AI-Discovered Linux Kernel Zero

Gbhackers •Divya • July 28, 2026

A researcher recently disclosed an AI-assisted Linux kernel zero-day vulnerability, tracked as CVE-2026-53264, which allows local privilege escalation to root on affected systems. This flaw is found in the Linux packet scheduling subsystem (net/sched) and arises from a use-after-free condition involving traffic-control action objects. AI-Discovered Linux Kernel Zero-Day Star Labs researcher developed a reliable exploit […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

AI-Driven Exploit for Linux Kernel Zero-Day CVE-2026-53264 Uncovered A zero-day vulnerability in the Linux kernel, tracked as CVE-2026-53264, has been disclosed, allowing local privilege escalation (LPE) through a use-after-free condition in the net/sched subsystem. Discovered by Lee Jia Jie from STAR Labs, the flaw was aided by AI tools that expedited both the identification and exploitation processes. The vulnerability requires specific kernel configurations and unprivileged user namespaces to be exploitable, affecting CentOS Stream 9 systems. The CVE was published on June 25, 2026, with a proof of concept released on July 28, 2026. The upstream fix was implemented on June 1, 2026, and has been backported to stable branches. Despite the AI assistance, the researcher noted that human expertise remains crucial for effective vulnerability analysis. The exploit showcases the increasing speed at which vulnerabilities can be weaponized, raising concerns for system administrators regarding patch management cycles. 6 sources 71

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AI-Discovered Linux Kernel Zero

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