Out-of-bounds Read Affecting samba-ad-dc-libs package, versions <4.15.13+git.808.eeca19f5e1-150400.3.52.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.46% (38th percentile)

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  • Snyk IDSNYK-SLES154-SAMBAADDCLIBS-18385991
  • published29 Jul 2026
  • disclosed28 Jul 2026

Introduced: 28 Jul 2026

CVE-2026-58216  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 samba-ad-dc-libs to version 4.15.13+git.808.eeca19f5e1-150400.3.52.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba-ad-dc-libs package and not the samba-ad-dc-libs package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.

CVSS Base Scores

version 3.1