CVE-2026-72383

🎯 CVE-2026-72383 🇪🇺 EUVD

💬 0 Diskussion 📄 .md Alle CVEs anzeigen ✕

CVE-2026-72383 | In the Linux kernel, the following vulnerability has been resolved: sctp: fix addr_wq_timer race in sctp_free_addr_wq() sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete() while holding addr_wq_lock. However, timer_delete() does not guarantee that a currently running timer handler has completed. This allows a race with sctp_addr_wq_timeout_handler(), where the handler may still run after addr_waitq has been freed, acquire addr_wq_lock

In the Linux kernel, the following vulnerability has been resolved:

sctp: fix addr_wq_timer race in sctp_free_addr_wq()

sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete()
while holding addr_wq_lock. However, timer_delete() does not guarantee that
a currently running timer handler has completed.

This allows a race with sctp_addr_wq_timeout_handler(), where the handler
may still run after addr_waitq has been freed, acquire addr_wq_lock, and
access freed memory, leading to a use-after-free.

Fix this by calling timer_shutdown_sync() before taking addr_wq_lock. This
guarantees that any in-flight timer handler has finished and prevents the
timer from being re-armed during teardown, making subsequent cleanup safe.

Klassifikation & Betroffenheit:

Linux Linux patch: 0Linux 4db67e808640e3934d82ce61ee8e2e89fd877ba8 <a8323fb2ab6cd6978f359daeed6688e0cadf32baLinux patch: 7.1.5Linux 4db67e808640e3934d82ce61ee8e2e89fd877ba8 <5098308ad72f83f3b1a48c247dddab1695114baeLinux patch: 6.6.160Linux patch: 6.12.114Linux 4db67e808640e3934d82ce61ee8e2e89fd877ba8 <c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1Linux 3.7

Improper Control of Generation of Code 🎯 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-2026-98464 9.3 CVE-2026-99999 9.3 CVE-2026-90049 9.3 CVE-2026-89930 9.3 CVE-2026-89918 9.3

🩹 Patch verfügbar (OSV):

🩹 Kernel ≥ 6.1.191 🩹 Kernel ≥ 6.6.160 🩹 Kernel ≥ 6.12.114 🩹 Kernel ≥ 6.18.40 🩹 Kernel ≥ 7.1.5

📰 Eigene Berichterstattung: ➔ CVE-2026-72383 | Linux Kernel up to 6.18.39/7.1.4/7.2-rc1 sctp sctp_free_addr_wq

🇩🇪 BSI-Sicherheitshinweise: BSI · hoch · Linux Kernel: Mehrere Schwachstellen ↗

📚 Referenzen & Quellen:

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

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 08/2026

Heute 05.11.

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

CNA-Bewertung (Linux): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Veröffentlicht:15.08.2026

Aktualisiert:30.10.2026 13:19

Assigner (CNA):Linux

EUVD-ID:EUVD-2026-59282

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	CVEs	Anteil
≥90 %	777	0,2 %
≥50 %	3.489	0,9 %
≥10 %	22.838	5,7 %
<10 %	374.789	93,3 %

7.8 HIGH

EPSS

0.2%

CVE-2026-72383 💻 Lokal 🔑 Geringe Nutzerrechte nötig

Linux

CVE-2026-72383 | In the Linux kernel, the following vulnerability has been resolved: sctp: fix addr_wq_timer race in sctp_free_addr_wq() sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete() while holding addr_wq_lock. However, timer_delete() does not guarantee that a currently running timer handler has completed. This allows a race with sctp_addr_wq_timeout_handler(), where the handler may still run after addr_waitq has been freed, acquire addr_wq_lock

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

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

vor 2 Monaten ↻ vor 14 Tagen

🛡️ Details ➔

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