Medium Logic error

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

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.

Published May 28, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.1% (30-day exploitation probability)+0
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.11%

ahead of 1% of scored CVEs · Oct 14, 2026

Affects

Linux

Linux and 1 more

CVSS base

4.7

Medium · 2 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux, Linux Linux Kernel).
Apply the fixed version or the patch documented under Remediation.
Search available logs for exploit probes matching the vulnerability class (logic error), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 95fcb436586dc3c2983537d557ac05bbc6a027f3version 4.20≥ 4.19.36 and < 4.20≥ 4.14.113 and < 4.15≥ 4.9.170 and < 4.10≥ 4.4.179 and < 4.5≥ 3.18.139 and < 3.19version de1fd69b6541ff61177114d63af7ea719c426cf0 and 11 more version ad78e2e057ab8d914a2b5e3e6acf29c3c8a428a3version c8ed05b1d8520f40395916438da9b38ce937a896version ec759c0015fb7d4f5c7cb5711d2c8905724c7983version d8f70ad66032363e3edceee81a7be2aaccb2d7f5≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < db57a1aa54ff68669781976e4edb045e09e2b65b≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 4f9a4ae8d2c198f01611ea376034c326ef43ab56≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 16d9f674c619838bdeae42abc0929c9c5477ea1f≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 4f697813162d5f9151726a6d2bee82bffe4b0256≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 9dfe8a4458a063c6433526bc59112a169eee1aa3≥ 4c62764d0fc21a34ffc44eec1210038c3a2e4473 and < 4ac3095da22fc50e51ec10c3b8323c21ab3e441a	Vulnerable	CVE Program (cve.org) e CISA ADP
Linux	Linux Kernel	≥ 3.18.139 and < 3.19version 7.1-rc2version 7.1-rc1≥ 6.19 and < 7.0.7≥ 6.13 and < 6.18.30≥ 6.7 and < 6.12.88≥ 6.2 and < 6.6.140≥ 5.16 and < 6.1.175 and 5 more ≥ 5.11 and < 5.15.209≥ 4.19.36 and < 5.10.258≥ 4.14.113 and < 4.15≥ 4.9.170 and < 4.10≥ 4.4.179 and < 4.5	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

High

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
4.7	CVSS 3.1	Medium	1.0	3.6	nvd@nist.gov via NIST National Vulnerability Database
4.7	CVSS 3.1	Medium	—	—	GitHub, Inc. via GitHub Security Advisories

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-362 · Race Condition

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.11%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Source status changed · Analyzed → Modified
Oct 14, 2026 · NIST National Vulnerability Database
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
Fix documented
Oct 13, 2026 · NIST National Vulnerability Database
CVSS changed · 4.7
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
May 28, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 14, 2026 – Oct 15, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

11 on the record

git.kernel.org/stable/c/4f9a4ae8d2c198f01611ea376034c326ef43ab56
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/16d9f674c619838bdeae42abc0929c9c5477ea1f
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/95fcb436586dc3c2983537d557ac05bbc6a027f3
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/4f697813162d5f9151726a6d2bee82bffe4b0256
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/4ac3095da22fc50e51ec10c3b8323c21ab3e441a
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/db57a1aa54ff68669781976e4edb045e09e2b65b
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/9dfe8a4458a063c6433526bc59112a169eee1aa3
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f
Patch, NIST National Vulnerability Database
github.com/advisories/GHSA-qcf3-qg3w-g99p
GitHub Security Advisories
nvd.nist.gov/vuln/detail/CVE-2026-46187
GitHub Security Advisories
cert-portal.siemens.com/productcert/html/ssa-784472.html
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Logic error
same class

CWE-362
other pages naming this weakness

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 13h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 13h
Unknown CVE-2026-98431 RDMA/uverbs: Fix mmap_lock/disassociation_lock circular dependency 1d
Unknown CVE-2026-98430 RDMA/efa: Keep admin queues alive while IRQ is registered 1d
Unknown CVE-2026-98429 RDMA/efa: Keep EQ resources alive while IRQ is registered 1d
Unknown CVE-2026-98428 ALSA: usb: 6fire: Avoid embedded URBs 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CISA SSVC assessment.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-46187 is "wifi: rsi: fix kthread lifetime race between self-exit and external-stop", rated Medium. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.7 describes technical severity. EPSS 0.11% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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