CVE-2026-53239

The CVE-2026-53239 entry documents a Linux kernel race in the xfrm policy subsystem leading to a use-after-free of an inexact bin in xfrm_policy_bysel_ctx(). The issue arises when CPU0 handles XFRM_MSG_DELPOLICY and CPU1 handles XFRM_MSG_NEWSPDINFO, with a window where a freed bin is referenced a...