CVE-2026-11793
Fixed in a distro release EPSS <1%CVSS 4.9
A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.
Products: Red Hat Directory Server 11, Red Hat Directory Server 12, Red Hat Directory Server 13, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | 389-ds-base | no fix |
| Debian 13 | 389-ds-base | no fix |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | 389-ds | 2.2.10~git255.752643c78-150500.3.48.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | 389-ds | 2.2.10~git255.752643c78-150500.3.48.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | 389-ds | 2.7.0~git212.9b0755edb-150700.3.19.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | 389-ds | 2.2.10~git255.752643c78-150500.3.48.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | 389-ds | 2.2.10~git255.752643c78-150600.8.32.1 |
| SUSE Linux Enterprise Server 16.0 | 389-ds | 3.0.6~git382.7a51ea5f5-160000.1.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | 389-ds | 2.2.10~git255.752643c78-150500.3.48.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | 389-ds | 2.2.10~git255.752643c78-150600.8.32.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | 389-ds | 3.0.6~git382.7a51ea5f5-160000.1.1 |
| Ubuntu 22.04 LTS | 389-ds-base | no fix |
| Ubuntu 24.04 LTS | 389-ds-base | no fix |
| Ubuntu 25.10 | 389-ds-base | no fix |
| Ubuntu 26.04 LTS | 389-ds-base | no fix |
| Ubuntu 26.10 | 389-ds-base | no fix |
| Ubuntu Pro 16.04 LTS | 389-ds-base | no fix |
| Ubuntu Pro 18.04 LTS | 389-ds-base | no fix |
| Ubuntu Pro 20.04 LTS | 389-ds-base | no fix |
| openSUSE Leap 16.0 | 389-ds | 3.0.6~git382.7a51ea5f5-160000.1.1 |
| openSUSE Tumbleweed | 389-ds | 3.2.2+4b41542b2-1.1 |