CVE-2021-47659: drm/plane: Move range check for format_count earlier
Vulnerability summary
CVE-2021-47659 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.9% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 26-02-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.27% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu112 products
- linuxAll versions (No fix recorded) | < 5.4.0-126.142 | < 5.15.0-47.51
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1085.92 | < 5.15.0-1019.23
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < 4ab7e453a3ee88c274cf97bee9487ab92a66d313 | ≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < 1e29d829ad51d1472dd035487953a6724b56fc33 | ≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < b5cd108143513e4498027b96ec4710702d186f11 | ≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < 978e3d023256bfaf34a0033d40c94e8a8e70cf3c | ≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < 787163d19bc3cdc6ca4b96223f62208534d1cf6b | ≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f | ≥ e6fc3b68558e4c6d8d160b5daf2511b99afa8814, < 4b674dd69701c2e22e8e7770c1706a69f3b17269 | 4.14
- linux_kernel≥ 4.14, < 4.19.247 | ≥ 4.20, < 5.4.198 | ≥ 5.5, < 5.10.121 | ≥ 5.11, < 5.15.46 | ≥ 5.16, < 5.17.14 | ≥ 5.18, < 5.18.3
Debian1 product
- linux< 5.18.5-1
3 vendors · 115 products
