{
  "cveId": "CVE-2026-89592",
  "url": "https://patchblox.com/security/cve/CVE-2026-89592",
  "summary": "CVE-2026-89592 is fixed in linux on 1 platform by DEBIAN-CVE-2026-89592 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  accel/rocket: fix NULL dereference and integer o...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  accel/rocket: fix NULL dereference and integer overflow in rocket_job_push()  rocket_job_push() allocates a temporary array to hold all input and output GEM object pointers:      bos = kvmalloc_array(job-\u003Ein_bo_count \u002B job-\u003Eout_bo_count,                          sizeof(void *), GFP_KERNEL);     memcpy(bos, job-\u003Ein_bos, job-\u003Ein_bo_count * sizeof(void *));     memcpy(\u0026bos[job-\u003Ein_bo_count], job-\u003Eout_bos, ...);  Two bugs exist:  1. Missing NULL check: if kvmalloc_array() fails, bos is NULL and    the subsequent memcpy() dereferences it, causing a kernel NULL    pointer dereference.  2. Integer overflow: in_bo_count and out_bo_count are both u32, set    directly from userspace-supplied in_bo_handle_count and    out_bo_handle_count with no prior validation. Their sum is computed    in u32 arithmetic and can wrap to a smaller value, causing the    allocation count passed to kvmalloc_array() to be smaller than    intended. Subsequent uses still operate on the original counts when    copying and locking objects, which may lead to out-of-bounds accesses    on the temporary array.  Fix by using check_add_overflow() to detect count overflow before the allocation, and adding a NULL check on the allocation result.",
  "published": "2026-09-11T20:19:43Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.1078,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89592",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89592",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}