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CVE-2026-98417

net: xfrm: reject unrepresentable espintcp transport headers

CVSS score

—

EPSS probability

%0.2

Risk score

—

Published

5 d ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Linux Kernel CVE-2026-98417 Vulnerability

Sources read

2

Source agreement

Tam uyum

Evidence confidence

%63

Short explanation

A vulnerability has been resolved in the Linux kernel regarding the handling of xfrm packets where the transport header offset no longer fits after the ESP-in-TCP stream parser trims the TCP envelope.

Why does it matter?

Careful transport header helpers must be utilized to prevent triggering skb warning paths when transport header offsets cannot be properly represented.

What should be done?

  • Using the careful transport-header helper
  • Dropping skb via the existing XFRM error path
  • Following vendor advisories
Chain of evidence and sources2 verified claims

ESP-in-TCP akış ayrıştırıcısı TCP zarfını kırptıktan sonra taşıma başlığı ofseti uymayabilir.

S0 · daybreach-canonicalS1 · cvelistS2 · nvd

Düz taşıma başlığı sıfırlaması ofseti keser ve skb uyarı yolunu tetikler.

S0 · daybreach-canonicalS1 · cvelistS2 · nvd
Show the technical text from the sources

In the Linux kernel, the following vulnerability has been resolved: net: xfrm: reject unrepresentable espintcp transport headers ESP-in-TCP can hand xfrm packets whose transport header offset no longer fits after the stream parser trims the TCP envelope. The plain transport header reset truncates that offset and triggers the skb warning path. Use the careful transport-header helper and drop the skb through the existing XFRM error path when the offset cannot be represented.

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-98417 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1linuxLinux View
2linuxLinux View
Total affected vendors: 1|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98417 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-20: Improper Input Validation

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98417 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Official Sources and Advisories

https://git.kernel.org/stable/c/d37a5b87577c4b4c1a1dcb000a9dff1df2cf886bvendor-advisoryhttps://git.kernel.org/stable/c/6c29681207bc213188afa603dff2d55e7178a341vendor-advisoryhttps://git.kernel.org/stable/c/4a8243fd2e21980fa3fd10c0610e9155057cebd3vendor-advisoryhttps://git.kernel.org/stable/c/b2b84e73e0386ad0b4f9b8d3afde343e761f5275vendor-advisoryhttps://git.kernel.org/stable/c/327b2a457dd7d5445f7395f371f3c65de79bd5cevendor-advisoryhttps://git.kernel.org/stable/c/cce630c751279e974fa0bb574d80575e0cc7e8f3vendor-advisoryhttps://git.kernel.org/stable/c/206f396f46149dc8bc4dfd2b54b9879ba3ee1d7dvendor-advisoryhttps://git.kernel.org/stable/c/96f01b53c2d05e003b040892256de54a586e8529vendor-advisory

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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