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Buffer Overflow Affecting perf package, versions <0:4.18.0-80.11.2.el8_0

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.1% (42nd percentile)

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  • Snyk ID SNYK-RHEL8-PERF-3464552
  • published 26 Jul 2021
  • disclosed 17 Sep 2019
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Introduced: 17 Sep 2019

CVE-2019-14835 Open this link in a new tab
CWE-120 Open this link in a new tab

How to fix?

Upgrade RHEL:8 perf to version 0:4.18.0-80.11.2.el8_0 or higher.
This issue was patched in RHSA-2019:2827.

NVD Description

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

A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host.

References

CVSS Scores

version 3.1
Expand this section

NVD

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High