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CVE-2026-98311

7.8 · HIGH

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 r…

Published Oct 6, 2026EPSS 0.14%

Overview

CVE-2026-98311 is a high-severity vulnerability. It was published on October 6, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/293c56a66510bb7de073a1aba388e38abddff1fbRefgit.kernel.org/stable/c/9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225Refgit.kernel.org/stable/c/b808a9af5fd21f9c68b0d024eda7535b5dce6a4eRefgit.kernel.org/stable/c/ca49763c42c1089d654bf11b037980a9ede3772cRefgit.kernel.org/stable/c/e5c8d7acd31b27057ea42cd405d0b3ece097bc89Refgit.kernel.org/stable/c/e8304e25c6dabb8accf38b807969438d0ce84fd7Refgit.kernel.org/stable/c/ee9ea1afd6990def51d52b3a0aecd5cfcc951da0Refgit.kernel.org/stable/c/f9526054c2b2cace5916b7225603d008834ec011

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98311?

CVE-2026-98311 is a high-severity vulnerability. It was published on October 6, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-98311?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-98311?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-98311?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98311 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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