CIQ Patches Critical Linux Kernel Flaw in 72 Hours
Global – November 05, 2026 -- CIQ patched every affected kernel stream, more than a dozen across three major releases, within 72 hours of the first customer report on critical Linux vulnerability CVE-2026-98432, which carries a CVSS score of 9.8. The first fixed kernels reached CIQ repositories about 45 hours after the first customer questions.
Anthropic exploit demonstration raised the vulnerability's priority
On Tuesday, October 27, Anthropic reported a working proof-of-concept exploit for the flaw. Many CVEs are patched without proof of exploitability, so a demonstrated exploit raised the priority beyond what the severity score alone indicated. The kernel's CVE Numbering Authority assigned the 9.8 score.
The bug is a use-after-free in the Linux kernel's IPv4 TCP code, triggered by IP options on incoming connections. A network-based attacker can exploit the kernel's continued use of memory it has already released.