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CVE-2026-53100wifi: mt76: fix deadlock in remain-on-channel

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: fix deadlock in remain-on-channel mt76_remain_on_channel() and mt76_roc_complete() call mt76_set_channel() while already holding dev->mutex. Since mt76_set_channel() also acquires dev->mutex, this results in a deadlock. Use __mt76_set_channel() instead of mt76_set_channel(). Add cancel_delayed_work_sync() for mac_work before acquiring the mutex in mt76_remain_on_channel() to prevent a secondary deadlock with the mac_work workqueue.

Timeline

  1. ID reserved

    By Linux

  2. · 15 days later

    Published

  3. · 5 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-53100, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.12% · top 98% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected a8f424c1287cc79a06c21816658feea87dfcb83f – < 5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd
    • affected a8f424c1287cc79a06c21816658feea87dfcb83f – < 7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f
    • affected a8f424c1287cc79a06c21816658feea87dfcb83f – < 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e

  • Linux · Linux

    • affected 6.14
    • unaffected < 6.14
    • unaffected 6.18.33 – ≤ 6.18.*
    • unaffected 7.0.10 – ≤ 7.0.*
    • unaffected 7.1 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .