4, 0.144.0-2.el9_6, 0.144.0-2.el10_0
ansible-collection-ansible-posix (Red Hat package) - update to 1.2.0-1.4.el9ost
runc (Red Hat package) - addressed in versions 1.2.5-6.rhaos4.19.el9, 1.2.9-1.el9_4.2, 1.2.9-3.el9_6.1, 1.2.9-5.rhaos4.16.el8, 1.2.9-5.rhaos4.16.el9, 1.2.9-7.rhaos4.18.el8, 1.2.9-7.rhaos4.18.el9, 1.4.2-2.el9_8
containernetworking-plugins (Red Hat package) - addressed in versions 1.4.0-6.rhaos4.14.el8, 1.4.0-6.rhaos4.15.el8, 1.4.0-7.rhaos4.12.el8, 1.4.0-7.rhaos4.14.el8, 1.4.0-7.rhaos4.15.el8, 1.4.0-10.rhaos4.16.el8, 1.4.0-10.rhaos4.18.el8
python-cinder-tests-tempest (Red Hat package) - update to 1.8.0-17.1.20260114160833.0e94611.el9ost
ansible-collections-openstack (Red Hat package) - update to 1.9.1-17.1.20260318160829.0e9a6f2.el9ost
skopeo (Red Hat package) - addressed in versions 1.9.4-9.rhaos4.12.el8, 1.9.4-10.rhaos4.12.el9, 1.11.3-7.rhaos4.14.el8, 1.11.3-7.rhaos4.14.el9, 1.11.3-8.rhaos4.14.el8, 1.11.3-8.rhaos4.14.el9, 1.11.3-8.rhaos4.15.el8, 1.11.3-9.rhaos4.15.el8, 1.11.3-9.rhaos4.15.el9, 1.11.3-10.rhaos4.15.el9, 1.14.5-8.rhaos4.16.el8, 1.14.5-8.rhaos4.16.el9, 1.14.6-1.el9_4, 1.16.1-6.rhaos4.18.el8, 1.16.1-7.rhaos4.18.el9, 1.18.1-6.rhaos4.19.el9, 1.22.2-2.el10_2, 1.22.2-6.el9_8
python-ovsdbapp (Red Hat package) - update to 1.9.4-17.1.20260304101059.65d02f0.el9ost
skopeo - update to 1.18.2-1
skopeo-tests - update to 1.18.2-1
skopeo-doc - update to 1.18.2-1
cri-tools (Red Hat package) - addressed in versions 1.25.0-6.el9, 1.25.0-7.el8, 1.27.0-8.el8, 1.27.0-8.el9, 1.28.0-9.el8, 1.28.0-9.el9, 1.29.0-8.el8, 1.29.0-8.el9, 1.31.1-7.el8, 1.31.1-7.el9, 1.32.0-5.el9
delve - update to 1.25.2-1.0.2
delve (Red Hat package) - addressed in versions 1.25.2-4.el10_0, 1.26.1-2.el10_2
cri-o (Red Hat package) - addressed in versions 1.25.5-34.rhaos4.12.git6120b13.el8, 1.27.8-19.rhaos4.14.gitcea2db1.el8, 1.27.8-19.rhaos4.14.gitcea2db1.el9, 1.28.11-14.rhaos4.15.gitf722b2f.el8, 1.28.11-14.rhaos4.15.gitf722b2f.el9, 1.29.13-12.rhaos4.16.git979a5e6.el8, 1.29.13-12.rhaos4.16.git979a5e6.el9, 1.31.13-11.rhaos4.18.git817a650.el9, 1.31.13-12.rhaos4.18.git249255c.el8, 1.32.13-7.rhaos4.19.git5f9368a.el9
golang (Red Hat package) - addressed in versions 1.25.9-1.el9_2, 1.25.9-1.el9_6, 1.25.9-1.el10_0, 1.25.9-3.el10_1
golang-docs - update to 1.25.9-1.0.1
golang-misc - update to 1.25.9-1.0.1
golang-race - update to 1.25.9-1.0.1
golang-bin - update to 1.25.9-1.0.1
golang - update to 1.25.9-1.0.1
go-toolset - update to 1.25.9-1.0.1
golang-src - update to 1.25.9-1.0.1
golang-tests - update to 1.25.9-1.0.1
go1.25-openssl-race - update to 1.25.9-150000.1.21.1
go1.25-openssl-debuginfo - update to 1.25.9-150000.1.21.1
go1.25-openssl - update to 1.25.9-150000.1.21.1
go1.25-openssl-doc - update to 1.25.9-150000.1.21.1
go1.25 - update to 1.25.9-150000.1.35.1
