Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-98426— wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： wifi: mwifiex：修正 MSI-X 错误路径中使用错误索引导致的 IRQ 泄漏问题 mwifiex_pcie_request_irq() 为每个 MSI-X 向量注册时，使用基于索引的 dev_id（即 &card->msix_ctx[i]）。当 request_irq() 失败时，清理循环“for (j = 0; j < i; j++)”会释放 msix_entries[j].vector，但错误地传入了失败索引对应的 &card->msix_ctx[i] 作为

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 99074fc1e67b374b5c72406a23ac01fed806d634< 11bc2cbb14f450eaa47cce9eb086f948ef8f4bcd affected
99074fc1e67b374b5c72406a23ac01fed806d634< 1a60cb2292194cc9eafae7ca8a8a72d37ae78d97 affected
99074fc1e67b374b5c72406a23ac01fed806d634< fcac5813f324cd07dfd36b4adf624fc70f7587d6 affected
99074fc1e67b374b5c72406a23ac01fed806d634< 2761b21cb896b1da8dd46cee5084c9032b2d7098 affected
99074fc1e67b374b5c72406a23ac01fed806d634< 5fd4cc87e6cc0839aac89c24ebe39ce262fe088f affected
99074fc1e67b374b5c72406a23ac01fed806d634< 0969c9688389f2e0f65b1a924b0dd6625a3bb776 affected
99074fc1e67b374b5c72406a23ac01fed806d634< 03d5e4776e8b71c2468c5c3c48b39202c87a8796 affected
99074fc1e67b374b5c72406a23ac01fed806d634< a3d722190cdef18da4878b5efc27c3c386dda248 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-98426

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path
Source: CVE Program / CVE List V5
Vulnerability 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].
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 99074fc1e67b374b5c72406a23ac01fed806d634 ~ 11bc2cbb14f450eaa47cce9eb086f948ef8f4bcd -
Linux Linux 4.6 -

II. Public POCs for CVE-2026-98426

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-98426

请登录查看更多情报信息。

Other References for CVE-2026-98426 (8)

Same Patch Batch · Linux · 2026-10-14 · 46 CVEs total

CVE-2026-98398 locking/lockdep: Invalidate stale class_cache entries for zapped classes
CVE-2026-98396 powerpc: Do not restore KUAP in arch_exit_to_user_mode_prepare()
CVE-2026-98393 net: ipv4: Fix UDP length overflow with PMTU discover and big MTU
CVE-2026-98391 drm/xe: Guard page-fault worker with runtime PM check
CVE-2026-98389 drm/amdgpu: skip gfx switch_power_profile during GPU reset
CVE-2026-98388 exec: do_close_on_exec() before taking exec_update_lock
CVE-2026-98387 s390/crypto: Fix skcipher_walk return code handling in aes_s390
CVE-2026-98386 scsi: qla2xxx: Use memset_io() to clear QLAFX00 request ring slot
CVE-2026-98390 x86/amd_node: Avoid divide by zero on virtualized systems
CVE-2026-98397 platform/x86: x86-android-tablets: hold device reference for secondary fwnode teardown
CVE-2026-98395 powerpc/entry: Fix irq_soft_mask corruption on replayed interrupt exit
CVE-2026-98399 s390/ipl: Fix NULL deref in dump_reipl without re-IPL parm block
CVE-2026-98400 s390/ipl: Fix NULL deref in kdump without re-IPL parm block
CVE-2026-98402 net: icmp: avoid invalid transport header access in icmp_send tracepoint
CVE-2026-98401 net: iptunnel: fix stale transport header during tunnel decapsulation
CVE-2026-98403 s390/boot: Avoid IPL parameter append past command line
CVE-2026-98404 drm/virtio: Fix a NULL vs ERR_PTR() bug in virtio_gpu_user_framebuffer_create()
CVE-2026-98405 smb: client: fix missing iov bounds check in parse_posix_sids()
CVE-2026-98406 wifi: mac80211: avoid WARN in set_bitrate_mask when sdata not in driver
CVE-2026-98408 watchdog: rzv2h: Avoid division by zero

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98426

No comments yet

Leave a comment