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Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-46187: wifi: rsi: fix kthread lifetime race between self-exit and external-stop

Noroxi assessment

Priority: Monitor (action score 18/100)

  • 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: 0.09% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 16d9f674c619838bdeae42abc0929c9c5477ea1f, 3.19, 4.10; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 16d9f674c619838bdeae42abc0929c9c5477ea1f, 3.19, 4.10; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1 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: rsi: fix kthread lifetime race between self-exit and external-stop RSI driver use both self-exit(kthread_complete_and_exit) and external-stop (kthread_stop) when killing a kthread. Generally, kthread_stop() is called first, and in this case, no particular issues occur. However, in rare instances where kthread_complete_and_exit() is called first and then kthread_stop() is called, a UAF occurs because the kthread object, which has already exited and been freed, is accessed again. Therefore, to prevent this with minimal modification, you must remove kthread_stop() and change the code to wait until the self-exit operation is completed.

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
May 28, 2026
Updated
Oct 15, 2026
EPSS
0.0% · 0th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.0%

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

  • 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

Affected versions

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

  • linux linux kernel3.18.139 and later · before 3.19
  • linux linux kernel4.4.179 and later · before 4.5
  • linux linux kernel4.9.170 and later · before 4.10
  • linux linux kernel4.14.113 and later · before 4.15
  • linux linux kernel4.19.36 and later · before 5.10.258
  • linux linux kernel5.11 and later · before 5.15.209
  • linux linux kernel5.16 and later · before 6.1.175
  • linux linux kernel6.2 and later · before 6.6.140
  • linux linux kernel6.7 and later · before 6.12.88
  • linux linux kernel6.13 and later · before 6.18.30
  • linux linux kernel6.19 and later · before 7.0.7
  • linux linux kernel7.1

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

    • d8f70ad66032363e3edceee81a7be2aaccb2d7f5, ec759c0015fb7d4f5c7cb5711d2c8905724c7983, c8ed05b1d8520f40395916438da9b38ce937a896, ad78e2e057ab8d914a2b5e3e6acf29c3c8a428a3, de1fd69b6541ff61177114d63af7ea719c426cf0, 4.20affected
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 4ac3095da22fc50e51ec10c3b8323c21ab3e441aaffected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 9dfe8a4458a063c6433526bc59112a169eee1aa3affected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 4f697813162d5f9151726a6d2bee82bffe4b0256affected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 95fcb436586dc3c2983537d557ac05bbc6a027f3affected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 16d9f674c619838bdeae42abc0929c9c5477ea1faffected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 4f9a4ae8d2c198f01611ea376034c326ef43ab56affected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before 4f4c9b13c485abd0a2d2c97f9db339d1dd8e147faffected · git
    • 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and later · before db57a1aa54ff68669781976e4edb045e09e2b65baffected · git
    • 3.18.139 and later · before 3.19affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.88-16.12.88-1
Debian:14linuxbefore 7.0.7-17.0.7-1

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-2026-46181May 28, 2026 · RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()
    31Monitor
  • ← EarlierCVE-2026-46185May 28, 2026 · smb/client: fix out-of-bounds read in symlink_data()
    36Monitor
  • Later →CVE-2026-46190May 28, 2026 · mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()
    28Monitor

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 Linux16d9f674c619838bdeae42abc0929c9c5477ea1fVendor (CNA)
Linux Linux3.19Vendor (CNA)
Linux Linux4.10Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux4.5Vendor (CNA)
Linux Linux4ac3095da22fc50e51ec10c3b8323c21ab3e441aVendor (CNA)
Linux Linux4f4c9b13c485abd0a2d2c97f9db339d1dd8e147fVendor (CNA)
Linux Linux4f697813162d5f9151726a6d2bee82bffe4b0256Vendor (CNA)
Linux Linux4f9a4ae8d2c198f01611ea376034c326ef43ab56Vendor (CNA)
Linux Linux95fcb436586dc3c2983537d557ac05bbc6a027f3Vendor (CNA)
Linux Linux9dfe8a4458a063c6433526bc59112a169eee1aa3Vendor (CNA)
Linux Linuxdb57a1aa54ff68669781976e4edb045e09e2b65bVendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.141.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.176-1 · 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).

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

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:H/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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (8 more)

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

All records