CVE-2019-11810: Null Pointer Dereference

Published May 7, 2019
·
Updated

A flaw was found in the Linux kernel, prior to version 5.0.7, in drivers/scsi/megaraid/megaraidsasbase.c, where a NULL pointer dereference can occur when megasascreateframepool() fails in megasasalloccmds(). An attacker can crash the system if they were able to load the megaraidsas kernel module and groom memory beforehand, leading to a denial of service (DoS), related to a use-after-free.

Other sources

An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when megasascreateframepool() fails in megasasalloccmds() in drivers/scsi/megaraid/megaraidsasbase.c. This causes a Denial of Service, related to a use-after-free.

In the Linux kernel before 5.0.7. a NULL pointer dereference can occur when megasascreateframepool() fails in megasasalloccmds() in drivers/scsi/megaraid/megaraidsasbase.c. leading to Denial of Service, related to a use-after-free.

Upstream Patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bcf3b67d16a4c8ffae0aa79de5853435e683945c

— Red Hat

Affected Software

21 affected componentsFixes available
redhat/kernel<0:2.6.32-754.22.1.el6
0:2.6.32-754.22.1.el6
redhat/kernel-rt<0:3.10.0-1062.rt56.1022.el7
0:3.10.0-1062.rt56.1022.el7
redhat/kernel<0:3.10.0-1062.el7
0:3.10.0-1062.el7
redhat/kernel-alt<0:4.14.0-115.14.1.el7a
0:4.14.0-115.14.1.el7a
redhat/kernel<0:3.10.0-862.46.1.el7
0:3.10.0-862.46.1.el7
redhat/kernel<0:3.10.0-957.35.1.el7
0:3.10.0-957.35.1.el7
redhat/kernel-rt<0:4.18.0-80.7.1.rt9.153.el8_0
0:4.18.0-80.7.1.rt9.153.el8_0
redhat/kernel<0:4.18.0-80.7.1.el8_0
0:4.18.0-80.7.1.el8_0
Linux Linux kernel<3.16.69
Linux Linux kernel>=3.17<3.18.139
Linux Linux kernel>=3.19<4.4.179
Linux Linux kernel>=4.5<4.9.168
Linux Linux kernel>=4.10<4.14.111
Linux Linux kernel>=4.15<4.19.34
Linux Linux kernel>=4.20<5.0.7
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.04
Debian Debian Linux=8.0
debian/linux
6.1.176-16.1.187-16.12.107-17.1.13-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 0:2.6.32-754.22.1.el6
  2. Upgrade

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

    Fixed in 0:3.10.0-1062.rt56.1022.el7
  3. Upgrade

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

    Fixed in 0:3.10.0-1062.el7
  4. Upgrade

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

    Fixed in 0:4.14.0-115.14.1.el7a
  5. Upgrade

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

    Fixed in 0:3.10.0-862.46.1.el7
  6. Upgrade

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

    Fixed in 0:3.10.0-957.35.1.el7
  7. Upgrade

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

    Fixed in 0:4.18.0-80.7.1.rt9.153.el8_0
  8. Upgrade

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

    Fixed in 0:4.18.0-80.7.1.el8_0
  9. Upgrade

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

    Fixed in 6.1.176-1Fixed in 6.1.187-1Fixed in 6.12.107-1Fixed in 7.1.13-1
  10. Upgrade

    Upgrade linux kernel to a version that resolves this vulnerability.

    Fixed in 5.0.7

Event History

May 7, 2019
CVE Published
12:00 AM
CVE Published
via MITRE·01:04 PM
Data Sourced
via MITRE·01:04 PM
Description
Data Sourced
via NVD·02:29 PM
RemedyDescriptionSeverityWeaknessAffected Software
May 13, 2019
Data Sourced
via Red Hat·06:35 AM
DescriptionSeverityAffected Software
Jan 11, 2024
Data Sourced
via Launchpad·11:15 PM
Description
Sep 10, 2026
Data Sourced
via Ubuntu·11:51 AM
RemedyDescriptionSeverityAffected Software
Sep 12, 2026
Data Sourced
via Debian·11:54 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2019-11810?

The severity of CVE-2019-11810 is classified as moderate due to the potential for system crashes.

2

How do I fix CVE-2019-11810?

To fix CVE-2019-11810, ensure your Linux kernel is updated to version 5.0.7 or later.

3

Which Linux distributions are affected by CVE-2019-11810?

CVE-2019-11810 affects various distributions including certain versions of Red Hat, Debian, and Ubuntu.

4

What are the potential impacts of CVE-2019-11810?

The potential impacts of CVE-2019-11810 include denial of service due to unexpected system crashes.

5

Is CVE-2019-11810 remotely exploitable?

CVE-2019-11810 is not considered remotely exploitable as it requires local access to the affected system.

Company

Resources

Contact

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