VulnerabilityPublished 6 May 2026Updated 6 Nov 2026

CVE-2026-43143: Linux kernel · mfd: core: Add locking around 'mfd_of_node_list

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e2e7c275f557e2b75e3128f4818063798248774c : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:04 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in e2e7c275f557e2b75e3128f4818063798248774c, dcfa679bba02412f2087be21cf06ae88b1f4e0ef, db131ef9d8980cf60dcac8cf94c036eccf75e5d0 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 466a62d7642f02f36d37d9b30c19a725538a01ca, < e2e7c275f557e2b75e3128f4818063798248774c	Fixed in e2e7c275f557e2b75e3128f4818063798248774c
LinuxLinux	Affected ≥ 466a62d7642f02f36d37d9b30c19a725538a01ca, < dcfa679bba02412f2087be21cf06ae88b1f4e0ef	Fixed in dcfa679bba02412f2087be21cf06ae88b1f4e0ef
LinuxLinux	Affected ≥ 466a62d7642f02f36d37d9b30c19a725538a01ca, < db131ef9d8980cf60dcac8cf94c036eccf75e5d0	Fixed in db131ef9d8980cf60dcac8cf94c036eccf75e5d0
LinuxLinux	Affected ≥ 466a62d7642f02f36d37d9b30c19a725538a01ca, < 45341856ecda1d56689451abd5cf1d1aa57dbe47	Fixed in 45341856ecda1d56689451abd5cf1d1aa57dbe47
LinuxLinux	Affected ≥ 466a62d7642f02f36d37d9b30c19a725538a01ca, < 20117c92bcf9c11afd64d7481d8f94fdf410726e	Fixed in 20117c92bcf9c11afd64d7481d8f94fdf410726e
LinuxLinux	Affected ≥ 466a62d7642f02f36d37d9b30c19a725538a01ca, < 9b02e3fec3a7fcb990b4d3bd3b13d7edf123dca6	Fixed in 9b02e3fec3a7fcb990b4d3bd3b13d7edf123dca6

AI-suggested

A fix has been implemented and is available in the Linux kernel source (commits identified by hashes). Users should update to the fixed kernel versions that include these patches to prevent potential crashes related to this issue.

Description

A concurrency vulnerability in the Linux kernel's multi-function device (mfd) core was fixed by adding mutex locking around the 'mfd_of_node_list'. This prevents unsafe manipulation of the list that could lead to kernel crashes.

Impact

Without proper locking, concurrent access to 'mfd_of_node_list' could cause kernel instability or crashes. This affects system reliability but no direct exploitation or privilege escalation is indicated in the available data.

Summary

The Linux kernel contained a vulnerability in the mfd core subsystem where the 'mfd_of_node_list' was accessed and modified without proper mutual exclusion. This lack of locking could cause unsafe concurrent access, potentially leading to kernel crashes. The issue was resolved by introducing a mutex to protect all accesses and modifications to this list, ensuring thread safety.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Nov 2026, 16:03 UTC

Technical details

References

Community reviews

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