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CVE-2021-47502 (GCVE-0-2021-47502)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:01 – Updated: 2026-08-05 08:48
VLAI
Title
ASoC: codecs: wcd934x: handle channel mappping list correctly
Summary
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd934x: handle channel mappping list correctly Currently each channel is added as list to dai channel list, however there is danger of adding same channel to multiple dai channel list which endups corrupting the other list where its already added. This patch ensures that the channel is actually free before adding to the dai channel list and also ensures that the channel is on the list before deleting it. This check was missing previously, and we did not hit this issue as we were testing very simple usecases with sequence of amixer commands.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-24 19:19 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: dd9eb19b567303e4b92747dcfb5deedb182af111 , < 1089dac26c6b4b833323ae6c0ceab29fb30ede72 (git)
Affected: dd9eb19b567303e4b92747dcfb5deedb182af111 , < 339ffb5b56005582aacc860524d2d208604049d1 (git)
Affected: dd9eb19b567303e4b92747dcfb5deedb182af111 , < 23ba28616d3063bd4c4953598ed5e439ca891101 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.85 , ≤ 5.10.* (semver)
Unaffected: 5.15.8 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "42",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ASoC: codecs: wcd934x: handle channel mappping list correctly",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47502.json",
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      "current_release_date": "2026-09-13T00:01:27Z",
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      "title": "SUSE CVE CVE-2021-47502",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.