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Vulnerability · Published Feb 26, 2025 · Assigned by Linux

CVE-2021-47659drm/plane: Move range check for format_count earlier

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 81.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.18.5-1DEBIAN-CVE-2021-47659
Debian:13linux5.18.5-1DEBIAN-CVE-2021-47659
Debian:14linux5.18.5-1DEBIAN-CVE-2021-47659
Ubuntu:22.04:LTSlinux5.15.0-47.51UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-aws5.15.0-1019.23UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-azure5.15.0-1019.24UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-gcp5.15.0-1017.23UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-gke5.15.0-1015.18UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1002.4UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-ibm5.15.0-1013.15UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1015.20UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-kvm5.15.0-1017.21UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-47.53UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1007.7UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-oracle5.15.0-1017.22UBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-raspi5.15.0-1014.16UBUNTU-CVE-2021-47659
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47659
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2021-47659

Affected products (as reported)

VendorProductVersions
Linux Linux e6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before 4ab7e453a3ee88c274cf97bee9487ab92a66d313e6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before 1e29d829ad51d1472dd035487953a6724b56fc33e6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before b5cd108143513e4498027b96ec4710702d186f11e6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before 978e3d023256bfaf34a0033d40c94e8a8e70cf3ce6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before 787163d19bc3cdc6ca4b96223f62208534d1cf6be6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before ad6dd7a2bac86118985c7b3426e175b9d3c1ec4fe6fc3b68558e4c6d8d160b5daf2511b99afa8814 – before 4b674dd69701c2e22e8e7770c1706a69f3b17269
Linux Linux 4.14

References