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CVE-2026-98311

wifi: virt_wifi: don't transfer operstate before register

No known exploitation. EPSS puts it in the 3rd percentile. Fixed versions are out.

CVSS 3.17.8HighEPSS percentile3rd0.1% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix1 product4 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • LinuxAffected: ≥ c7cdba31ed8b87526db978976392802d3f93110c, < ee9ea1afd6990def51d52b3a0aecd5cfcc951da0Upgrade to: ee9ea1afd6990def51d52b3a0aecd5cfcc951da0Affected: ≥ c7cdba31ed8b87526db978976392802d3f93110c, < 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225Upgrade to: 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225Affected: ≥ c7cdba31ed8b87526db978976392802d3f93110c, < f9526054c2b2cace5916b7225603d008834ec011Upgrade to: f9526054c2b2cace5916b7225603d008834ec011Affected: ≥ c7cdba31ed8b87526db978976392802d3f93110c, < e8304e25c6dabb8accf38b807969438d0ce84fd7Upgrade to: e8304e25c6dabb8accf38b807969438d0ce84fd7 + 4 more branchesStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

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What it is

From the CVE record

In the Linux kernel, the following vulnerability has been resolved: wifi: virt_wifi: don't transfer operstate before register virt_wifi_newlink() calls netif_stacked_transfer_operstate() before register_netdevice(). If the lower device is dormant, that queues the new netdev on lweventlist while it is still uninitialized. If registration fails after that, for example because of an invalid name such as "bad/name", free_netdev() immediately frees the object. A later linkwatch_fire_event() then use-after-frees the list entry. Move the transfer to after netdev_upper_dev_link(), as macvlan and ipvlan already do.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS3rd
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.1% chance of exploitation activity in the next 30 days, which ranks it in the 3rd percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

3 events over 1 day, from the signal feeds we watch.

  1. Record updated
  2. Publishedrecord updated

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 7.8 by NVD.

How it is reached

  • Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Sources

References in the record

And 5 more references. See all after sign-in

In the news

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