Vulnerability Monitor

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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, 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.

Published

2021-03-22T17:15:15.200

Last Modified

2024-11-21T06:00:28.767

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-120
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 4.4.263 Yes
Operating System linux linux_kernel ≤ 4.9.263 Yes
Operating System linux linux_kernel < 4.14.227 Yes
Operating System linux linux_kernel ≤ 4.19.183 Yes
Operating System linux linux_kernel < 5.4.108 Yes
Operating System linux linux_kernel < 5.10.26 Yes
Operating System linux linux_kernel < 5.11.9 Yes
Operating System fedoraproject fedora 32 Yes
Operating System fedoraproject fedora 33 Yes
Operating System fedoraproject fedora 34 Yes
Application netapp cloud_backup - Yes
Application netapp fas\/aff_baseboard_management_controller - Yes
Operating System netapp solidfire_baseboard_management_controller_firmware - Yes
References