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CVE-2026-58216 on CTRL-OS 26.05

Aliases: CVE-2026-58216

Packages: samba

Status: Plausible

Advisory Information

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.

Updates

2026-07-28 22:35 CEST

Metadata changes:

  • Status for package samba: “Plausible”

2026-07-28 22:26 CEST

Metadata changes:

  • Status for package samba: “New”