9.8

CVE-2026-72463

xfrm: Fix dev use-after-free in xfrm async resumption

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 4236c30b437b80f673b9e08c8fae38b8d471ac9e
Version < fed4d3195a31125566876952ce66113ec1eb9008
Status affected
Version 0f451b43c88bf2b9c038b414be580efee42e031b
Version < 1acd93259b6be269e26be5d71c224bccd1f8352f
Status affected
Version 1c428b03840094410c5fb6a5db30640486bbbfcb
Version < 63a30015199912bd5055bead8001b1ae68a67cdb
Status affected
Version 1c428b03840094410c5fb6a5db30640486bbbfcb
Version < 8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff
Status affected
Version 5002beda5cac69d522dc54da0d5d463ed9c963d2
Status affected
Version 6.12.94
Version < 6.12.112
Status affected
Version 6.18.23
Version < 6.18.54
Status affected
Version 6.19.13
Version < 6.20
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.0
Status affected
Version 0
Version < 7.0
Status unaffected
Version <= 6.12.*
Version 6.12.112
Status unaffected
Version <= 6.18.*
Version 6.18.54
Status unaffected
Version <= 7.1.*
Version 7.1.5
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.41% 0.339
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/63a30015199912bd5055bead8001b1ae68a67cdb
https://git.kernel.org/stable/c/8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff
https://git.kernel.org/stable/c/1acd93259b6be269e26be5d71c224bccd1f8352f
https://git.kernel.org/stable/c/fed4d3195a31125566876952ce66113ec1eb9008