Vulnerability Monitor

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CVE-2021-3638

An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Published

2022-03-03T23:15:08.147

Last Modified

2024-11-21T06:22:02.743

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-787
  • Type: Secondary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application qemu qemu ≤ 6.1.0 Yes
Operating System fedoraproject fedora 36 Yes
Operating System fedoraproject fedora 37 Yes
References