Vulnerability-Lookup

FKIE_CVE-2026-43459

Vulnerability from fkie_nvd - Published: 2026-05-08 15:16 - Updated: 2026-05-21 16:45

Severity

7.3 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Summary

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).

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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CVE-2026-43459 (GCVE-0-2026-43459)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24

Title

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

Summary

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/bf80a89da97285d9b…
https://git.kernel.org/stable/c/3887e514978d28216…
https://git.kernel.org/stable/c/231568afbc0cd25b8…
https://git.kernel.org/stable/c/317a9298c54bb0031…
https://git.kernel.org/stable/c/eab71e11ce2447c1e…
https://git.kernel.org/stable/c/7d33e6140945482a0…
https://git.kernel.org/stable/c/c054f0607c8bb1b1a…
https://git.kernel.org/stable/c/95bc5c225513fc3c4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < bf80a89da97285d9b877e0c6995e870d46b8025c (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < 3887e514978d28216246360b46a9cb534969eb5a (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < 231568afbc0cd25b8fb2a94ebf9738eabe1cf007 (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < 317a9298c54bb00319da73e5a7179f00e67fcbdf (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < eab71e11ce2447c1e01809cbc11eab4234cf8dc8 (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < 7d33e6140945482a07f8089ee86e13e02553ffdb (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < c054f0607c8bb1b1aa529bc109e4149298a1cccd (git) Affected: e894efef9ac7c10b7727798dcc711cccf07569f9 , < 95bc5c225513fc3c4ce169563fb5e3929fbb938b (git)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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      "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": "2026-05-11T22:24:59.782Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-43459

CVE-2026-43459 (GCVE-0-2026-43459)

Tags

Sightings

Nomenclature