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CVE-2026-72004· NVD / CVE Program· CNA Linux

wifi: mac80211: fix memory leak in ieee80211_register_hw()

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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 08b71bd92317f99642b842cfc0d30200868162fc, 3d8b9b290421c3cd505fcd2f551f143f8142786a, 45e9ac538cdff7bce656d731114a64eda85af0d7.

Low priority for now. Upgrade to Linux Linux 08b71bd92317f99642b842cfc0d30200868162fc, 3d8b9b290421c3cd505fcd2f551f143f8142786a, 45e9ac538cdff7bce656d731114a64eda85af0d7 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: fix memory leak in ieee80211_register_hw() If kmemdup() fails while copying supported band structures, the error path jumps to fail_rate. This skips rate_control_deinitialize() and leaks the initialized local->rate_ctrl. Fix this by adding a fail_band label that shares the rate-control cleanup path before falling through to the remaining teardown. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc7. An x86_64 allyesconfig build showed no new warnings. As we do not have a suitable mac80211 device/driver combination to test with, no runtime testing was able to be performed.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 17, 2026
EPSS
0.2% · 11th 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 · 0.2%

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

    • 4.20affected
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before f01eec75fd372961550b928902f3a2c11fca1dafaffected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before 3d8b9b290421c3cd505fcd2f551f143f8142786aaffected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before 08b71bd92317f99642b842cfc0d30200868162fcaffected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before a02b52fe54f7b5107aefa1ce28c2f69749c57616affected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before 45e9ac538cdff7bce656d731114a64eda85af0d7affected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before bdc0b8bfdc142439d6708b072e8159eb515ee7b0affected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before a7584f261e64fe14e45bdf70f343e16c1ee3a037affected · git
    • 09b4a4faf9d037990ac4f8110dd944b27b42d5df and later · before 95fc02722edde02946d0d475221f2b2054d3d8baaffected · git
    • before 4.20not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-68476Aug 15, 2026 · ipvs: reload ip header after head reallocation
    39Monitor
  • ← EarlierCVE-2026-68478Aug 15, 2026 · memstick: ms_block: reject a card that reports too many blocks
    0Monitor
  • Later →CVE-2026-72006Aug 15, 2026 · net/mlx5: free mlx5_st_idx_data on final dealloc
    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 Linux08b71bd92317f99642b842cfc0d30200868162fcVendor (CNA)
Linux Linux3d8b9b290421c3cd505fcd2f551f143f8142786aVendor (CNA)
Linux Linux45e9ac538cdff7bce656d731114a64eda85af0d7Vendor (CNA)
Linux Linux95fc02722edde02946d0d475221f2b2054d3d8baVendor (CNA)
Linux Linuxa02b52fe54f7b5107aefa1ce28c2f69749c57616Vendor (CNA)
Linux Linuxa7584f261e64fe14e45bdf70f343e16c1ee3a037Vendor (CNA)
Linux Linuxbdc0b8bfdc142439d6708b072e8159eb515ee7b0Vendor (CNA)
Linux Linuxf01eec75fd372961550b928902f3a2c11fca1dafVendor (CNA)
debian:linux6.1.180-1 · 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.

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).

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 (7 more)

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

All records