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NVD / CVE Program· CNA Linux

CVE-2026-68407: wifi: nl80211: free RNR data on MBSSID mismatch

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 07a95ec2b54774201fdf4ef7ffb0ca2ab19ed29c, 312c8b9d7836ef58e552619a8c19be08b04032bb, 4b76fc30c80b240107a7de3c7560113c9290eafc; azl3 kernel 6.6.143.1-1 on Azure Linux 3.0 6.6.150.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 07a95ec2b54774201fdf4ef7ffb0ca2ab19ed29c, 312c8b9d7836ef58e552619a8c19be08b04032bb, 4b76fc30c80b240107a7de3c7560113c9290eafc; azl3 kernel 6.6.143.1-1 on Azure Linux 3.0 6.6.150.1-1 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: nl80211: free RNR data on MBSSID mismatch nl80211_parse_beacon() rejects EMA RNR data when there are fewer RNR entries than MBSSID entries. The rejected RNR allocation has not been attached to the beacon data yet, so free it before returning the error.

—No exploit Fix available
Published
Aug 10, 2026
Updated
Aug 19, 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%

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 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

    • 6.4affected
    • 56189d7bc30531def6b999f27940ee43c6ff2569 and later · before 4b76fc30c80b240107a7de3c7560113c9290eafcaffected · git
    • dbbb27e183b1568d5a907ace1cd144b0709ea52a and later · before fa9592ef7de11f8c7042315d9bc20e91a97f679eaffected · git
    • dbbb27e183b1568d5a907ace1cd144b0709ea52a and later · before 312c8b9d7836ef58e552619a8c19be08b04032bbaffected · git
    • dbbb27e183b1568d5a907ace1cd144b0709ea52a and later · before fb052a6e2fa866384d8edc237746583ec94c15afaffected · git
    • dbbb27e183b1568d5a907ace1cd144b0709ea52a and later · before 6f919f29e9b75793104709987131b8d910d7800aaffected · git
    • dbbb27e183b1568d5a907ace1cd144b0709ea52a and later · before 07a95ec2b54774201fdf4ef7ffb0ca2ab19ed29caffected · git
    • 6.1.160 and later · before 6.1.183affected · semver
    • before 6.4not affected · semver
    • 6.1.183 and later · up to and including 6.1.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.101-1~deb12u16.12.101-1~deb12u1
Debian:13linuxbefore 6.12.101-16.12.101-1
Debian:14linuxbefore 7.1.6-17.1.6-1

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-2026-68405Aug 10, 2026 · wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock
    0Monitor
  • ← EarlierCVE-2026-68406Aug 10, 2026 · wifi: cfg80211: validate PMSR FTM preamble range
    0Monitor
  • Later →CVE-2026-68410Aug 10, 2026 · wifi: libertas: fix memory leak in helper_firmware_cb()
    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 Linux07a95ec2b54774201fdf4ef7ffb0ca2ab19ed29cVendor (CNA)
Linux Linux312c8b9d7836ef58e552619a8c19be08b04032bbVendor (CNA)
Linux Linux4b76fc30c80b240107a7de3c7560113c9290eafcVendor (CNA)
Linux Linux6.1.183Vendor (CNA)
Linux Linux6f919f29e9b75793104709987131b8d910d7800aVendor (CNA)
Linux Linuxfa9592ef7de11f8c7042315d9bc20e91a97f679eVendor (CNA)
Linux Linuxfb052a6e2fa866384d8edc237746583ec94c15afVendor (CNA)
azl3 kernel 6.6.143.1-1 on Azure Linux 3.06.6.150.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.101-1~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.

No dated events beyond publication.

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. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

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

All records