Description
A NULL pointer dereference flaw was found in 389-ds-base. This flaw occurs when a ModifyDN (rename) operation uses an attribute's schema alias name (such as "commonName") instead of its canonical name (such as "cn") as the new relative distinguished name. An authenticated attacker with the ModifyDN (rename) permission on the affected entry can use this flaw to crash the directory server, causing a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Directory Server 11 | — | — |
| Red Hat | Red Hat Directory Server 12 | — | — |
| Red Hat | Red Hat Directory Server 13 | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
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 13 | 389-ds-base | No fix yet | — |
| Debian 12 | 389-ds-base | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | 389-ds-base | No fix yet | — |
| Ubuntu 26.04 LTS | 389-ds-base | No fix yet | — |
| Ubuntu 24.04 LTS | 389-ds-base | No fix yet | — |
| Ubuntu 22.04 LTS | 389-ds-base | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | 389-ds-base | No fix yet | — |
| Ubuntu Pro 18.04 LTS | 389-ds-base | No fix yet | — |
| Ubuntu Pro 16.04 LTS | 389-ds-base | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | 389-ds-base | No fix yet | — |
References
- https://access.redhat.com/security/cve/CVE-2026-117548 vdb-entry
- RHBZ#2561778 issue-tracking