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

CVE-2026-98890: wifi: libertas: reject short monitor TX frames

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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 13ff543e0b2c713aedeaadadde686686e949dc78, 443fac3de65c76544b450b9f9903be8989150d55, 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 13ff543e0b2c713aedeaadadde686686e949dc78, 443fac3de65c76544b450b9f9903be8989150d55, 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 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: libertas: reject short monitor TX frames In monitor mode, lbs_hard_start_xmit() casts skb->data to a radiotap TX header, skips that header, and then copies the 802.11 destination address from offset 4 in the remaining frame. The generic length check only rejects zero-length and oversized skbs, so a short monitor frame can be read past the end of the skb data. Require enough bytes for the radiotap TX header and the destination address field before using the monitor-mode header layout.

—No exploit Fix available
Published
Oct 23, 2026
Updated
Oct 26, 2026
EPSS
0.1% · 8th 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

    • 2.6.22affected
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before 68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3caffected · git
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before d865dd6de8295f2bfaa83f0f5d49d2bef1543065affected · git
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8affected · git
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before b657cc98d7936c5d9ed7e0e1944ad0e1f36375bbaffected · git
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before 443fac3de65c76544b450b9f9903be8989150d55affected · git
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before cdcfd662c67833d89ee3d912efde2eb67c8a7326affected · git
    • 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 and later · before 13ff543e0b2c713aedeaadadde686686e949dc78affected · git
    • before 2.6.22not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not 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:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-98888Oct 23, 2026 · arm64: kprobes: Allow reentering kprobes while single-stepping
    0Monitor
  • ← EarlierCVE-2026-98889Oct 23, 2026 · wifi: iwlwifi: mvm: fix sched scan IE sizing
    31Monitor
  • Later →CVE-2026-98891Oct 23, 2026 · wifi: mac80211: validate deauth frame length before reason access
    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 Linux13ff543e0b2c713aedeaadadde686686e949dc78Vendor (CNA)
Linux Linux443fac3de65c76544b450b9f9903be8989150d55Vendor (CNA)
Linux Linux6576baa3fdbaa91fa75e4ba27095f4b8a27349a8Vendor (CNA)
Linux Linux68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3cVendor (CNA)
Linux Linuxb657cc98d7936c5d9ed7e0e1944ad0e1f36375bbVendor (CNA)
Linux Linuxcdcfd662c67833d89ee3d912efde2eb67c8a7326Vendor (CNA)
Linux Linuxd865dd6de8295f2bfaa83f0f5d49d2bef1543065Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · 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. TodayOct 31, 2026+8 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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