{
  "cveId": "CVE-2026-23134",
  "url": "https://patchblox.com/security/cve/CVE-2026-23134",
  "summary": "CVE-2026-23134 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23134 (version 6.18.8-1), released February 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  slab: fix kmalloc_nolock() context check for PRE...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  slab: fix kmalloc_nolock() context check for PREEMPT_RT  On PREEMPT_RT kernels, local_lock becomes a sleeping lock. The current check in kmalloc_nolock() only verifies we\u0027re not in NMI or hard IRQ context, but misses the case where preemption is disabled.  When a BPF program runs from a tracepoint with preemption disabled (preempt_count \u003E 0), kmalloc_nolock() proceeds to call local_lock_irqsave() which attempts to acquire a sleeping lock, triggering:    BUG: sleeping function called from invalid context   in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6128   preempt_count: 2, expected: 0  Fix this by checking !preemptible() on PREEMPT_RT, which directly expresses the constraint that we cannot take a sleeping lock when preemption is disabled. This encompasses the previous checks for NMI and hard IRQ contexts while also catching cases where preemption is disabled.",
  "published": "2026-02-14T16:15:53Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00126,
  "epssPercentile": 0.02281,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.8-1",
      "fix": "DEBIAN-CVE-2026-23134",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23134",
      "released": "2026-02-14T16:15:53Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}