{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0810d5ad88a18f1e6d549853a388ad0316f74e36"
            },
            {
              "fixed": "c1a5bf1b6e1d5944183dcef3844a18c17219af4d"
            },
            {
              "fixed": "dfff90a6eb2258e3b867994ae17af4a7ba3504d2"
            },
            {
              "fixed": "a85402bff218f2b8f0d806e46c16c2f3d49cdda7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89592.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix NULL dereference and integer overflow in rocket_job_push()\n\nrocket_job_push() allocates a temporary array to hold all input and\noutput GEM object pointers:\n\n    bos = kvmalloc_array(job-\u003ein_bo_count + job-\u003eout_bo_count,\n                         sizeof(void *), GFP_KERNEL);\n    memcpy(bos, job-\u003ein_bos, job-\u003ein_bo_count * sizeof(void *));\n    memcpy(\u0026bos[job-\u003ein_bo_count], job-\u003eout_bos, ...);\n\nTwo bugs exist:\n\n1. Missing NULL check: if kvmalloc_array() fails, bos is NULL and\n   the subsequent memcpy() dereferences it, causing a kernel NULL\n   pointer dereference.\n\n2. Integer overflow: in_bo_count and out_bo_count are both u32, set\n   directly from userspace-supplied in_bo_handle_count and\n   out_bo_handle_count with no prior validation. Their sum is computed\n   in u32 arithmetic and can wrap to a smaller value, causing the\n   allocation count passed to kvmalloc_array() to be smaller than\n   intended. Subsequent uses still operate on the original counts when\n   copying and locking objects, which may lead to out-of-bounds accesses\n   on the temporary array.\n\nFix by using check_add_overflow() to detect count overflow before the\nallocation, and adding a NULL check on the allocation result.",
  "id": "CVE-2026-89592",
  "modified": "2026-09-13T03:30:31.149461807Z",
  "published": "2026-09-11T19:44:55.813Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a85402bff218f2b8f0d806e46c16c2f3d49cdda7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1a5bf1b6e1d5944183dcef3844a18c17219af4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfff90a6eb2258e3b867994ae17af4a7ba3504d2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89592.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89592"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "accel/rocket: fix NULL dereference and integer overflow in rocket_job_push()"
}