CVE-2026-64579

The CVE-2026-64579 entry describes a Linux kernel xfrm policy issue in xfrm_hash_rebuild: the first loop preallocates bins for the reinsert path, but the guard inversion causes inexact policy reinserts to allocate at GFP_ATOMIC during reinsert, risking LIST_POISON2 dereferences and a crash under ...

EUVD-2026-53273

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: preallocate inexact bins before xfrmhashrebuild reinsert xfrmhashrebuild's first loop preallocates the bins/chains the reinsert loop needs, so the reinsert after hlistdelrcu cannot allocate or fail. But its guard is...

EUVD-2026-24900

In the Linux kernel, the following vulnerability has been resolved: xfrm: prevent policyhthresh.work from racing with netns teardown A XFRMMSGNEWSPDINFO request can queue the per-net work item policyhthresh.work onto the system workqueue. The queued callback, xfrmhashrebuild, retrieves the...

CVE-2026-31516 xfrm: prevent policy_hthresh.work from racing with netns teardown

In the Linux kernel, the following vulnerability has been resolved: xfrm: prevent policyhthresh.work from racing with netns teardown A XFRMMSGNEWSPDINFO request can queue the per-net work item policyhthresh.work onto the system workqueue. The queued callback, xfrmhashrebuild, retrieves the...

CVE-2026-31516

The CVE-2026-31516 relates to the Linux kernel XFRM subsystem. A race occurs during net namespace teardown when a work item (policy_hthresh.work) queued by XFRM_MSG_NEWSPDINFO may run after the netns is freed, allowing xfrm_hash_rebuild() to dereference a freed struct net (potential use-after-fre...