CVE-2026-74495 — CVE & Security Advisory Radar

🎯 CVE-2026-74495 CRITICAL 9.8 🔥 EPSS 51% 🇪🇺 EUVD

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CVE-2026-74495 | In the Linux kernel, the following vulnerability has been resolved: igbvf: Fix leak in TX DMA error cleanup If an error is encountered while mapping TX buffers, the driver should unmap any buffers already mapped for that skb. Because count is incremented before each frag mapping, it will always match the correct number of unmappings needed when dma_error is reached. Decrementing count before the while loop in dma_error causes an off-by-one error. If any ma

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

igbvf: Fix leak in TX DMA error cleanup

If an error is encountered while mapping TX buffers, the driver should
unmap any buffers already mapped for that skb.

Because count is incremented before each frag mapping, it will always
match the correct number of unmappings needed when dma_error is reached.
Decrementing count before the while loop in dma_error causes an
off-by-one error. If any mapping was successful before an unsuccessful
mapping, exactly one DMA mapping (the head) would leak.

This bug was introduced by a 2010 fix for an endless loop in dma_error.
All other affected drivers have already been fixed.

Klassifikation & Betroffenheit:

Linux Linux c1fa347f20f17f14a4a1575727fa24340e8a9117 <0565052b7e2f436b7f1541f4849da96dc0aa7a0eLinux patch: 6.18.44Linux patch: 6.6.151Linux patch: 7.2Linux c1fa347f20f17f14a4a1575727fa24340e8a9117 <e3ed89c257f6361f13df23023cd10ace830330adLinux c1fa347f20f17f14a4a1575727fa24340e8a9117 <bc25d56c03e41c10bc4b40e99ca5d7b941675c04Linux patch: 5.15.216Linux c1fa347f20f17f14a4a1575727fa24340e8a9117 <31089f4eab42e0fc248ec80c26f9b0bad59ba4cc

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-2026-74475 10.0 CVE-2026-74309 10.0 CVE-2026-74280 10.0 CVE-2026-74279 10.0 CVE-2026-72421 10.0

🩹 Patch verfügbar (OSV):

🩹 Kernel ≥ 5.10.265 🩹 Kernel ≥ 5.15.216 🩹 Kernel ≥ 6.1.183 🩹 Kernel ≥ 6.6.151 🩹 Kernel ≥ 6.12.103 🩹 Kernel ≥ 6.18.44

📚 Referenzen & Quellen:

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

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 08/2026

Heute 13.09.

CVSS-Vektor-Analyse: 9.8

AV · Angriffsvektor Netzwerk

AC · Komplexität Gering

PR · Privilegien Keine

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Hoch

A · Verfügbarkeit Hoch

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

Veröffentlicht:15.08.2026

Aktualisiert:19.08.2026 17:21

Assigner (CNA):Linux

EUVD-ID:EUVD-2026-59688

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	2026-09-12
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

9.8 CRITICAL

🇪🇺 EUVD

EPSS

51%

CVE-2026-74495 🌐 Netzwerk (Remote) 🔓 Keine Authentifizierung nötig

Linux

CVE-2026-74495 | In the Linux kernel, the following vulnerability has been resolved: igbvf: Fix leak in TX DMA error cleanup If an error is encountered while mapping TX buffers, the driver should unmap any buffers already mapped for that skb. Because count is incremented before each frag mapping, it will always match the correct number of unmappings needed when dma_error is reached. Decrementing count before the while loop in dma_error causes an off-by-one error. If any ma

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

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

15.08.2026

🛡️ Details ➔

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