CVE-2026-99050

Что произошло

In the Linux kernel, the following vulnerability has been resolved: gpio: mpsse: fix race when arming the IRQ poll worker gpio_mpsse_irq_enable() arms the poll worker before publishing it: schedule_work() runs before the worker is added to priv->workers. If gpio_mpsse_disconnect() walks the list in that window it misses the worker, and once disconnect returns, the USB core frees mpsse_priv while the orphaned gpio_mpsse_poll() work keeps accessing it, causing a use-after-free. Fix this by publishing and arming the worker in one irq_spin critical section. Teardown walks the same list under irq_spin, so a worker found on the list is guaranteed to be armed, and cancel_work_sync() handles it whether it is queued or running. A worker armed after the disconnect walk would still be missed, so also set a new priv->dying flag under irq_spin before the teardown walk, and check it in the same critical section, freeing it via kfree_rcu() instead when the device is going away, since kfree() would be called with the IRQ core's raw spinlock held and may sleep on PREEMPT_RT. schedule_work() is safe to call with irq_spin held, and the next probe gets a fresh mpsse_priv, so the flag never needs to be cleared. This issue was found by an in-house static analysis tool.

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "472d900c8bcac301ae0e40fdca7db799bd989ff5",
  "lessThan": "76390ac0bca7e5058b7482eb4d951c3bda5df812",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271",
  "lessThan": "c0071ee496e1228976c72b096f529503222708a0",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271",
  "lessThan": "7efa1a1953cd6b20b23a3524d5b4b81789c6ef25",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "6.18.6",
  "lessThan": "6.18.57",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.19"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "6.19",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "6.18.57",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.11",
  "versionType": "semver",
  "lessThanOrEqual": "7.2.*"
}

{
  "status": "unaffected",
  "version": "7.3",
  "versionType": "original_commit_for_fix",
  "lessThanOrEqual": "*"
}

CVSS: оценки и векторы

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Источники и ссылки

{
  "cwes": [],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:22.707754+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T20:53:07.107498+00:00"
  },
  "scores": [
    "cve"
  ],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T20:53:07.107498+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T20:53:07.107498+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:22.707754+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T20:53:07.107498+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены02.11.2026, 00:13
2. Данные обновлены31.10.2026, 12:00
3. Данные обновлены29.10.2026, 12:47
4. Опубликована28.10.2026, 23:53

Личная заметка и статус

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