{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e894efef9ac7c10b7727798dcc711cccf07569f9"
            },
            {
              "fixed": "bf80a89da97285d9b877e0c6995e870d46b8025c"
            },
            {
              "fixed": "3887e514978d28216246360b46a9cb534969eb5a"
            },
            {
              "fixed": "231568afbc0cd25b8fb2a94ebf9738eabe1cf007"
            },
            {
              "fixed": "317a9298c54bb00319da73e5a7179f00e67fcbdf"
            },
            {
              "fixed": "eab71e11ce2447c1e01809cbc11eab4234cf8dc8"
            },
            {
              "fixed": "7d33e6140945482a07f8089ee86e13e02553ffdb"
            },
            {
              "fixed": "c054f0607c8bb1b1aa529bc109e4149298a1cccd"
            },
            {
              "fixed": "95bc5c225513fc3c4ce169563fb5e3929fbb938b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.19"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43459.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: soc-core: flush delayed work before removing DAIs and widgets\n\nWhen a sound card is unbound while a PCM stream is open, a\nuse-after-free can occur in snd_soc_dapm_stream_event(), called from\nthe close_delayed_work workqueue handler.\n\nDuring unbind, snd_soc_unbind_card() flushes delayed work and then\ncalls soc_cleanup_card_resources(). Inside cleanup,\nsnd_card_disconnect_sync() releases all PCM file descriptors, and\nthe resulting PCM close path can call snd_soc_dapm_stream_stop()\nwhich schedules new delayed work with a pmdown_time timer delay.\nSince this happens after the flush in snd_soc_unbind_card(), the\nnew work is not caught. soc_remove_link_components() then frees\nDAPM widgets before this work fires, leading to the use-after-free.\n\nThe existing flush in soc_free_pcm_runtime() also cannot help as it\nruns after soc_remove_link_components() has already freed the widgets.\n\nAdd a flush in soc_cleanup_card_resources() after\nsnd_card_disconnect_sync() (after which no new PCM closes can\nschedule further delayed work) and before soc_remove_link_dais()\nand soc_remove_link_components() (which tear down the structures the\ndelayed work accesses).",
  "id": "CVE-2026-43459",
  "modified": "2026-08-12T03:51:42.966273512Z",
  "published": "2026-05-08T14:22:22.651Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43459.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43459"
    },
    {
      "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:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ASoC: soc-core: flush delayed work before removing DAIs and widgets"
}