Description
A flaw was found in Keystone. There is a time lag (up to one hour in a default configuration) between when security policy says a token should be revoked from when it is actually revoked. This could allow a remote administrator to secretly maintain access for longer than expected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | openstack-keystone | openstack-keystone as shipped in Red Hat OpenStack 16.1 and 16.2 | — |
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 | python-keystonemiddleware | 10.1.0-4 | — |
| Debian 13 | python-keystonemiddleware | 10.1.0-4 | — |
| Debian 12 | python-keystonemiddleware | 10.1.0-4 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | keystone | 2:21.0.1-0ubuntu2.1 | USN-7926-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | keystone | No fix yet | — |
| Ubuntu Pro 18.04 LTS | keystone | No fix yet | — |
| Ubuntu Pro 16.04 LTS | keystone | No fix yet | — |
Advisories 1
- USN-7926-1 keystone vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026