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

CVE-2026-98698: wifi: mac80211: handle empty FILS association request payload

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 0b1e4a7eeb6a301ee33bd318982927cbdbae9f36, 20f939b0c151d1d28e6b62a76b2454fa6fe877f2, 2f5b62f6534d336a62fdb9e88b186dd70b4323ef; 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 0b1e4a7eeb6a301ee33bd318982927cbdbae9f36, 20f939b0c151d1d28e6b62a76b2454fa6fe877f2, 2f5b62f6534d336a62fdb9e88b186dd70b4323ef; 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: handle empty FILS association request payload fils_encrypt_assoc_req() accepts a (Re)Association Request frame whose last element is the FILS Session element. crypt_len is then zero and aes_siv_encrypt() is called with an empty plaintext. kmemdup() returns ZERO_SIZE_PTR for a zero-length allocation, so the unconditional sg_init_one() puts an invalid page into the scatterlist. With CONFIG_DEBUG_SG this triggers a kernel BUG in sg_set_buf(); without the debug check the bogus page is handed to the crypto backend. AES-SIV is defined for empty plaintext and the S2V result is then the complete output, so handle this case before the CTR step, which has nothing to encrypt.

—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

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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

    • 4.10affected
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before de3297c8e521c0b0ddc89ece6fee84e25da9ecf0affected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before ce70c87252a14020cb40032efe208efc6e61b1eeaffected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before d8c5dbbf584a1baaa008988ac64dd4495f7086bdaffected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before 0b1e4a7eeb6a301ee33bd318982927cbdbae9f36affected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before 2f5b62f6534d336a62fdb9e88b186dd70b4323efaffected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before 452f1c9b76f7a122bbc4630b9691bda4809677c4affected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before 20f939b0c151d1d28e6b62a76b2454fa6fe877f2affected · git
    • 39404feee691a2dc524a629ed6eb5cfe5d8898d1 and later · before 5bfd4b0b40b79781d900cb2f7da0685070f53c67affected · git
    • before 4.10not 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-2026-98696Oct 18, 2026 · USB: serial: fix driver deregistration order
    0Monitor
  • ← EarlierCVE-2026-98697Oct 18, 2026 · USB: serial: fix dynamic id driver deregistration race
    0Monitor
  • Later →CVE-2026-98699Oct 18, 2026 · wifi: mac80211: fix mesh fast xmit path deletion UAF
    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 Linux0b1e4a7eeb6a301ee33bd318982927cbdbae9f36Vendor (CNA)
Linux Linux20f939b0c151d1d28e6b62a76b2454fa6fe877f2Vendor (CNA)
Linux Linux2f5b62f6534d336a62fdb9e88b186dd70b4323efVendor (CNA)
Linux Linux452f1c9b76f7a122bbc4630b9691bda4809677c4Vendor (CNA)
Linux Linux5bfd4b0b40b79781d900cb2f7da0685070f53c67Vendor (CNA)
Linux Linuxce70c87252a14020cb40032efe208efc6e61b1eeVendor (CNA)
Linux Linuxd8c5dbbf584a1baaa008988ac64dd4495f7086bdVendor (CNA)
Linux Linuxde3297c8e521c0b0ddc89ece6fee84e25da9ecf0Vendor (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+20 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