ARM: 9484/1: enable interrupts when unhandled user faults are triggered

{
  "id": "2cd2816e1ff1e2d351c47374038521bc9cfb5b867e10da836b0b95afcdf7972f",
  "url": "https://osv.dev/vulnerability/CVE-2026-90304",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ARM: 9484/1: enable interrupts when unhandled user faults are triggered",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ARM: 9484/1: enable interrupts when unhandled user faults are triggered PREEMPT_RT requires interrupts to be enabled when sending signals. When do_DataAbort()/do_PrefetchAbort() triggers unhandled user faults, that is `inf->fn()` return a non-zero value, and the interrupts are not enabled within the hook function, force_sig_fault() will be called with interrupts disabled. This can be triggered by user programs executing the bkpt instruction, with kernel config CONFIG_PERF_EVENTS=n. Enable interrupts in do_DataAbort()/do_PrefetchAbort() when unhandled user faults are triggered to fix the issue.",
    "evidence": "osv:CVE-2026-90304",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-90304",
      "aliases": [
        "CVE-2026-90304"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c6e61c06d6061750597e79c598acb5dead44c35b"
                },
                {
                  "fixed": "8d7cbc6df9632d334b21c4be66ccdde76a08fb13"
                },
                {
                  "fixed": "e79ca91165d4fd18549c536abdb86101e889052f"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90304.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90304.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.954777705Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/8d7cbc6df9632d334b21c4be66ccdde76a08fb13",
        "https://git.kernel.org/stable/c/e79ca91165d4fd18549c536abdb86101e889052f",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90304.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90304",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90304.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90304",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505403,
  "published_at": "2026-09-17T16:08:27.095+00:00"
}