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

CVE-2026-98707: wifi: mac80211: shut down RX BA session timer on 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 09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba, 18cf74311f3f0bc77384549d270c489f64c6510a, 225c67a0bea0bd42f568f4842e747bb7f4bafebb; 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 09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba, 18cf74311f3f0bc77384549d270c489f64c6510a, 225c67a0bea0bd42f568f4842e747bb7f4bafebb; 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: shut down RX BA session timer on teardown Tearing down an RX BA session can leave the session timer queued on a freed tid_rx. Later timer-wheel processing and the timer callback itself then run against freed memory. An RX BAR handler can dereference tid_rx under RCU before teardown unpublishes it and stay in its read-side critical section while teardown deletes the session timer. The stale handler can then rearm the timer after timer_delete_sync() returns and before the RCU callback frees tid_rx. Use timer_shutdown_sync() so rearm attempts become ineffective once teardown starts. Keep reorder_timer unchanged: teardown marks the session removed under reorder_lock and its release path checks that state before rearming. session_timer has no equivalent guard because ieee80211_rx_h_ctrl() rearms it before taking reorder_lock.

—No exploit Fix available
Published
Oct 18, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 6th 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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  • 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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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

    • 2.6.36affected
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before 225c67a0bea0bd42f568f4842e747bb7f4bafebbaffected · git
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before 18cf74311f3f0bc77384549d270c489f64c6510aaffected · git
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before d0da6ab1fc53a68025929baf0947519c6c1684dcaffected · git
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before 7bb2a5bd4f07192fca35644fab7d49a17bfbc861affected · git
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before 481f9230284c27052b59c587069f232c5d84779eaffected · git
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before 09b7d5e4f88504e62ddf4ff31ebeebb3b87578baaffected · git
    • a87f736d942c86255e3088c606f0e3eab6bbf784 and later · before e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598eaffected · git
    • before 2.6.36not affected · semver
    • 5.15.224 and later · up to and including 5.15.*not 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-2026-98705Oct 18, 2026 · wifi: mac80211: account proxy paths against the mesh path limit
    0Monitor
  • ← EarlierCVE-2026-98706Oct 18, 2026 · wifi: mac80211: drain PS delivery work during station teardown
    0Monitor
  • Later →CVE-2026-98708Oct 18, 2026 · wifi: mac80211: keep paired old chanctx alive
    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 Linux09b7d5e4f88504e62ddf4ff31ebeebb3b87578baVendor (CNA)
Linux Linux18cf74311f3f0bc77384549d270c489f64c6510aVendor (CNA)
Linux Linux225c67a0bea0bd42f568f4842e747bb7f4bafebbVendor (CNA)
Linux Linux481f9230284c27052b59c587069f232c5d84779eVendor (CNA)
Linux Linux7bb2a5bd4f07192fca35644fab7d49a17bfbc861Vendor (CNA)
Linux Linuxd0da6ab1fc53a68025929baf0947519c6c1684dcVendor (CNA)
Linux Linuxe588e83e5c7a0f6d7a77dbbb58927c8c8cfd598eVendor (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 (6 more)

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

All records