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NVD / CVE Program· CNA Linux

CVE-2026-31604: wifi: rtw88: fix device leak on probe failure

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a, 89a9c1bc7d797120bcc290864e0cb10a440a677f, a4f4371d194dfa5473cc961f86194084b1b13a69; azl3 kernel 6.6.134.1-2 on Azure Linux 3.0 6.6.137.1-1.

Low priority for now. Upgrade to Linux Linux 25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a, 89a9c1bc7d797120bcc290864e0cb10a440a677f, a4f4371d194dfa5473cc961f86194084b1b13a69; azl3 kernel 6.6.134.1-2 on Azure Linux 3.0 6.6.137.1-1 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: rtw88: fix device leak on probe failure Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. This driver takes a reference to the USB device during probe but does not to release it on all probe errors (e.g. when descriptor parsing fails). Drop the redundant device reference to fix the leak, reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of further memory leaks.

Published
Apr 24, 2026
Updated
Nov 11, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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.

Follow CVE-2026-31604

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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.

VendorProduct
linuxlinux kernel

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

    • 6.2affected
    • a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 and later · before f632987306bce9242cdfcf911ee0b2c9455e05a3affected · git
    • a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 and later · before a4f4371d194dfa5473cc961f86194084b1b13a69affected · git
    • a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 and later · before 89a9c1bc7d797120bcc290864e0cb10a440a677faffected · git
    • a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 and later · before af7307e96dad00bcc2675dac650d8558a52f2c6faffected · git
    • a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 and later · before 25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2aaffected · git
    • a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 and later · before bbb15e71156cd9f5e1869eee7207a06ea8e96c39affected · git
    • before 6.2not affected · semver
    • 6.6.136 and later · up to and including 6.6.*not affected · semver
    • 6.12.83 and later · up to and including 6.12.*not affected · semver
Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.2 and later · before 6.6.136
  • linux linux kernel6.7 and later · before 6.12.83
  • linux linux kernel6.13 and later · before 6.18.24
  • linux linux kernel6.19 and later · before 6.19.14
  • linux linux kernel7.0 and later · before 7.0.1

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.14-16.19.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-31602Apr 24, 2026 · ALSA: ctxfi: Limit PTP to a single page
    31Monitor
  • ← EarlierCVE-2026-31603Apr 24, 2026 · staging: sm750fb: fix division by zero in ps_to_hz()
    22Monitor
  • Later →CVE-2026-31605Apr 24, 2026 · fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
    22Monitor

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 Linux25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2aVendor (CNA)
Linux Linux89a9c1bc7d797120bcc290864e0cb10a440a677fVendor (CNA)
Linux Linuxa4f4371d194dfa5473cc961f86194084b1b13a69Vendor (CNA)
Linux Linuxaf7307e96dad00bcc2675dac650d8558a52f2c6fVendor (CNA)
Linux Linuxbbb15e71156cd9f5e1869eee7207a06ea8e96c39Vendor (CNA)
Linux Linuxf632987306bce9242cdfcf911ee0b2c9455e05a3Vendor (CNA)
azl3 kernel 6.6.134.1-2 on Azure Linux 3.06.6.137.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.12.85-1 · Debian:13Package 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

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.

References

Show all references (5 more)

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

All records