CVE-2019-19046: Medium severity Linux Linux kernel vulnerability

Published Nov 18, 2019
·
Updated

DISPUTED A memory leak in the ipmibmcregister() function in drivers/char/ipmi/ipmimsghandler.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering idasimpleget() failure, aka CID-4aa7afb0ee20. NOTE: third parties dispute the relevance of this because an attacker cannot realistically control this failure at probe time.

Other sources

A memory leak problem was found in ipmibmcregister in drivers/char/ipmi/ipmimsghandler.c in Intelligent Platform Management Interface (IPMI) which is used for incoming and outgoing message routing purpose. This flaw may allow an attacker with minimal privilege to cause a denial of service by triggering idasimpleget() failure.

A memory leak problem was found in ipmibmcregister in drivers/char/ipmi/ipmimsghandler.c in Intelligent Platform Management Interface (IPMI) which is used for incoming and outgoing message routing. This flaw may allow an attacker with minimal privilege to cause a denial of service by triggering idasimpleget() failure.

Reference: https://bugzilla.suse.com/showbug.cgi?id=1157304 https://github.com/torvalds/linux/commit/4aa7afb0ee20a97fbf0c5bab3df028d5fb85fdab

— Red Hat

Affected Software

12 affected componentsFixes available
redhat/kernel-rt<0:3.10.0-1160.rt56.1131.el7
0:3.10.0-1160.rt56.1131.el7
redhat/kernel-alt<0:4.14.0-115.29.1.el7a
0:4.14.0-115.29.1.el7a
redhat/kernel<0:3.10.0-1160.el7
0:3.10.0-1160.el7
redhat/kernel<0:3.10.0-957.65.1.el7
0:3.10.0-957.65.1.el7
redhat/kernel<0:3.10.0-1062.40.1.el7
0:3.10.0-1062.40.1.el7
redhat/kernel-rt<0:4.18.0-240.rt7.54.el8
0:4.18.0-240.rt7.54.el8
redhat/kernel<0:4.18.0-240.el8
0:4.18.0-240.el8
Linux Linux kernel<=5.3.11
Fedoraproject Fedora=30
Fedoraproject Fedora=31
openSUSE Leap=15.1
debian/linux
5.10.223-15.10.262-16.1.176-16.1.180-16.12.94-16.12.101-17.1.8-17.1.8-2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1160.rt56.1131.el7
  2. Upgrade

    Upgrade redhat/kernel-alt to a version that resolves this vulnerability.

    Fixed in 0:4.14.0-115.29.1.el7a
  3. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1160.el7
  4. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-957.65.1.el7
  5. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1062.40.1.el7
  6. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-240.rt7.54.el8
  7. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-240.el8
  8. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.262-1Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.101-1Fixed in 7.1.8-1Fixed in 7.1.8-2

Event History

Nov 18, 2019
CVE Published
12:00 AM
CVE Published
via MITRE·05:23 AM
Data Sourced
via MITRE·05:23 AM
Description
Disputed
06:15 AM
Data Sourced
via NVD·06:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 21, 2019
Data Sourced
via Red Hat·11:08 AM
DescriptionSeverityAffected Software
Sep 27, 2025
Data Sourced
via Launchpad·02:43 AM
Description
Aug 15, 2026
Data Sourced
via Ubuntu·11:46 AM
RemedyDescriptionSeverityAffected Software
Aug 17, 2026
Data Sourced
via Debian·11:49 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2019-19046?

CVE-2019-19046 has been classified as a denial of service vulnerability due to a memory leak.

2

How do I fix CVE-2019-19046?

To mitigate CVE-2019-19046, update your Linux kernel to versions 5.3.12 or later, or apply the respective patches from your distribution.

3

Which Linux distributions are affected by CVE-2019-19046?

CVE-2019-19046 affects multiple Linux distributions including certain versions of Red Hat, Debian, Fedora, and openSUSE.

4

What kind of attack can exploit CVE-2019-19046?

CVE-2019-19046 can be exploited by attackers to cause a denial of service by triggering memory consumption.

5

Is CVE-2019-19046 a low or high impact vulnerability?

CVE-2019-19046 is considered a high impact vulnerability as it can lead to service disruptions.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203