CVE-2021-47659 (GCVE-0-2021-47659)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:05 – Updated: 2026-05-11 13:58
VLAI?
Title
drm/plane: Move range check for format_count earlier
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/plane: Move range check for format_count earlier While the check for format_count > 64 in __drm_universal_plane_init() shouldn't be hit (it's a WARN_ON), in its current position it will then leak the plane->format_types array and fail to call drm_mode_object_unregister() leaking the modeset identifier. Move it to the start of the function to avoid allocating those resources in the first place.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < 4ab7e453a3ee88c274cf97bee9487ab92a66d313 (git)
Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < 1e29d829ad51d1472dd035487953a6724b56fc33 (git)
Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < b5cd108143513e4498027b96ec4710702d186f11 (git)
Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < 978e3d023256bfaf34a0033d40c94e8a8e70cf3c (git)
Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < 787163d19bc3cdc6ca4b96223f62208534d1cf6b (git)
Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f (git)
Affected: e6fc3b68558e4c6d8d160b5daf2511b99afa8814 , < 4b674dd69701c2e22e8e7770c1706a69f3b17269 (git)
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Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.121 , ≤ 5.10.* (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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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.