{
  "cveId": "CVE-2026-53173",
  "url": "https://patchblox.com/security/cve/CVE-2026-53173",
  "summary": "CVE-2026-53173 is fixed in linux on 1 platform by DEBIAN-CVE-2026-53173 (version 7.0.13-1), released June 28, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  accel/ethosu: fix OOB write in ethosu_gem_cmdstr...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  accel/ethosu: fix OOB write in ethosu_gem_cmdstream_copy_and_validate()  The command stream parsing loop increments the index variable a second time when a 64-bit command word is encountered (bit 14 set), but does not re-check the loop bound before writing the second word:      for (i = 0; i \u003C size / 4; i\u002B\u002B) {         bocmds[i] = cmds[0];         if (cmd \u0026 0x4000) {             i\u002B\u002B;             bocmds[i] = cmds[1];   /* unchecked */         }     }  The buffer bocmds is backed by a DMA allocation of exactly size bytes from drm_gem_dma_create(ddev, size), giving valid indices [0, size/4-1].  When i == size/4 - 1 on entry to an iteration and bit 14 of cmds[0] is set, bocmds[size/4-1] is written in bounds, i is then incremented to size/4, and bocmds[size/4] writes four bytes past the end of the allocation.  Userspace controls both the buffer contents and the size argument via the ioctl, making this a userspace-triggerable heap out-of-bounds write.  Fix by checking the incremented index against the buffer bound before the second write and returning -EINVAL if the buffer is too small to contain the extended command.",
  "published": "2026-06-25T09:16:34Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00165,
  "epssPercentile": 0.05763,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.13-1",
      "fix": "DEBIAN-CVE-2026-53173",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53173",
      "released": "2026-06-28T17:47:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}