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

CVE-2026-98706: wifi: mac80211: drain PS delivery work during station teardown

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 01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8, 086e7aebd3a9f91435cac348828a339e1070b188, 097460fcdd8ab9ef6f6018b2fdc29ba0ea499298; 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 01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8, 086e7aebd3a9f91435cac348828a339e1070b188, 097460fcdd8ab9ef6f6018b2fdc29ba0ea499298; 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: drain PS delivery work during station teardown Removing an AP or mesh station can notify the driver and wake TXQs after the station has already been removed from the driver, and can update num_sta_ps and the power-save queues after station cleanup has purged them. sta_deliver_ps_frames() tests sta->dead only before it starts delivery. A worker that passes that test can be delayed while teardown sets sta->dead and removes the station from the driver; when it resumes it still runs the full delivery. The existing cancel_work_sync() sits near the end of __cleanup_single_sta(), after the final driver state transition and after PS accounting and queue purging, so it drains the worker only once the state it has to protect has already changed. Before commit d34ba2168a3c ("mac80211: don't delay station destruction") cleanup was deferred through the same ordered workqueue as the delivery work, which kept the two ordered. Cancel the work after setting sta->dead and before moving the driver state, and move the existing cancellation to the start of __cleanup_single_sta(). The first drain closes the driver-lifetime window; driver callbacks during the remaining state transitions can still queue drv_deliver_wk through ieee80211_sta_block_awake(), so retain the second drain at the start of __cleanup_single_sta(). That drain also covers insertion failures, which reach cleanup without setting sta->dead.

—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%

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Noroxi analysis

What does it mean in your environment?

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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

    • 3.14affected
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before 01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8affected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before dedae75046c47d191b9ffe3771c09281a9a94fbaaffected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before 086e7aebd3a9f91435cac348828a339e1070b188affected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before cbff71fe689f359ebd6a3eaded035ef75226afceaffected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before 843d3a1e6f25027ac85f88f67b95d82c67306deeaffected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before 772bd89304ecf057cc51ce4ce24a1a96ac9c8de3affected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before 097460fcdd8ab9ef6f6018b2fdc29ba0ea499298affected · git
    • d34ba2168a3c10e7301cca06069c39865b4c3ec6 and later · before 67a9e80c3ca20c9044cd6ee72cd6278dd19b5023affected · git
    • before 3.14not 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-2026-98704Oct 18, 2026 · wifi: mac80211: keep fallback association elements alive
    0Monitor
  • ← EarlierCVE-2026-98705Oct 18, 2026 · wifi: mac80211: account proxy paths against the mesh path limit
    0Monitor
  • Later →CVE-2026-98707Oct 18, 2026 · wifi: mac80211: shut down RX BA session timer on teardown
    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 Linux01292d4c491b9b78c23cde3c5eaa9fb8c8e241f8Vendor (CNA)
Linux Linux086e7aebd3a9f91435cac348828a339e1070b188Vendor (CNA)
Linux Linux097460fcdd8ab9ef6f6018b2fdc29ba0ea499298Vendor (CNA)
Linux Linux67a9e80c3ca20c9044cd6ee72cd6278dd19b5023Vendor (CNA)
Linux Linux772bd89304ecf057cc51ce4ce24a1a96ac9c8de3Vendor (CNA)
Linux Linux843d3a1e6f25027ac85f88f67b95d82c67306deeVendor (CNA)
Linux Linuxcbff71fe689f359ebd6a3eaded035ef75226afceVendor (CNA)
Linux Linuxdedae75046c47d191b9ffe3771c09281a9a94fbaVendor (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