Vulnerability Monitor

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CVE-2021-20257

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Published

2022-03-16T15:15:09.983

Last Modified

2024-11-21T05:46:13.570

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

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

3.9

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-835
  • Type: Secondary
    CWE-835
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application qemu qemu < 6.2.0 Yes
Operating System fedoraproject fedora 33 Yes
Application redhat openstack_platform 10.0 Yes
Application redhat openstack_platform 13.0 Yes
Operating System redhat enterprise_linux 6.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux_for_ibm_z_systems 8.0 Yes
Operating System redhat enterprise_linux_for_power_little_endian 8.0 Yes
Application redhat codeready_linux_builder - Yes
Operating System redhat enterprise_linux 8.0 No
Operating System redhat enterprise_linux_for_ibm_z_systems 8.0 No
Operating System redhat enterprise_linux_for_power_little_endian 8.0 No
Operating System debian debian_linux 10.0 Yes
References