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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98311: wifi: virt_wifi: don't transfer operstate before register

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.13% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 293c56a66510bb7de073a1aba388e38abddff1fb, 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225, b808a9af5fd21f9c68b0d024eda7535b5dce6a4e; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.

Low priority for now. Upgrade to Linux Linux 293c56a66510bb7de073a1aba388e38abddff1fb, 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225, b808a9af5fd21f9c68b0d024eda7535b5dce6a4e; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Oct 6, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 3th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-98311

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.0affected
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before ee9ea1afd6990def51d52b3a0aecd5cfcc951da0affected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before 9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225affected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before f9526054c2b2cace5916b7225603d008834ec011affected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before e8304e25c6dabb8accf38b807969438d0ce84fd7affected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before ca49763c42c1089d654bf11b037980a9ede3772caffected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before 293c56a66510bb7de073a1aba388e38abddff1fbaffected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before b808a9af5fd21f9c68b0d024eda7535b5dce6a4eaffected · git
    • c7cdba31ed8b87526db978976392802d3f93110c and later · before e5c8d7acd31b27057ea42cd405d0b3ece097bc89affected · git
    • before 5.0not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.8-17.2.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98309Oct 6, 2026 · drm/vc4: Use managed KMS polling to fix UAF on unbind
    0Monitor
  • ← EarlierCVE-2026-98310Oct 6, 2026 · drm/xe/shrinker: Take a runtime PM ref before shrinking non-system memory
    0Monitor
  • Later →CVE-2026-98312Oct 6, 2026 · ALSA: 6fire: fix OOB write from device-reported iso length
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux293c56a66510bb7de073a1aba388e38abddff1fbVendor (CNA)
Linux Linux9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225Vendor (CNA)
Linux Linuxb808a9af5fd21f9c68b0d024eda7535b5dce6a4eVendor (CNA)
Linux Linuxca49763c42c1089d654bf11b037980a9ede3772cVendor (CNA)
Linux Linuxe5c8d7acd31b27057ea42cd405d0b3ece097bc89Vendor (CNA)
Linux Linuxe8304e25c6dabb8accf38b807969438d0ce84fd7Vendor (CNA)
Linux Linuxee9ea1afd6990def51d52b3a0aecd5cfcc951da0Vendor (CNA)
Linux Linuxf9526054c2b2cace5916b7225603d008834ec011Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.8-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 12, 2026+37 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. CVSS— → 7.8
  2. Severity— → high
  3. Exploit maturity— → none
  4. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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