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Buffer Overflow Affecting kernel-debuginfo package, versions <0:4.14.146-119.123.amzn2

Severity

 Recommended
0.0
high
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.1% (42nd percentile)

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  • Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-1674233
  • published 27 Sep 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 Amazon-Linux:2 kernel-debuginfo to version 0:4.14.146-119.123.amzn2 or higher.
This issue was patched in ALAS2-2019-1293.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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