Incorrect Calculation of Buffer Size Affecting virt-devel:rhel/libnbd package, versions <0:1.2.2-1.module+el8.3.0+7353+9de0a3cc


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL8-VIRTDEVEL-4026337
  • published26 Jul 2021
  • disclosed20 Apr 2020

Introduced: 20 Apr 2020

CVE-2020-11947  (opens in a new tab)
CWE-131  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade RHEL:8 virt-devel:rhel/libnbd to version 0:1.2.2-1.module+el8.3.0+7353+9de0a3cc or higher.
This issue was patched in RHSA-2021:1762.

NVD Description

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

iscsi_aio_ioctl_cb in block/iscsi.c in QEMU 4.1.0 has a heap-based buffer over-read that may disclose unrelated information from process memory to an attacker.

CVSS Scores

version 3.1