CVE-2016-4997 — CVE & Security Advisory Radar

🎯 CVE-2016-4997 LOW 3.1 🔥 EPSS 5.7% 🧪 PoC 🇪🇺 EUVD

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CVE-2016-4997 | The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

Klassifikation & Betroffenheit:

n/a n/a n/alinux linux_kernel *canonical ubuntu_linux 12.04canonical ubuntu_linux 14.04canonical ubuntu_linux 15.10canonical ubuntu_linux 16.04novell suse_linux_enterprise_software_development_kit 12.0novell suse_linux_enterprise_desktop 12.0

Improper Restriction of Operations within the Bounds of a Memory Buffer 🎯 High

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

🛡️ Empfohlene Mitigation: Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow prot…

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-10 · Buffer Overflow via Environment Variable… (High) CAPEC-14 · Client-side Injection-induced Buffer Ove… (High) CAPEC-24 · Filter Failure through Buffer Overflow (High) CAPEC-42 · MIME Conversion (High) CAPEC-44 · Overflow Binary Resource File (Very High) CAPEC-45 · Buffer Overflow via Symbolic Links (High) CAPEC-100 · Overflow Buffers (Very High) CAPEC-123 · Buffer Manipulation (Very High)

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

CVE-2025-59320 4.6 CVE-2026-35502 4.6 CVE-2026-20765 4.6 CVE-2026-20763 4.6 CVE-2026-67673 4.6

🧪 Exploit-Evidenz: EDB-40435 · Linux Kernel 4.6.3 (x86) - 'Netfilter' Local Privilege Escalation (Met verified EDB-40489 · Linux Kernel 4.6.2 (Ubuntu 16.04.1) - 'IP6T_SO_SET_REPLACE' Local Priv

🩹 Patch verfügbar (OSV):

🩹 ce683e5f9d045e5d67d1312a42b359cb2ab2a13c (Commit) 🩹 ce683e5f9d045e5d67d1312a42b359cb2ab2a13c (Commit)

📚 Referenzen & Quellen:

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

Ausnutzungs-Zeitleiste:

Reserviert 2016

Veröffentlicht 07/2016

Heute 15.09.

Veröffentlicht:03.07.2016

Aktualisiert:17.06.2026 00:48

Assigner (CNA):redhat

EUVD-ID:EUVD-2016-5962

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

CWE-119: Memory Corruption ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-08-29	2026-09-14
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

3.1 LOW

🇪🇺 EUVD

EPSS

5.7%

CVE-2016-4997 💻 Lokal 🔓 Keine Authentifizierung nötig

🧪 n/a

CVE-2016-4997 | The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

CWE-119: Memory Corruption ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

03.07.2016

🛡️ Details ➔

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