{"api_version":"1","generated_at":"2026-05-11T07:02:25+00:00","cve":"CVE-2026-43459","urls":{"html":"https://cve.report/CVE-2026-43459","api":"https://cve.report/api/cve/CVE-2026-43459.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43459","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43459"},"summary":{"title":"ASoC: soc-core: flush delayed work before removing DAIs and widgets","description":"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).","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 15:16:58","updated_at":"2026-05-08 15:16:58"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b","name":"https://git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c","name":"https://git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb","name":"https://git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007","name":"https://git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd","name":"https://git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a","name":"https://git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8","name":"https://git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf","name":"https://git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43459","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43459","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 bf80a89da97285d9b877e0c6995e870d46b8025c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 3887e514978d28216246360b46a9cb534969eb5a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 231568afbc0cd25b8fb2a94ebf9738eabe1cf007 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 317a9298c54bb00319da73e5a7179f00e67fcbdf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 eab71e11ce2447c1e01809cbc11eab4234cf8dc8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 7d33e6140945482a07f8089ee86e13e02553ffdb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 c054f0607c8bb1b1aa529bc109e4149298a1cccd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e894efef9ac7c10b7727798dcc711cccf07569f9 95bc5c225513fc3c4ce169563fb5e3929fbb938b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.20","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.253 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.78 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.19 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.9 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43459","cve":"CVE-2026-43459","epss":"0.000240000","percentile":"0.070400000","score_date":"2026-05-10","updated_at":"2026-05-11 00:14:41"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/soc/soc-core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bf80a89da97285d9b877e0c6995e870d46b8025c","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"3887e514978d28216246360b46a9cb534969eb5a","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"231568afbc0cd25b8fb2a94ebf9738eabe1cf007","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"317a9298c54bb00319da73e5a7179f00e67fcbdf","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"eab71e11ce2447c1e01809cbc11eab4234cf8dc8","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"7d33e6140945482a07f8089ee86e13e02553ffdb","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"c054f0607c8bb1b1aa529bc109e4149298a1cccd","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"},{"lessThan":"95bc5c225513fc3c4ce169563fb5e3929fbb938b","status":"affected","version":"e894efef9ac7c10b7727798dcc711cccf07569f9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/soc/soc-core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.20"},{"lessThan":"4.20","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.19","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.78","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.19","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.9","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"4.20","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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)."}],"providerMetadata":{"dateUpdated":"2026-05-08T14:22:22.651Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c"},{"url":"https://git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a"},{"url":"https://git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007"},{"url":"https://git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf"},{"url":"https://git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8"},{"url":"https://git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb"},{"url":"https://git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd"},{"url":"https://git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b"}],"title":"ASoC: soc-core: flush delayed work before removing DAIs and widgets","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43459","datePublished":"2026-05-08T14:22:22.651Z","dateReserved":"2026-05-01T14:12:56.010Z","dateUpdated":"2026-05-08T14:22:22.651Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 15:16:58","lastModifiedDate":"2026-05-08 15:16:58","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43459","Ordinal":"1","Title":"ASoC: soc-core: flush delayed work before removing DAIs and widg","CVE":"CVE-2026-43459","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43459","Ordinal":"1","NoteData":"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).","Type":"Description","Title":"ASoC: soc-core: flush delayed work before removing DAIs and widg"}]}}}