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.
References
Configurations
Configuration 1 (hide)
|
History
20 May 2026, 23:06
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-416 | |
| References | () https://git.kernel.org/stable/c/22730cb96093b5be0609063bbb1923dbecd61252 - Patch | |
| References | () https://git.kernel.org/stable/c/41e3652a178cb0eecd48e0e6e27fbb73a004046a - Patch | |
| References | () https://git.kernel.org/stable/c/936206e3f6ff411581e615e930263d6f8b78df9d - Patch | |
| References | () https://git.kernel.org/stable/c/9e5ebef91120d2764aefe557c3a484b6288f341f - Patch |
08 May 2026, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
06 May 2026, 10:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-06 10:16
Updated : 2026-06-05 00:24
NVD link : CVE-2026-43084
Mitre link : CVE-2026-43084
CVE.ORG link : CVE-2026-43084
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free