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CVE-2026-53098 (GCVE-0-2026-53098)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-09-14 11:58
VLAI
Title
wifi: mt76: mt7915: fix use-after-free bugs in mt7915_mac_dump_work()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix use-after-free bugs in mt7915_mac_dump_work() When the mt7915 pci chip is detaching, the mt7915_crash_data is released in mt7915_coredump_unregister(). However, the work item dump_work may still be running or pending, leading to UAF bugs when the already freed crash_data is dereferenced again in mt7915_mac_dump_work(). The race condition can occur as follows: CPU 0 (removal path) | CPU 1 (workqueue) mt7915_pci_remove() | mt7915_sys_recovery_set() mt7915_unregister_device() | mt7915_reset() mt7915_coredump_unregister() | queue_work() vfree(dev->coredump.crash_data) | mt7915_mac_dump_work() | crash_data-> // UAF Fix this by ensuring dump_work is properly canceled before the crash_data is deallocated. Add cancel_work_sync() in mt7915_unregister_device() to synchronize with any pending or executing dump work.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4bf3f4755611e3ae4cca58469e3c1d73be9c8093 , < 55159f1fa30bef03e01af469823c1de103a4a884 (git)
Affected: 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 , < 6d5202409467d621b6d1dfd7fc7dadb997fe66d2 (git)
Affected: 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 , < e6856af8a22a8e2cd18241a465ed00c2301b3a5e (git)
Affected: 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 , < 6b7cbb13c838cf2a5f2e7be0e96fe15250087939 (git)
Affected: 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 , < 21ce6d867867645fff0ef657be18f61d9f39dcd8 (git)
Affected: 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 , < 1146d0946b5358fad24812bd39d68f31cd40cc34 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: fix use-after-free bugs in mt7915_mac_dump_work()\n\nWhen the mt7915 pci chip is detaching, the mt7915_crash_data is\nreleased in mt7915_coredump_unregister(). However, the work item\ndump_work may still be running or pending, leading to UAF bugs\nwhen the already freed crash_data is dereferenced again in\nmt7915_mac_dump_work().\n\nThe race condition can occur as follows:\n\nCPU 0 (removal path)               | CPU 1 (workqueue)\nmt7915_pci_remove()                | mt7915_sys_recovery_set()\n mt7915_unregister_device()        |  mt7915_reset()\n  mt7915_coredump_unregister()     |   queue_work()\n   vfree(dev-\u003ecoredump.crash_data) | mt7915_mac_dump_work()\n                                   |  crash_data-\u003e // UAF\n\nFix this by ensuring dump_work is properly canceled before\nthe crash_data is deallocated. Add cancel_work_sync() in\nmt7915_unregister_device() to synchronize with any pending\nor executing dump work."
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53098",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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