go1.25-race - update to 1.25.9-150000.1.35.1
go1.25-doc - update to 1.25.9-150000.1.35.1
go1.26-openssl-race - update to 1.26.2-150000.1.6.1
go1.26-openssl - update to 1.26.2-150000.1.6.1
go1.26-openssl-doc - update to 1.26.2-150000.1.6.1
go1.26-race - update to 1.26.2-150000.1.9.1
go1.26-doc - update to 1.26.2-150000.1.9.1
go1.26 - update to 1.26.2-150000.1.9.1
buildah (Red Hat package) - addressed in versions 1.33.12-5.rhaos4.19.el9, 1.33.15-1.el9_4.1, 1.43.1-2.el10_2
conmon (Red Hat package) - update to 2.1.12-12.rhaos4.19.el9
python-glance-store (Red Hat package) - update to 2.5.1-17.1.20260225150839.5f1cee6.el9ost
Multicluster Engine for Kubernetes - update to 2.6.12
ignition (Red Hat package) - addressed in versions 2.18.0-8.rhaos4.16.el9, 2.18.0-11.rhaos4.18.el9
openstack-swift (Red Hat package) - update to 2.27.1-17.1.20260806131309.16dbcae.el9ost
tripleo-ansible (Red Hat package) - update to 3.3.1-17.1.20260603190918.8debef3.el9ost
git-lfs (Red Hat package) - addressed in versions 3.4.1-10.el8_10, 3.6.1-2.el9_6.4, 3.6.1-2.el10_0.4, 3.6.1-8.el9_7.1
git-lfs-doc - addressed in versions 3.4.1-10.0.1, 3.7.1-4
git-lfs - addressed in versions 3.4.1-10.0.1, 3.7.1-4
etcd (Red Hat package) - addressed in versions 3.4.26-9.5.el9ost, 3.4.26-9.6.el9ost
kata-containers (Red Hat package) - addressed in versions 3.25.0-6.rhaos4.18.el9, 3.25.0-7.rhaos4.19.el9
python-oslo-serialization (Red Hat package) - update to 4.1.1-17.1.20260326121047.bbe5d5a.el9ost
python-os-brick (Red Hat package) - update to 4.3.4-17.1.20260324150947.cf69f92.el9ost
podman (Red Hat package) - addressed in versions 4.4.1-25.rhaos4.14.el8, 4.4.1-25.rhaos4.14.el9, 4.4.1-39.rhaos4.15.el8, 4.9.4-20.el9_4.3, 5.4.0-20.el9_6.3, 5.8.2-3.el9_8, 5.8.2-3.el10_2
openshift (Red Hat package) - addressed in versions 4.12.0-202608131627.p2.g0e18cfc.assembly.stream.el8, 4.12.0-202608131627.p2.g0e18cfc.assembly.stream.el9, 4.14.0-202608131802.p2.g288be6b.assembly.stream.el8, 4.14.0-202608131802.p2.g288be6b.assembly.stream.el9, 4.15.0-202608131733.p2.g5cb2ef4.assembly.stream.el8, 4.15.0-202608131733.p2.g5cb2ef4.assembly.stream.el9, 4.16.0-202608111505.p2.g41c4e9b.assembly.stream.el8, 4.16.0-202608111505.p2.g41c4e9b.assembly.stream.el9, 4.18.0-202608132034.p2.g91c2408.assembly.stream.el8, 4.18.0-202608132034.p2.g91c2408.assembly.stream.el9, 4.19.0-202605281656.p2.ga674efa.assembly.stream.el9
openshift-clients (Red Hat package) - addressed in versions 4.12.0-202608131627.p2.gd691257.assembly.stream.el8, 4.12.0-202608131627.p2.gd691257.assembly.stream.el9, 4.14.0-202608131802.p2.g44b3ac2.assembly.stream.el8, 4.14.0-202608131802.p2.g44b3ac2.assembly.stream.el9, 4.15.0-202608131733.p2.g8231637.assembly.stream.el8, 4.15.0-202608131733.p2.g8231637.assembly.stream.el9, 4.16.0-202608111505.p2.g6f88b58.assembly.stream.el8, 4.16.0-202608111505.p2.g6f88b58.assembly.stream.el9, 4.18.0-202608132034.p2.g6febe61.assembly.stream.el8, 4.18.0-202608132034.p2.g6febe61.assembly.stream.el9, 4.19.0-202605281656.p2.gb2a93a6.assembly.stream.el8, 4.19.0-202605281656.p2.gb2a93a6.assembly.stream.el9
