Answer in brief
CVE-2021-47659 records a Medium severity (CVSS 5.5) vulnerability in drm/plane: Move range check for format_count earlier. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <4ab7e453a3ee88c274cf97bee9487ab92a66d313 || >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <1e29d829ad51d1472dd035487953a6724b56fc33 || >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <b5cd108143513e4498027b96ec4710702d186f11 || >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <978e3d023256bfaf34a0033d40c94e8a8e70cf3c || >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <787163d19bc3cdc6ca4b96223f62208534d1cf6b || >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f || >=e6fc3b68558e4c6d8d160b5daf2511b99afa8814 <4b674dd69701c2e22e8e7770c1706a69f3b17269 | 4ab7e453a3ee88c274cf97bee9487ab92a66d313, 1e29d829ad51d1472dd035487953a6724b56fc33, b5cd108143513e4498027b96ec4710702d186f11, 978e3d023256bfaf34a0033d40c94e8a8e70cf3c, 787163d19bc3cdc6ca4b96223f62208534d1cf6b, ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f, 4b674dd69701c2e22e8e7770c1706a69f3b17269 |
| Linux/Linuxgeneric | 4.14 | Not reported |
Published upstream
Feb 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.