CVE-2021-47286 (GCVE-0-2021-47286)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:34 – Updated: 2026-05-11 13:51
VLAI
Title
bus: mhi: core: Validate channel ID when processing command completions
Summary
In the Linux kernel, the following vulnerability has been resolved: bus: mhi: core: Validate channel ID when processing command completions MHI reads the channel ID from the event ring element sent by the device which can be any value between 0 and 255. In order to prevent any out of bound accesses, add a check against the maximum number of channels supported by the controller and those channels not configured yet so as to skip processing of that event ring element.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 , < 3efec3b4b16fc7af25676a94230a8ab2a3bb867c (git)
Affected: 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 , < aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9 (git)
Affected: 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 , < 546362a9ef2ef40b57c6605f14e88ced507f8dd0 (git)
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Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.54 , ≤ 5.10.* (semver)
Unaffected: 5.13.6 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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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.

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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.