irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback

{
  "id": "351ab43dfda9e3563a24a658b804ee5905178bc9f0045f69f400333e6ecbbd00",
  "url": "https://osv.dev/vulnerability/CVE-2026-90123",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback The interrupt core calls the irq_domain_activate() callback from __setup_irq() with desc->lock held and interrupts disabled. Both aspeed_intc1_irq_domain_activate() and aspeed_intc0_resolve_route() test a compatible string with fwnode_device_is_compatible(). fwnode_device_is_compatible() invokes fwnode_property_match_string(), which allocates with GFP_KERNEL. That's obviously not possible with interrupts disabled and a raw spinlock held. Both call sites are only ever handed OF nodes, so use of_device_is_compatible() instead: it walks the property in place and does not allocate.",
    "evidence": "osv:CVE-2026-90123",
    "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-2026-90123",
      "aliases": [
        "CVE-2026-90123"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "07825e41519abb8ac13d6d1c553af47f57775f6b"
                },
                {
                  "fixed": "f2f0da11648616e47419dca93610f6c0d70ec00b"
                },
                {
                  "fixed": "b76eee9c2157223aa4aac42ceebb563288e078aa"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90123.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.2.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90123.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.238318885Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/b76eee9c2157223aa4aac42ceebb563288e078aa",
        "https://git.kernel.org/stable/c/f2f0da11648616e47419dca93610f6c0d70ec00b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90123.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90123",
        "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-2026-90123.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90123",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496307,
  "published_at": "2026-09-17T16:06:26.567+00:00"
}