ASoC: cs35l33: drain threaded IRQ before runtime suspend

{
  "id": "1e2ad1141fb31963ced10023766fddfbb4c671a94fec7b2461fbb6c9df2780eb",
  "url": "https://osv.dev/vulnerability/CVE-2026-89946",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ASoC: cs35l33: drain threaded IRQ before runtime suspend",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ASoC: cs35l33: drain threaded IRQ before runtime suspend cs35l33_runtime_suspend() currently switches the codec into regcache_cache_only(true) and powers it down without first quiescing the threaded IRQ registered by devm_request_threaded_irq(). That leaves a window where cs35l33_irq_thread() can still run after suspend has closed off live register access. A running system can reach this during runtime PM while the driver still has critical fault IRQs unmasked. If the threaded handler runs in that window, it reads volatile INT_STATUS_1/2 after cache_only has been enabled, ignores the regmap_read() failures, and can still drive the AMP_SHORT_RLS, CAL_ERR_RLS, OTE_RLS, and OTW_RLS release paths. Use disable_irq() before entering cache_only/power-off so any in-flight threaded handler is drained and no new IRQ thread can run during the suspended state. Re-enable the IRQ only after runtime_resume() has restored live register access with regcache_sync(). Since probe only warns if devm_request_threaded_irq() fails, track whether the IRQ was actually installed before disabling or re-enabling it.",
    "evidence": "osv:CVE-2026-89946",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.270",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.221",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.188",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-89946",
      "aliases": [
        "CVE-2026-89946"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8"
                },
                {
                  "fixed": "d07799302721d381aef834fac8a11d196894eccb"
                },
                {
                  "fixed": "5b5311427e54d9c0d07178ee42df68ba44c2d5ca"
                },
                {
                  "fixed": "a04722542c76ce861031384480825afded8cc4f4"
                },
                {
                  "fixed": "614c2616ea677abfbed917a92bdc5141efff3536"
                },
                {
                  "fixed": "6ae98918240585eb2ad32b097c4810f4e2dabe88"
                },
                {
                  "fixed": "6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2"
                },
                {
                  "fixed": "84cf6acd01a1ec8f30276578a039216327af782e"
                },
                {
                  "fixed": "e074c12c428c633e079154301207a6079a208583"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89946.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.8.0"
                },
                {
                  "fixed": "5.10.270"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.221"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.188"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.157"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.110"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.51"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89946.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.975643878Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5b5311427e54d9c0d07178ee42df68ba44c2d5ca",
        "https://git.kernel.org/stable/c/614c2616ea677abfbed917a92bdc5141efff3536",
        "https://git.kernel.org/stable/c/6ae98918240585eb2ad32b097c4810f4e2dabe88",
        "https://git.kernel.org/stable/c/6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2",
        "https://git.kernel.org/stable/c/84cf6acd01a1ec8f30276578a039216327af782e",
        "https://git.kernel.org/stable/c/a04722542c76ce861031384480825afded8cc4f4",
        "https://git.kernel.org/stable/c/d07799302721d381aef834fac8a11d196894eccb",
        "https://git.kernel.org/stable/c/e074c12c428c633e079154301207a6079a208583",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89946.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89946",
        "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/2026/89xxx/CVE-2026-89946.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89946",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521880,
  "published_at": "2026-09-16T10:32:32.675+00:00"
}