{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "282de143ead96a5d53331e946f31c977b4610a74"
            },
            {
              "fixed": "19d5566b84ca1af0256d0d0003e1a081580c3ba3"
            },
            {
              "fixed": "ac65c710cc643cbc52b899627577357867249530"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93144.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject writes through untrusted BTF pointers\n\ncheck_ptr_to_btf_access() lets program-type btf_struct_access callbacks\nvalidate writes before the default BTF access path rejects non-read\naccesses. That bypasses the read-only policy for untrusted BTF pointers\ncreated by helpers such as bpf_rdonly_cast().\n\nReject non-read accesses through PTR_UNTRUSTED BTF pointers at the\ncommon entry point, before the callback branch to handle all cases.",
  "id": "CVE-2026-93144",
  "modified": "2026-09-19T03:30:40.073321455Z",
  "published": "2026-09-17T16:11:42.757Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19d5566b84ca1af0256d0d0003e1a081580c3ba3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac65c710cc643cbc52b899627577357867249530"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93144.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93144"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "bpf: Reject writes through untrusted BTF pointers"
}