smb: client: fix smbd_connection leak on cifs_get_tcp_session() error
Critical vendor advisory
CVE-2026-98172
Summary
smb: client: fix smbd_connection leak on cifs_get_tcp_session() error Published in October 2026 Security Updates.
Why it matters
Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates. EPSS percentile: 6%.
Operator check
Review the Microsoft Security Update Guide entry for CVE-2026-98172. Confirm whether Mariner is deployed, then apply the current security update or documented mitigation. CVSS score: 9.8. EPSS probability: 0.2%; percentile: 6%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.