CVE-2026-52912 — CVE & Security Advisory Radar

🎯 CVE-2026-52912 HIGH 7.8 🔥 EPSS 14% 🇪🇺 EUVD

📄 .md Alle CVEs anzeigen ✕

CVE-2026-52912 | 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(

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.

Klassifikation & Betroffenheit:

Linux Linux patch: 7.0.11Linux patch: 5.10.259Linux ac28634456867b23b95faccba7997a62ec430603 <3fb0f5c0f64162a8c3f25616a4f1e340b921737fLinux ac28634456867b23b95faccba7997a62ec430603 <e196115ec330a18de415bdb9f5071aa9f08e53ceLinux ac28634456867b23b95faccba7997a62ec430603 <3823c27099cfe2482299065814adbaa771be9644Linux ac28634456867b23b95faccba7997a62ec430603 <950d809f154dca04e5fbe5d3c8b9c5e44769cd57Linux ac28634456867b23b95faccba7997a62ec430603 <15d464265120ab9818bd673af301deee09bedab2Linux 4.7

Improper Control of Generation of Code ('Code Injection') 🎯 Medium

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

🛡️ Empfohlene Mitigation: Refactor your program so that you do not have to dynamically generate code.

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-35 · Leverage Executable Code in Non-Executab… (Very High) CAPEC-77 · Manipulating User-Controlled Variables (Very High) CAPEC-242 · Code Injection (High)

🎯 ATT&CK-Techniken (Kill-Chain-Verhalten):

T1027.006 · Obfuscated Files or Information: H… T1027.009 · Obfuscated Files or Information: E… T1564.009 · Hide Artifacts: Resource Forking

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-74573 9.3 CVE-2026-74568 9.3 CVE-2026-74517 9.3 CVE-2026-74439 9.3 CVE-2026-74310 9.3

🩹 Patch verfügbar (OSV):

🩹 Kernel ≥ 5.10.259 🩹 Kernel ≥ 5.15.209 🩹 Kernel ≥ 6.1.175 🩹 Kernel ≥ 6.6.142 🩹 Kernel ≥ 6.12.92 🩹 Kernel ≥ 6.18.34

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 06/2026

Heute 16.09.

CVSS-Vektor-Analyse: 7.8

AV · Angriffsvektor Lokal

AC · Komplexität Gering

PR · Privilegien Gering

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Hoch

A · Verfügbarkeit Hoch

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Veröffentlicht:24.06.2026

Aktualisiert:08.09.2026 09:18

Assigner (CNA):Linux

EUVD-ID:EUVD-2026-38715

Quellen: 🇪🇺 EUVD-Datenbank (ENISA) + 🇺🇸 NVD-Anreicherung · 24-h-Cache

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Kernel-Paket aktualisieren (apt upgrade linux-image / yum update kernel) und System neu starten.

Tier	2026-08-29	2026-09-15
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

7.8 HIGH

🇪🇺 EUVD

EPSS

14%

CVE-2026-52912 💻 Lokal 🔑 Geringe Nutzerrechte nötig

Linux

CVE-2026-52912 | 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(

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Kernel-Paket aktualisieren (apt upgrade linux-image / yum update kernel) und System neu starten.

24.06.2026

🛡️ Details ➔

Zero-Day & Vulnerability Intelligence Hub