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

CVE-2026-98704: wifi: mac80211: keep fallback association elements alive

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 0878594c5806dd29fa5e16cc026ce19158afdad2, 1d9644753d46c86b4e5c05bd6d9d35339ea27331, 409da4ad76d921b173ebb801e316023f74564239; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1.

Low priority for now. Upgrade to Linux Linux 0878594c5806dd29fa5e16cc026ce19158afdad2, 1d9644753d46c86b4e5c05bd6d9d35339ea27331, 409da4ad76d921b173ebb801e316023f74564239; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1 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: mac80211: keep fallback association elements alive Associating to a non-transmitted MBSSID profile reads freed memory while determining the operating channel and applying HT capabilities. When an association response omits WMM, HT, or VHT information, ieee80211_assoc_config_link() parses the cached BSS IEs and copies the missing element pointers out of that fallback parse. For a non-transmitted MBSSID profile those pointers refer to merged-profile storage owned by the parse object, and the fallback block frees that object at its end. The copied pointers are used afterwards to determine the operating channel, configure bandwidth, and apply HT capabilities. Keep the fallback parse result alive until association setup finishes. [reorder variable declaration]

—No exploit Fix available
Published
Oct 18, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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.

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • 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

    • 5.2affected
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before 409da4ad76d921b173ebb801e316023f74564239affected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before fb47973eecd869ab5662bb39002f6680536caa6caffected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before 64183344f6f29ed0cad33d6ec0e769aa5e31fb19affected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before de77b0f68142147e74fac1c497dbe1f93daeeed9affected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before 1d9644753d46c86b4e5c05bd6d9d35339ea27331affected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before d0183cd1f6a2dba9e63be20af2f65093c9c8d121affected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before 0878594c5806dd29fa5e16cc026ce19158afdad2affected · git
    • 5023b14cf4df4d22e1a80738167f3438c9e62e5f and later · before a10a2f80476d166fd81c361ec0319493671b694eaffected · git
    • before 5.2not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.10-17.2.10-1

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-2026-98702Oct 18, 2026 · wifi: mac80211: reject invalid 320 MHz CSA bandwidth
    0Monitor
  • ← EarlierCVE-2026-98703Oct 18, 2026 · wifi: mac80211: minstrel_ht: validate fixed rate index
    0Monitor
  • Later →CVE-2026-98705Oct 18, 2026 · wifi: mac80211: account proxy paths against the mesh path limit
    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 Linux0878594c5806dd29fa5e16cc026ce19158afdad2Vendor (CNA)
Linux Linux1d9644753d46c86b4e5c05bd6d9d35339ea27331Vendor (CNA)
Linux Linux409da4ad76d921b173ebb801e316023f74564239Vendor (CNA)
Linux Linux64183344f6f29ed0cad33d6ec0e769aa5e31fb19Vendor (CNA)
Linux Linuxa10a2f80476d166fd81c361ec0319493671b694eVendor (CNA)
Linux Linuxd0183cd1f6a2dba9e63be20af2f65093c9c8d121Vendor (CNA)
Linux Linuxde77b0f68142147e74fac1c497dbe1f93daeeed9Vendor (CNA)
Linux Linuxfb47973eecd869ab5662bb39002f6680536caa6cVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.159.1-1 on Azure Linux 3.06.6.161.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package 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 7, 2026+19 d
EPSS, last 120 days

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

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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. Exploit maturity— → none
  2. 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.

All records