{
  "cveId": "CVE-2026-23217",
  "url": "https://patchblox.com/security/cve/CVE-2026-23217",
  "summary": "CVE-2026-23217 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-23217, released February 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "riscv: trace: fix snapshot deadlock with sbi ecall",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  riscv: trace: fix snapshot deadlock with sbi ecall  If sbi_ecall.c\u0027s functions are traceable,  echo \u0022__sbi_ecall:snapshot\u0022 \u003E /sys/kernel/tracing/set_ftrace_filter  may get the kernel into a deadlock.  (Functions in sbi_ecall.c are excluded from tracing if CONFIG_RISCV_ALTERNATIVE_EARLY is set.)  __sbi_ecall triggers a snapshot of the ringbuffer. The snapshot code raises an IPI interrupt, which results in another call to __sbi_ecall and another snapshot...  All it takes to get into this endless loop is one initial __sbi_ecall. On RISC-V systems without SSTC extension, the clock events in timer-riscv.c issue periodic sbi ecalls, making the problem easy to trigger.  Always exclude the sbi_ecall.c functions from tracing to fix the potential deadlock.  sbi ecalls can easiliy be logged via trace events, excluding ecall functions from function tracing is not a big limitation.",
  "published": "2026-02-18T15:18:43Z",
  "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": 0.0014,
  "epssPercentile": 0.0341,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23217",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-23217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23217",
      "released": "2026-02-18T15:18:43Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.10-1",
      "fix": "DEBIAN-CVE-2026-23217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23217",
      "released": "2026-02-18T15:18:43Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}