serial: ma35d1: Fix clock reference leak in ma35d1serial_probe()
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, ma35d1serial_probe() obtains a clock with of_clk_get() but never releases the reference with clk_put(). The leak occurs on the probe error paths and when the port is removed. Red Hat rates it Low, and it is not listed in CISA KEV.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
Description from the CNA
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().
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Update the Linux kernel to a fixed release: 6.6.160, 6.12.113, 6.18.56, 7.2.10 or 7.3. The fix releases the clock reference on the error paths and in ma35d1serial_remove().
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
- Fix · CNA Linux (Linux) Fixed in 6.6.160, 6.12.113, 6.18.56, 7.2.10, 7.3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-18 Threatist record created from CVE-2026-98746
- 2026-10-18 Alias added: GHSA-74wj-7f7x-fq68
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/Linux@3cdad0c541f899bd9a109b7dc43a1bc76123bc84, Linux/[email protected] · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-23 Affected versions changed · Red Hat
- 2026-10-23 CVSS score added · Red Hat
- 2026-11-07 Affected versions changed · Red Hat
References
Other 5
- https://git.kernel.org/stable/c/3cdad0c541f899bd9a109b7dc43a1bc76123bc84
- https://git.kernel.org/stable/c/547c742f3b4acd4634eec47e9bff8731b55059a0
- https://git.kernel.org/stable/c/d8233d6b391b4cd87df6e89056c21496df7a3012
- https://git.kernel.org/stable/c/1b303d383089aae7f20ad19fee15690486b935cb
- https://git.kernel.org/stable/c/98401cf912fe8a081ef8e500c421b6d957b55a99
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Sources
- CVE-2026-98746 · CVE Program
- CVE-2026-98746 · NVD
- FIRST EPSS
- GHSA-74wj-7f7x-fq68 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98746 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences