CVE-2019-3846: High severity Linux Linux kernel vulnerability

Published May 22, 2019
·
Updated

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.

Other sources

A flaw was found in Marvell wifi chip driver in Linux kernel. A heap overflow in mwifiexupdatebssdescwithie function in marvell/mwifiex/scan.c allows remote attackers to cause a denial of service(system crash) or possibly execute arbitrary code.

Upstream patch submission:

https://lore.kernel.org/linux-wireless/20190529125220.17066-1-tiwai@suse.de/

— Red Hat

A flaw was found in the Linux kernel's Marvell wifi chip driver. A heap overflow in mwifiexupdatebssdescwithie function in marvell/mwifiex/scan.c allows remote attackers to cause a denial of service(system crash) or execute arbitrary code.

Affected Software

79 affected componentsFixes available
redhat/kernel-rt<0:3.10.0-1062.4.1.rt56.1027.el7
0:3.10.0-1062.4.1.rt56.1027.el7
redhat/kernel<0:3.10.0-1062.4.1.el7
0:3.10.0-1062.4.1.el7
redhat/kernel-alt<0:4.14.0-115.17.1.el7a
0:4.14.0-115.17.1.el7a
redhat/kernel<0:3.10.0-957.54.1.el7
0:3.10.0-957.54.1.el7
redhat/kernel-rt<0:4.18.0-80.11.1.rt9.156.el8_0
0:4.18.0-80.11.1.rt9.156.el8_0
redhat/kernel<0:4.18.0-80.11.1.el8_0
0:4.18.0-80.11.1.el8_0
Linux Linux kernel>=3.0<3.16.70
Linux Linux kernel>=3.17<4.4.186
Linux Linux kernel>=4.5<4.9.186
Linux Linux kernel>=4.10<4.14.134
Linux Linux kernel>=4.15<4.19.59
Linux Linux kernel>=4.20<5.1.18
redhat Enterprise Linux=6.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.04
NetApp A700s Firmware
NetApp A700s
NetApp Cn1610 Firmware
NetApp Cn1610
NetApp H610s Firmware
NetApp H610s
NetApp Active Iq Unified Manager For Vmware Vsphere>=9.5
NetApp Hci Management Node
NetApp Solidfire
Fedoraproject Fedora=29
Fedoraproject Fedora=30
Debian Debian Linux=8.0
Debian Debian Linux=9.0
openSUSE Leap=15.0
openSUSE Leap=15.1
openSUSE Leap=42.3
All of the following
NetApp A700s Firmware
NetApp A700s
All of the following
NetApp Cn1610 Firmware
NetApp Cn1610
All of the following
NetApp H610s Firmware
NetApp H610s
debian/linux
6.1.176-16.1.190-16.12.107-16.12.116-17.2.15-17.3.3-1
ubuntu/linux-aws<4.4.0-1054.58
4.4.0-1054.58
ubuntu/linux-azure<4.15.0-1059.64~14.04.1
4.15.0-1059.64~14.04.1
ubuntu/linux-lts-xenial<4.4.0-164.192~14.04.1
4.4.0-164.192~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-159.187
4.4.0-159.187
ubuntu/linux-aws<4.4.0-1090.101
4.4.0-1090.101
ubuntu/linux-aws-hwe<4.15.0-1047.49~16.04.1
4.15.0-1047.49~16.04.1
ubuntu/linux-gcp<4.15.0-1040.42~16.04.1
4.15.0-1040.42~16.04.1
ubuntu/linux-hwe<4.15.0-58.64~16.04.1
4.15.0-58.64~16.04.1
ubuntu/linux-oracle<4.15.0-1021.23~16.04.1
4.15.0-1021.23~16.04.1
ubuntu/linux-raspi2<4.4.0-1118.127
4.4.0-1118.127
ubuntu/linux-snapdragon<4.4.0-1122.128
4.4.0-1122.128
ubuntu/linux-fips<4.4.0-1017.22
4.4.0-1017.22
ubuntu/linux<4.15.0-58.64
4.15.0-58.64
ubuntu/linux-aws<4.15.0-1047.49
4.15.0-1047.49
ubuntu/linux-gcp<4.15.0-1040.42
4.15.0-1040.42
ubuntu/linux-gke-4.15<4.15.0-1040.42
4.15.0-1040.42
ubuntu/linux-hwe<5.0.0-25.26~18.04.1
5.0.0-25.26~18.04.1
ubuntu/linux-oem<4.15.0-1050.57
4.15.0-1050.57
ubuntu/linux-oem-osp1<5.0.0-1018.20
5.0.0-1018.20
ubuntu/linux-oracle<4.15.0-1021.23
4.15.0-1021.23
ubuntu/linux-raspi2<4.15.0-1043.46
4.15.0-1043.46
ubuntu/linux-snapdragon<4.15.0-1060.66
4.15.0-1060.66
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-fips<4.15.0-2018.18
4.15.0-2018.18
ubuntu/linux-azure-fips<4.15.0-2006.7
4.15.0-2006.7
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-azure-fde*
ubuntu/linux-gke*
ubuntu/linux-riscv*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

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 0:3.10.0-1062.4.1.rt56.1027.el7
  2. Upgrade

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

    Fixed in 0:3.10.0-1062.4.1.el7
  3. Upgrade

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

    Fixed in 0:4.14.0-115.17.1.el7a
  4. Upgrade

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

    Fixed in 0:3.10.0-957.54.1.el7
  5. Upgrade

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

    Fixed in 0:4.18.0-80.11.1.rt9.156.el8_0
  6. Upgrade

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

    Fixed in 0:4.18.0-80.11.1.el8_0
  7. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1054.58
  8. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1059.64~14.04.1
  9. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-164.192~14.04.1
  10. Upgrade

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

    Fixed in 4.4.0-159.187
  11. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1090.101
  12. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1047.49~16.04.1
  13. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1040.42~16.04.1
  14. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-58.64~16.04.1
  15. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1021.23~16.04.1
  16. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.4.0-1118.127
  17. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.4.0-1122.128
  18. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1017.22
  19. Upgrade

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

    Fixed in 4.15.0-58.64
  20. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1047.49
  21. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1040.42
  22. Upgrade

    Upgrade ubuntu/linux-gke-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1040.42
  23. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 5.0.0-25.26~18.04.1
  24. Upgrade

    Upgrade ubuntu/linux-oem to a version that resolves this vulnerability.

    Fixed in 4.15.0-1050.57
  25. Upgrade

    Upgrade ubuntu/linux-oem-osp1 to a version that resolves this vulnerability.

    Fixed in 5.0.0-1018.20
  26. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1021.23
  27. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1043.46
  28. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.15.0-1060.66
  29. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2018.18
  30. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2006.7
  31. Upgrade

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

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.3-1
  32. Configuration

    If wireless networking is not used, blacklist the mwifiex kernel module to prevent use of the vulnerable code.

    Linux mwifiex kernel module module blacklist = blacklisted
  33. Compensating control

    Only connect to known-good wireless networks, or use an Ethernet connection instead of Wi-Fi.

Event History

May 22, 2019
Data Sourced
via Red Hat·06:45 PM
DescriptionSeverityAffected Software
May 30, 2019
CVE Published
12:53 PM
Jun 3, 2019
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via OSV·12:00 AM
DescriptionSeverityAffected Software
Event
via OSV·12:00 AM
CVE Published
via MITRE·06:25 PM
Data Sourced
via MITRE·06:25 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:29 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2019-3846?

CVE-2019-3846 has been rated as a high severity vulnerability due to its potential to allow privilege escalation.

2

How do I fix CVE-2019-3846?

To fix CVE-2019-3846, update your kernel to the recommended versions specified by your distribution, such as Red Hat or Debian.

3

What systems are affected by CVE-2019-3846?

CVE-2019-3846 affects several Linux kernel versions, particularly those using the mwifiex kernel module.

4

Is CVE-2019-3846 a remote attack vulnerability?

Yes, CVE-2019-3846 can be exploited remotely when a user connects to a malicious wireless network.

5

What type of vulnerability is CVE-2019-3846?

CVE-2019-3846 is primarily categorized as a heap overflow vulnerability.

Company

Resources

Contact

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