Use After Free Affecting virt:rhel/sgabios package, versions <1:0.20170427git-3.module+el8.1.0+4066+0f1aadab


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (24th percentile)

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  • Snyk IDSNYK-RHEL8-VIRT-4125001
  • published26 Jul 2021
  • disclosed16 Jul 2020

Introduced: 16 Jul 2020

CVE-2020-15859  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 virt:rhel/sgabios to version 1:0.20170427git-3.module+el8.1.0+4066+0f1aadab or higher.
This issue was patched in RHSA-2021:4191.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:rhel/sgabios package and not the virt:rhel/sgabios package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.

CVSS Scores

version 3.1