CVE-2026-43084
Published: May 6, 2026
Modified: May 11, 2026
CVSS v3.1
7.8
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 371de2bef6582a3f58049b3d18e190924af9c9a0 - < 22730cb96093b5be0609063bbb1923dbecd61252affected 870e3e63da8e88daffe9d692a025c711658018a8 - < 41e3652a178cb0eecd48e0e6e27fbb73a004046aaffected 70e2e3ce4f6841e12ec1c104fc76c0e707398ec4 - < 9e5ebef91120d2764aefe557c3a484b6288f341faffected e19079adcd26a25d7d3e586b1837493361fdf8b6 - < 936206e3f6ff411581e615e930263d6f8b78df9d |
Linux | Linux | affected 6.12.75 - < 6.12.83affected 6.18.14 - < 6.18.24affected 6.19.4 - < 6.19.14 |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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