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MEDIUM · 6.7

CVE-2021-28972

In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace,...

Vulnerability Description

In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.

CVSS Score

6.7

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
LinuxLinux Kernel< 4.4.263
FedoraprojectFedora32
NetappCloud Backup-
NetappFas\/Aff Baseboard Management Controller-
NetappSolidfire Baseboard Management Controller Firmware-

Related Weaknesses (CWE)

CWE-120

References

FAQ

What is CVE-2021-28972?

CVE-2021-28972 is a vulnerability with a CVSS score of 6.7 (MEDIUM). In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace,...

How severe is CVE-2021-28972?

CVE-2021-28972 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-28972?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Netapp Cloud Backup, Netapp Fas\/Aff Baseboard Management Controller, Netapp Solidfire Baseboard Management Controller Firmware.