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CVE-2026-43459: Linux, грешка в паметта

7.3

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и след действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In 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).

Засегнати продукти

  • Linux Linux: e894efef9ac7c10b7727798dcc711cccf07569f9 преди bf80a89da97285d9b877e0c6995e870d46b8025c; e894efef9ac7c10b7727798dcc711cccf07569f9 преди 3887e514978d28216246360b46a9cb534969eb5a; e894efef9ac7c10b7727798dcc711cccf07569f9 преди 231568afbc0cd25b8fb2a94ebf9738eabe1cf007; e894efef9ac7c10b7727798dcc711cccf07569f9 преди 317a9298c54bb00319da73e5a7179f00e67fcbdf; e894efef9ac7c10b7727798dcc711cccf07569f9 преди eab71e11ce2447c1e01809cbc11eab4234cf8dc8; e894efef9ac7c10b7727798dcc711cccf07569f9 преди 7d33e6140945482a07f8089ee86e13e02553ffdb; e894efef9ac7c10b7727798dcc711cccf07569f9 преди c054f0607c8bb1b1aa529bc109e4149298a1cccd; e894efef9ac7c10b7727798dcc711cccf07569f9 преди 95bc5c225513fc3c4ce169563fb5e3929fbb938b
  • Linux Linux: 4.20; преди 4.20; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.78 до 6.12.*; 6.18.19 до 6.18.*; 6.19.9 до 6.19.*; от 7.0 нататък

Вид слабост

История

  • 8 май 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-43459: Linux, грешка в паметта | freedomonline.bg