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CVE-2026-98103VulnerabilityPublished Updated

Microsoft · igmp: convert struct ip_sf_list to RCU

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98103· Medium

Not known to be exploited · fixed in f5182dfad54277267a8cb0c004a9cd4cf35aeebb : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:48 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in f5182dfad54277267a8cb0c004a9cd4cf35aeebb, e3206419bdb04e2087d8cc6be324df8639b3fac5, d3011d1f293478c730aa0870490afa145c37600e +10

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=4.4.284 <4.5
  • >=4.9.283 <4.10
  • >=4.14.247 <4.15
  • >=4.19.207 <4.20
  • >=5.4.145 <5.5
  • >=5.10.64 <5.11
  • >=5.13.16 <5.14
  • >=5.14.3 <5.15
Fixed in
  • f5182dfad54277267a8cb0c004a9cd4cf35aeebb
  • e3206419bdb04e2087d8cc6be324df8639b3fac5
  • d3011d1f293478c730aa0870490afa145c37600e
  • 2987ee196c88dbde0463dc87d5fb209c684e34a2
  • 01131daffc4b64f1652e23dc3e6e2f601eda781d
  • 5.15
  • 5.14
  • 5.11
  • 5.5
  • 4.20
  • 4.15
  • 4.10
  • 4.5
LinuxLinuxAffected
  • =5.15
Fixed in–

Description

This entry references a vulnerability identified as CVE-2026-98103 related to the conversion of the struct ip_sf_list to RCU in Microsoft software versions 3.0 and 4.0. No detailed technical information, impact description, or exploit data is provided.

References

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