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CVE-2026-58218 on CTRL-OS 26.05

Aliases: CVE-2026-58218

Packages: samba

Status: Plausible

Advisory Information

A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.

Updates

2026-07-28 22:35 CEST

Metadata changes:

  • Status for package samba: “Plausible”

2026-07-28 22:27 CEST

Metadata changes:

  • Status for package samba: “New”