Red Hat OpenShift Container Platform - addressed in versions 4.12.97, 4.14.68, 4.14.72, 4.15.66, 4.15.68, 4.16.69, 4.18.44, 4.18.54, 4.19.33
ose-aws-ecr-image-credential-provider (Red Hat package) - addressed in versions 4.14.0-202606041348.p2.g9a7820e.assembly.stream.el8, 4.14.0-202606041348.p2.g9a7820e.assembly.stream.el9, 4.14.0-202608131802.p2.g9a7820e.assembly.stream.el8, 4.14.0-202608131802.p2.g9a7820e.assembly.stream.el9, 4.15.0-202606040938.p2.gfd77d92.assembly.stream.el8, 4.15.0-202606040938.p2.gfd77d92.assembly.stream.el9, 4.15.0-202608131733.p2.gfd77d92.assembly.stream.el8, 4.15.0-202608131733.p2.gfd77d92.assembly.stream.el9, 4.16.0-202608111505.p2.ga53e9de.assembly.stream.el8, 4.16.0-202608111505.p2.ga53e9de.assembly.stream.el9, 4.18.0-202606021914.p2.gc395190.assembly.stream.el8, 4.18.0-202606021914.p2.gc395190.assembly.stream.el9, 4.18.0-202608121933.p2.gc395190.assembly.stream.el8, 4.18.0-202608121933.p2.gc395190.assembly.stream.el9, 4.19.0-202605281656.p2.g425c1c5.assembly.stream.el9
ose-azure-acr-image-credential-provider (Red Hat package) - addressed in versions 4.15.0-202606040938.p2.g0d799a2.assembly.stream.el8, 4.15.0-202606040938.p2.g0d799a2.assembly.stream.el9, 4.15.0-202608131733.p2.g5638728.assembly.stream.el8, 4.15.0-202608131733.p2.g5638728.assembly.stream.el9, 4.16.0-202608111505.p2.ga3ebdc0.assembly.stream.el8, 4.16.0-202608111505.p2.ga3ebdc0.assembly.stream.el9, 4.18.0-202606021914.p2.g9c24d76.assembly.stream.el8, 4.18.0-202606021914.p2.g9c24d76.assembly.stream.el9, 4.18.0-202608121933.p2.g9795abd.assembly.stream.el8, 4.18.0-202608121933.p2.g9795abd.assembly.stream.el9, 4.19.0-202605281656.p2.g7109d6b.assembly.stream.el9
ose-gcp-gcr-image-credential-provider (Red Hat package) - addressed in versions 4.15.0-202606040938.p2.gfc50272.assembly.stream.el8, 4.15.0-202606040938.p2.gfc50272.assembly.stream.el9, 4.15.0-202608131733.p2.gfc50272.assembly.stream.el8, 4.15.0-202608131733.p2.gfc50272.assembly.stream.el9, 4.16.0-202608111505.p2.g26b43df.assembly.stream.el8, 4.16.0-202608111505.p2.g26b43df.assembly.stream.el9, 4.18.0-202606021914.p2.g6ea2356.assembly.stream.el8, 4.18.0-202606021914.p2.g6ea2356.assembly.stream.el9, 4.18.0-202608121933.p2.g6ea2356.assembly.stream.el8, 4.18.0-202608121933.p2.g6ea2356.assembly.stream.el9, 4.19.0-202605281656.p2.gd8d3aeb.assembly.stream.el9
grafana-pcp (Red Hat package) - addressed in versions 5.1.1-5.el9_2.1, 5.1.1-14.el8_10, 5.1.1-14.el9_6, 5.2.2-6.el10_0
grafana-pcp - update to 5.1.1-14
