EUVD-2026-27578CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionNVD
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.
AnalysisAI
Local privilege escalation in Linux kernel netfilter nfnetlink_queue allows authenticated users with low privileges to execute arbitrary code with high integrity and availability impact via race condition in shared hash table. The vulnerability stems from a use-after-free condition when multiple queues share a global hash table, enabling parallel CPU operations to access freed nf_queue_entry structures. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 24 hours: Identify all Linux systems running affected kernel versions (pre-6.12.83, pre-6.18.24, pre-6.19.14) using inventory and patch management tools. Within 7 days: Apply vendor-released kernel patches to production systems following your change management process-prioritize systems with high-privileged service isolation requirements. …
Sign in for detailed remediation steps.
More from same product – last 7 days
Kernel availability loss in Ubuntu Linux 6.8, 6.17, and 7.0 can be triggered by any unprivileged local user via a defect
Kernel panic via NULL pointer dereference in Ubuntu Linux 6.8's AppArmor notification handler allows a locally authentic
NULL pointer dereference in Ubuntu Linux kernel versions 6.8, 6.17, and 7.0 allows a local unprivileged user to crash th
NULL pointer dereference in Ubuntu Linux kernel SAUCE patches (versions 6.8, 6.17, and 7.0) allows an unprivileged local
In the Linux kernel, the following vulnerability has been resolved: netfilter: arp_tables: fix IEEE1394 ARP payload par
Vendor StatusVendor
Share
External POC / Exploit Code
Leaving vuln.today