ASoC: soc-core: flush delayed work before removing DAIs and widgets

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-43459
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:58 UTC
Updated2026-05-08 15:16:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ASoC: soc-core: flush delayed work before removing DAIs and widgets When a sound card is unbound while a PCM stream is open, a use-after-free can occur in snd_soc_dapm_stream_event(), called from the close_delayed_work workqueue handler. During unbind, snd_soc_unbind_card() flushes delayed work and then calls soc_cleanup_card_resources(). Inside cleanup, snd_card_disconnect_sync() releases all PCM file descriptors, and the resulting PCM close path can call snd_soc_dapm_stream_stop() which schedules new delayed work with a pmdown_time timer delay. Since this happens after the flush in snd_soc_unbind_card(), the new work is not caught. soc_remove_link_components() then frees DAPM widgets before this work fires, leading to the use-after-free. The existing flush in soc_free_pcm_runtime() also cannot help as it runs after soc_remove_link_components() has already freed the widgets. Add a flush in soc_cleanup_card_resources() after snd_card_disconnect_sync() (after which no new PCM closes can schedule further delayed work) and before soc_remove_link_dais() and soc_remove_link_components() (which tear down the structures the delayed work accesses).

Risk And Classification

EPSS: 0.000240000 probability, percentile 0.070400000 (date 2026-05-10)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 bf80a89da97285d9b877e0c6995e870d46b8025c git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 3887e514978d28216246360b46a9cb534969eb5a git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 231568afbc0cd25b8fb2a94ebf9738eabe1cf007 git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 317a9298c54bb00319da73e5a7179f00e67fcbdf git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 eab71e11ce2447c1e01809cbc11eab4234cf8dc8 git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 7d33e6140945482a07f8089ee86e13e02553ffdb git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 c054f0607c8bb1b1aa529bc109e4149298a1cccd git Not specified
CNA Linux Linux affected e894efef9ac7c10b7727798dcc711cccf07569f9 95bc5c225513fc3c4ce169563fb5e3929fbb938b git Not specified
CNA Linux Linux affected 4.20 Not specified
CNA Linux Linux unaffected 4.20 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.167 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.130 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report