Linux Kernel Vulnerability in xfrm Component

CVE-2026-31663

What is CVE-2026-31663?

In the Linux kernel, a vulnerability exists within the xfrm component related to improper handling of device references during asynchronous operations. Specifically, the issue arises when the 'dev_put()' function is called too soon, prior to the completion of critical transport operations. This mismanagement can lead to race conditions during device teardown, potentially impacting the integrity of network packet processing. The fix involves modifying the timing of reference release to ensure it occurs only after necessary network functions are completed, thereby preventing potential exploitation avenues.

References