CVE-2026-98426

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

CVE-2026-98426 is fixed in 31 products on 1 platform, first by DEBIAN-CVE-2026-98426, released October 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
3.3
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0022
12th percentile

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].

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
bpftool · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-64kb · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-azure · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-default · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-default-base · sles 15.7 6.4.0-150700.53.90.1.150700.17.51.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-docs · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-livepatch-SLE15-SP7_Update_24 · sles 15.7 1-150700.15.3.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-obs-build · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-source · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-syms · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
kernel-uek · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-container · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-container · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-container-debug · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-container-debug · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-core · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-core · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-core · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-core · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-devel · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-devel · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-modules · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-modules · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-modules-extra · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-debug-modules-extra · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-devel · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-devel · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-doc · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-doc · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-modules · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-modules · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-modules-extra · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek-modules-extra · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-core · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-core · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-devel · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-devel · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-modules · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-modules · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-modules-extra · ol 8 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-uek64k-modules-extra · ol 9 0:5.15.0-326.222.4.el9uek ELSA-2026-500574 Nov 7, 2026
kernel-zfcpdump · sles 15.7 6.4.0-150700.53.90.1 SUSE-SU-2026:5091-1 Nov 7, 2026
linux · Debian 12.15 (bookworm) 6.1.190-1 DEBIAN-CVE-2026-98426 Oct 16, 2026
linux · Debian 13.5 (trixie) 6.12.113-1 DEBIAN-CVE-2026-98426 Oct 16, 2026
linux · Debian 14 7.2.8-1 DEBIAN-CVE-2026-98426 Oct 16, 2026
linux-6.12 · Debian 12.15 (bookworm) 6.12.113-1~deb12u1 DEBIAN-CVE-2026-98426 Oct 16, 2026

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