NULL Pointer Dereference Affecting swtpm-tools-pkcs11 package, versions <0:0.7.0-1.20211109gitb79fd91.module+el8.6.0+847+b490afdd


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.48% (39th percentile)

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  • Snyk IDSNYK-ROCKY8-SWTPMTOOLSPKCS11-3199961
  • published5 Jan 2023
  • disclosed26 May 2021

Introduced: 26 May 2021

CVE-2021-20196  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 swtpm-tools-pkcs11 to version 0:0.7.0-1.20211109gitb79fd91.module+el8.6.0+847+b490afdd or higher.
This issue was patched in RLSA-2022:1759.

NVD Description

Note: Versions mentioned in the description apply only to the upstream swtpm-tools-pkcs11 package and not the swtpm-tools-pkcs11 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Base Scores

version 3.1