7.8

CVE-2026-43084

netfilter: nfnetlink_queue: make hash table per queue

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nfnetlink_queue: make hash table per queue

Sharing a global hash table among all queues is tempting, but
it can cause crash:

BUG: KASAN: slab-use-after-free in nfqnl_recv_verdict+0x11ac/0x15e0 [nfnetlink_queue]
[..]
 nfqnl_recv_verdict+0x11ac/0x15e0 [nfnetlink_queue]
 nfnetlink_rcv_msg+0x46a/0x930
 kmem_cache_alloc_node_noprof+0x11e/0x450

struct nf_queue_entry is freed via kfree, but parallel cpu can still
encounter such an nf_queue_entry when walking the list.

Alternative fix is to free the nf_queue_entry via kfree_rcu() instead,
but as we have to alloc/free for each skb this will cause more mem
pressure.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 371de2bef6582a3f58049b3d18e190924af9c9a0
Version < 22730cb96093b5be0609063bbb1923dbecd61252
Status affected
Version 870e3e63da8e88daffe9d692a025c711658018a8
Version < 41e3652a178cb0eecd48e0e6e27fbb73a004046a
Status affected
Version 70e2e3ce4f6841e12ec1c104fc76c0e707398ec4
Version < 9e5ebef91120d2764aefe557c3a484b6288f341f
Status affected
Version e19079adcd26a25d7d3e586b1837493361fdf8b6
Version < 936206e3f6ff411581e615e930263d6f8b78df9d
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 6.12.75
Version < 6.12.83
Status affected
Version 6.18.14
Version < 6.18.24
Status affected
Version 6.19.4
Version < 6.19.14
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.01% 0.024
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.