{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "aef4dfa790b22d8052cfb78044eadbe03c876c39"
            },
            {
              "fixed": "65c3939656fd7848e9274faa07c26748b5bf049c"
            },
            {
              "fixed": "0253073fb7d79a2dd2eae9581ea16db2aef395a6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90210.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix UAF in bpf_trampoline_multi_attach_free on update failure\n\nWhen bpf_trampoline_update() fails before modify_fentry_multi()/\nunregister_fentry_multi() is called, cur_image is unchanged\n(cur_image == old_image) and ftrace still calls into it.  Freeing\nold_image in that case causes a UAF.\n\nOnly free old_image when it differs from cur_image.",
  "id": "CVE-2026-90210",
  "modified": "2026-09-19T03:30:38.042218031Z",
  "published": "2026-09-17T16:07:24.772Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0253073fb7d79a2dd2eae9581ea16db2aef395a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65c3939656fd7848e9274faa07c26748b5bf049c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90210.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90210"
    },
    {
      "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: Fix UAF in bpf_trampoline_multi_attach_free on update failure"
}