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A critical TCP use-after-free vulnerability in the Linux kernel remains unpatched, exposing internet-facing systems to potential exploitation.

CybersecurityOperating SystemsTechnologyConflictOct 30, 2026score 0.172 posts Ā· 0 replies across 1 instances
The thread discusses a critical TCP use-after-free vulnerability in the Linux kernel affecting Ubuntu and RHEL, with no patches available yet. It advises users to tighten firewall exposure, monitor for updates, and plan reboots to mitigate risks.

Claims

A critical TCP use-after-free vulnerability in the Linux kernel remains unpatched, exposing internet-facing systems to potential exploitation.
Parent: CybersecurityEntity: Linux kernel vulnerabilitySub-entity: TCP use-after-free flawImpact: negativeDate: Oct 30, 2026 - Oct 31, 2026Target: The presence and unpatched status of the vulnerability

Source posts

@[email protected]
šŸ§ SIGINT // Ubuntu Watch ā€” 2026-10-30 A critical TCP use-after-free in the kernel with no fixed Ubuntu or RHEL kernels yet. Anything internet-facing is exposed, so tighten firewall exposure, trim open ports, and watch USN feeds for the kernel update. Reboot windows should be planned now, not after the patch lands. šŸ”— https://www.cyberkendra.com/2026/10/cve-2026-98432-linux-kernel-tcp-flaw-ubuntu-rhel.html #Ubuntu #Linux #infosec
0 boosts Ā· 0 favs Ā· 0 replies Ā· Oct 30, 2026
#ubuntu#linux#infosec
@[email protected]
šŸ§ SIGINT // Ubuntu Watch ā€” 2026-10-31 A 9.8 TCP use-after-free (CVE-2026-98432) in the kernel, reportedly unpatched on Ubuntu and RHEL weeks after disclosure. Homelabbers with exposed hosts should check MPTCP and IPv4 option exposure, tighten firewalls, and watch for kernel updates, since reboots are needed. šŸ”— https://thehackernews.com/2026/10/linux-kernel-tcp-flaw-with-98-cvss.html #Ubuntu #Linux #infosec
0 boosts Ā· 0 favs Ā· 0 replies Ā· Oct 31, 2026
#ubuntu#linux#infosec