CVE-2026-72463

CVE CVE-2026-72463EUVD EUVD-2026-59362Published 2026-08-15T05:57:07.000ZLast changed 2026-08-17T05:44:29.000ZCVSS 9.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix dev use-after-free in xfrm async resumption xfrm async resumption hold skb->dev refcnt until after transport_finish. However, xfrm_rcv_cb may modify skb->dev to tunnel dev without taking device reference, such as vti_rcv_cb. The subsequent async resumption will decrement the tunnel device's reference count, which lead to uaf of tunnel dev and refcnt leak of orig dev as below: unregister_netdevice: waiting for vti1 to become free. Usage count = -2 Stash the original skb->dev to fix refcnt imbalance. The new skb->dev set by xfrm_rcv_cb can race with device teardown. Extend rcu protection over xfrm_rcv_cb and transport_finish to prevent races.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 6.19.13 <6.20; patch: 7.1.5; patch: 0; 4236c30b437b80f673b9e08c8fae38b8d471ac9e; 5002beda5cac69d522dc54da0d5d463ed9c963d2; 0f451b43c88bf2b9c038b414be580efee42e031b; 1c428b03840094410c5fb6a5db30640486bbbfcb <8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff; 1c428b03840094410c5fb6a5db30640486bbbfcb <63a30015199912bd5055bead8001b1ae68a67cdb; 6.12.94 <6.13; patch: 7.2; 6.18.23 <6.19; 7.0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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