Runtime PM reference leak in Linux kernel wlcore driver
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
The Linux kernel from 4.19 has a flaw in the wlcore Wi-Fi driver where wlcore_regdomain_config keeps a runtime PM reference when the regulatory-domain command fails. The function queues recovery and returns without releasing that reference, so the success and failure paths are unbalanced.
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: wifi: wlcore: release runtime PM ref on regdomain config failure wlcore_regdomain_config() gets a runtime PM reference before sending the regulatory-domain command. When wlcore_cmd_regdomain_config_locked() fails, the function queues recovery and returns without dropping that reference. Release the reference after handling the command result so both success and failure paths balance the preceding pm_runtime_resume_and_get(). The recovery worker takes a separate runtime PM reference and cannot release the reference held here.
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 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3, depending on the stable branch in use. The sources do not list a vendor advisory for this fix.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 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
- 2026-10-06 Threatist record created from CVE-2026-98191
- 2026-10-06 Alias added: GHSA-gpvf-h969-vp49
- 2026-10-09 Affected versions changed · Red Hat
- 2026-10-09 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/85ec6c451fe681ac3135dfa43a519f1404ae63ad
- https://git.kernel.org/stable/c/3fbaae01bb7847d8b0124a8bbdb3af865e388d53
- https://git.kernel.org/stable/c/c02352e2b5a241c8da89b5f5f1a0ae4d403120ed
- https://git.kernel.org/stable/c/05b5e297bbf46f92c80da4c2ebe67828ca0d0247
- https://git.kernel.org/stable/c/18eb148105f1af9163f5e9758f0a7bc6ab042423
- https://git.kernel.org/stable/c/7f1f25b2db14683ab75d0d22c00d6a75ba988b83
- https://git.kernel.org/stable/c/a6bb6ad517a0d4db33a0cac9448e3ae9f4008fb4
- https://git.kernel.org/stable/c/8a1f3cf89ddcc700e25afe42cfad333059adcc94
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- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-98191 · CVE Program
- CVE-2026-98191 · NVD
- FIRST EPSS
- GHSA-gpvf-h969-vp49 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98191 · Red Hat security data · CC BY 4.0
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