Linux Kernel Vulnerability Affects xfrm State Management

CVE-2026-68415

What is CVE-2026-68415?

A vulnerability in the Linux kernel's xfrm module affects state management, potentially causing kernel panics and system crashes. Specifically, a failure in the IP transport family state setup could lead to stale callbacks remaining in memory even after a failed initialization. This flaw allows for a scenario where garbage collection does not clear these callbacks, leading to fatal exceptions when the kernel attempts to dereference these stale pointers. The impact of this vulnerability may manifest as abrupt system instability or crashes due to kernel panics, posing significant risks to system security and reliability.

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