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CVE-2026-98099VulnerabilityPublished Updated

Microsoft · ipv6: mcast: use rcu_assign_pointer() for __rcu list updates

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98099· Medium

Not known to be exploited · fixed in afca229b39acc2590976b3e4f6e0fe76cededc60 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:18 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in afca229b39acc2590976b3e4f6e0fe76cededc60, 49d7e1b456ba2f3ee08b3e264d999c09992cde8e, 2e46b0c9fcf7e10b64ce1630b925f47918d1f7f6 +2

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
  • ≥ 456b61bca8ee324ab6c18b065e632c9a8c88aa39, < afca229b39acc2590976b3e4f6e0fe76cededc60
Fixed in
  • afca229b39acc2590976b3e4f6e0fe76cededc60
LinuxLinuxAffected
  • ≥ 456b61bca8ee324ab6c18b065e632c9a8c88aa39, < 49d7e1b456ba2f3ee08b3e264d999c09992cde8e
Fixed in
  • 49d7e1b456ba2f3ee08b3e264d999c09992cde8e
LinuxLinuxAffected
  • ≥ 456b61bca8ee324ab6c18b065e632c9a8c88aa39, < 2e46b0c9fcf7e10b64ce1630b925f47918d1f7f6
Fixed in
  • 2e46b0c9fcf7e10b64ce1630b925f47918d1f7f6
LinuxLinuxAffected
  • ≥ 456b61bca8ee324ab6c18b065e632c9a8c88aa39, < 0e3e3cec28c4d1bf29948da40b4e9e5d44f7852b
Fixed in
  • 0e3e3cec28c4d1bf29948da40b4e9e5d44f7852b
LinuxLinuxAffected
  • ≥ 456b61bca8ee324ab6c18b065e632c9a8c88aa39, < 0c8f56c583c3250408367880c98e4d6fbc929315
Fixed in
  • 0c8f56c583c3250408367880c98e4d6fbc929315
LinuxLinuxAffected
  • =2.6.38
Fixed in–

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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