# Intersect urges Cardano operators to patch Linux flaw allowing remote code execution

_Published Sunday, November 1, 2026 at 11:18 AM EST · Security · Latest · Tier 2 — Notable_

![Intersect Urges Cardano Operators to Patch Critical Linux Kernel Vulnerability CVE-2026-98432 | KuCoin — Primary](https://assets.staticimg.com/@kudos/runtime/0.6.23/assets/og-ea52b6f9440e857c.jpg)

Cardano organization Intersect urged stake pool operators on Oct. 30 to update and reboot block producers and relay servers against a critical Linux kernel vulnerability. CVE-2026-98432 affects incoming IPv4 TCP connections; Red Hat says an attacker without credentials could exploit it to execute code.

Ubuntu listed standard kernels for versions 22.04, 24.04, 26.04 and 26.10 as vulnerable, with fixes in progress. AlmaLinux had patched kernels in testing repositories for versions 8, 9 and 10. Disabling unneeded Multipath TCP and filtering certain packets can reduce exposure, but vendors say interim measures cannot replace patches. Intersect reported no exploitation against Cardano.

## Sources

- [kucoin](https://www.kucoin.com/news/flash/intersect-urges-cardano-operators-to-patch-critical-linux-kernel-vulnerability-cve-2026-98432)

---
Canonical: https://techandbusiness.org/newswire/7N35FAnN_j4Ioa5X_jO2iC
Published: 2026-11-01T16:18:47.277Z
Story chronology: 2026-10-30T00:00:00.000Z
Retrieved: 2026-11-01T18:42:45.034Z
Publisher: Tech & Business (techandbusiness.org)