In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: hold bridge skb->dev while queued br_pass_frame_up() rewrites skb->dev from the ingress port to the bridge master before queueing bridge LOCAL_IN packets. NFQUEUE only holds references on state.in/out and bridge physdevs, so a queued bridge packet can retain a freed bridge master in skb->dev until reinjection. When the verdict is reinjected later, br_netif_receive_skb() re-enters the receive path with skb->dev still pointing at the freed bridge master, triggering a use-after-free. Store skb->dev in the queue entry, hold a reference on it for the queue lifetime, and use the saved device when dropping queued packets during NETDEV_DOWN handling.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2 cve-icon
https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac cve-icon
https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be cve-icon
https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644 cve-icon
https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f cve-icon
https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57 cve-icon
https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e cve-icon
https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce cve-icon
History

Wed, 24 Jun 2026 07:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: hold bridge skb->dev while queued br_pass_frame_up() rewrites skb->dev from the ingress port to the bridge master before queueing bridge LOCAL_IN packets. NFQUEUE only holds references on state.in/out and bridge physdevs, so a queued bridge packet can retain a freed bridge master in skb->dev until reinjection. When the verdict is reinjected later, br_netif_receive_skb() re-enters the receive path with skb->dev still pointing at the freed bridge master, triggering a use-after-free. Store skb->dev in the queue entry, hold a reference on it for the queue lifetime, and use the saved device when dropping queued packets during NETDEV_DOWN handling.
Title netfilter: nf_queue: hold bridge skb->dev while queued
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-24T07:14:10.583Z

Reserved: 2026-06-09T07:44:35.366Z

Link: CVE-2026-52912

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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