{
  "cveId": "CVE-2026-98094",
  "url": "https://patchblox.com/security/cve/CVE-2026-98094",
  "summary": "CVE-2026-98094 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98094, released September 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "staging: fbtft: make dirty_lock IRQ-safe",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  staging: fbtft: make dirty_lock IRQ-safe  fbtft_mkdirty() can be reached from the fbcon rendering path while processing printk() in hardirq context. Meanwhile, dirty_lock is also taken by fbtft_deferred_io() in workqueue context with local interrupts enabled.  Lockdep reports a possible IRQ lock inversion involving dirty_lock and console_owner. A hardirq can interrupt a CPU holding dirty_lock and enter the console rendering path, which can attempt to acquire dirty_lock again.  The following lockdep report was observed on an RK3566 system with CONFIG_PROVE_LOCKING enabled:    WARNING: possible irq lock inversion dependency detected   swapper/2/0 just changed the state of lock:   (console_owner){-...}-{0:0}   but this lock took another, HARDIRQ-unsafe lock in the past:   (\u0026par-\u003Edirty_lock){\u002B.\u002B.}-{2:2}    CPU0                    CPU1   ----                    ----   lock(\u0026par-\u003Edirty_lock);                          local_irq_disable();                          lock(console_owner);                          lock(\u0026par-\u003Edirty_lock);   \u003CInterrupt\u003E     lock(console_owner);    *** DEADLOCK ***  Use spin_lock_irqsave() for fbtft_mkdirty() and spin_lock_irq() for fbtft_deferred_io(). They only access the dirty line range, so the IRQ-off regions remain short.",
  "published": "2026-09-25T11:17:39Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00095,
  "epssPercentile": 0.00595,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98094",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-98094",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98094",
      "released": "2026-09-29T20:26:41Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-98094",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98094",
      "released": "2026-09-29T20:26:41Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.7-1",
      "fix": "DEBIAN-CVE-2026-98094",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98094",
      "released": "2026-09-29T20:26:41Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-98094",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98094",
      "released": "2026-09-29T20:26:41Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}