Stack-based Buffer Overflow Affecting 389-ds-base package, versions <0:2.8.0-9.el9_8


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.83% (55th percentile)

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  • Snyk IDSNYK-ALMALINUX9-389DSBASE-18959499
  • published19 Aug 2026
  • disclosed17 Aug 2026

Introduced: 17 Aug 2026

CVE-2026-15722  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 389-ds-base to version 0:2.8.0-9.el9_8 or higher.
This issue was patched in ALSA-2026:55423.

NVD Description

Note: Versions mentioned in the description apply only to the upstream 389-ds-base package and not the 389-ds-base package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.

CVSS Base Scores

version 3.1