Buffer Overflow Affecting kernel-64kb package, versions <5.3.18-59.5.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-SLES153-KERNEL64KB-2682072
  • published14 Apr 2022
  • disclosed15 Jun 2021

Introduced: 15 Jun 2021

CVE-2021-28972  (opens in a new tab)
CWE-120  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade SLES:15.3 kernel-64kb to version 5.3.18-59.5.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64kb package and not the kernel-64kb package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

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 Scores

version 3.1