RHSA-2026:26570HighCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
June 17, 2026
Last Modified
June 17, 2026

🔗 CVE IDs covered (7)

CVE-2026-43158 →CVE-2026-46243 →CVE-2025-21858 →CVE-2025-68800 →CVE-2026-23243 →CVE-2026-23392 →CVE-2026-43116 →

📋 Description

CVE-2025-21858 — kernel: geneve: Fix use-after-free in geneve_find_dev(). CVE-2025-68800 — kernel: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats CVE-2026-23243 — kernel: Linux kernel: Denial of service and memory corruption in RDMA umad CVE-2026-23392 — kernel: netfilter: nf_tables: release flowtable after rcu grace period on error CVE-2026-43116 — kernel: netfilter: ctnetlink: ensure safe access to master conntrack CVE-2026-43158 — kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks CVE-2026-46243 — kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions

🔗 References (10)