In the Linux kernel, the following vulnerability has been resolved:

wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path

mwifiex_pcie_request_irq() registers each MSI-X vector with a per-index
dev_id (&card->msix_ctx[i]). On a request_irq() failure the cleanup loop
"for (j = 0; j < i; j++)" frees msix_entries[j].vector but passes the
failed index's &card->msix_ctx[i] as the dev_id. free_irq() matches on
(irq, dev_id), so it fails to find the action registered with
&card->msix_ctx[j]: the already-requested IRQ j is not freed (leaked) and
free_irq() warns about freeing a non-existent IRQ. Use &card->msix_ctx[j].
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4841-1 linux security update
Debian DSA Debian DSA DSA-6568-1 linux security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 16 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-772
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate


Thu, 15 Oct 2026 23:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667

Thu, 15 Oct 2026 04:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667

Wed, 14 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path mwifiex_pcie_request_irq() registers each MSI-X vector with a per-index dev_id (&card->msix_ctx[i]). On a request_irq() failure the cleanup loop "for (j = 0; j < i; j++)" frees msix_entries[j].vector but passes the failed index's &card->msix_ctx[i] as the dev_id. free_irq() matches on (irq, dev_id), so it fails to find the action registered with &card->msix_ctx[j]: the already-requested IRQ j is not freed (leaked) and free_irq() warns about freeing a non-existent IRQ. Use &card->msix_ctx[j].
Title wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-19T09:19:20.215Z

Reserved: 2026-09-25T10:25:14.348Z

Link: CVE-2026-98426

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T14:17:54.220

Modified: 2026-10-19T10:18:49.173

Link: CVE-2026-98426

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-14T00:00:00Z

Links: CVE-2026-98426 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T22:15:05Z

Weaknesses