Buffer Overflow Affecting torvalds/linux package, versions [,5.11.9)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005120
  • published26 Jan 2022
  • disclosed22 Mar 2021
  • creditUnknown

Introduced: 22 Mar 2021

CVE-2021-28972  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.11.9 or higher.

Overview

Affected versions of this package are vulnerable to Buffer Overflow. 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.

References

CVSS Base Scores

version 3.1