DataStage on Cloud Pak for Data - addressed in versions 5.3.1 patch 11, 5.4
kernel (Red Hat package) - addressed in versions 5.14.0-284.188.1.el9_2, 5.14.0-570.118.1.el9_6
kernel-rt (Red Hat package) - update to 5.14.0-284.188.1.rt14.473.el9_2
OpenShift Logging - update to 6.0.15
openstack-ironic-python-agent (Red Hat package) - update to 7.1.1-17.1.20260803104219.0211fa9.el9ost
grafana (Red Hat package) - addressed in versions 9.0.9-12.el9_2, 9.2.10-27.el9_4, 9.2.10-30.el8_10, 10.2.6-24.el10_0
grafana - update to 9.2.10-30.0.1
grafana-selinux - update to 9.2.10-30.0.1
puppet-rabbitmq (Red Hat package) - update to 11.0.1-17.1.20260306080955.63fee2c.el9ost
python-oslo-messaging (Red Hat package) - update to 12.7.3-17.1.20260701150916.5d6fd1a.el9ost
os-net-config (Red Hat package) - update to 14.2.1-17.1.20260803103231.61d7bd7.el9ost
puppet-tripleo (Red Hat package) - update to 14.2.3-17.1.20260206090839.40278e1.el9ost
openstack-tripleo-heat-templates (Red Hat package) - update to 14.3.1-17.1.20260803105013.e7c7ce3.el9ost
openstack-heat (Red Hat package) - update to 16.1.1-17.1.20260713101101.edc6d60.el9ost
Red Hat OpenStack - update to 17.1
openstack-ironic (Red Hat package) - update to 17.1.1-17.1.20260721220909.c31db88.el9ost
rhosp-director-images-minimal (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-ipa-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-ipa-fips-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-fips-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-minimal-fips (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-multirhel-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-uefi-fips-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-uefi-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
rhosp-director-images-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
octavia-amphora-image-fips-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
octavia-amphora-image-x86_64 (Red Hat package) - update to 17.1-20260901.1.el9ost
openstack-cinder (Red Hat package) - update to 18.2.2-17.1.20260702111621.f6b44fc.el9ost
openstack-neutron (Red Hat package) - update to 18.6.1-17.1.20260810120959.85ff760.el9ost
openstack-keystone (Red Hat package) - update to 19.0.2-17.1.20260630150819.54dd95d.el9ost
python-django-horizon (Red Hat package) - update to 19.4.1-17.1.20260630130603.9b1a13e.el9ost
openstack-nova (Red Hat package) - update to 23.2.3-17.1.20260810140853.2ace99d.el9ost
erlang (Red Hat package) - update to 24.3.4.2-7.el9ost
osbuild-composer (Red Hat package) - addressed in versions 76.1-6.el9_2, 101.5-1.el8_10, 134.1-7.el10_0, 165.1-4.el9_8
osbuild-composer - update to 165.1-4
osbuild-composer-core - update to 165.1-4
osbuild-composer-worker - update to 165.1-4

External References

Related Security Bulletins