Out-of-bounds Read Affecting qemu-system-aarch64 package, versions <15:4.2.1-5.el7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ORACLE7-QEMUSYSTEMAARCH64-2598552
  • published10 Apr 2022
  • disclosed31 Dec 2020

Introduced: 31 Dec 2020

CVE-2019-20808  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Oracle:7 qemu-system-aarch64 to version 15:4.2.1-5.el7 or higher.
This issue was patched in ELSA-2021-9109.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-system-aarch64 package and not the qemu-system-aarch64 package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.

CVSS Scores

version 3.1