VulnerabilityPublished 18 Oct 2026Updated 21 Oct 2026

CVE-2026-98746: Linux kernel · serial: ma35d1: Fix clock reference leak in ma35d1serial_probe()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in d8233d6b391b4cd87df6e89056c21496df7a3012 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d8233d6b391b4cd87df6e89056c21496df7a3012, 98401cf912fe8a081ef8e500c421b6d957b55a99, 547c742f3b4acd4634eec47e9bff8731b55059a0 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 ≥ 930cbf92db0184e327293d5e7089be0b08d46371, < d8233d6b391b4cd87df6e89056c21496df7a3012	Fixed in d8233d6b391b4cd87df6e89056c21496df7a3012
LinuxLinux	Affected ≥ 930cbf92db0184e327293d5e7089be0b08d46371, < 98401cf912fe8a081ef8e500c421b6d957b55a99	Fixed in 98401cf912fe8a081ef8e500c421b6d957b55a99
LinuxLinux	Affected ≥ 930cbf92db0184e327293d5e7089be0b08d46371, < 547c742f3b4acd4634eec47e9bff8731b55059a0	Fixed in 547c742f3b4acd4634eec47e9bff8731b55059a0
LinuxLinux	Affected ≥ 930cbf92db0184e327293d5e7089be0b08d46371, < 3cdad0c541f899bd9a109b7dc43a1bc76123bc84	Fixed in 3cdad0c541f899bd9a109b7dc43a1bc76123bc84
LinuxLinux	Affected ≥ 930cbf92db0184e327293d5e7089be0b08d46371, < 1b303d383089aae7f20ad19fee15690486b935cb	Fixed in 1b303d383089aae7f20ad19fee15690486b935cb
LinuxLinux	Affected =6.5	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: serial: ma35d1: Fix clock reference leak in ma35d1serial_probe() of_clk_get() returns a clock with a reference that has to be released with clk_put(). ma35d1serial_probe() never does that, so the reference is leaked on the probe error paths and also when the port is removed. Release it on the error paths and in ma35d1serial_remove().

References

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