CVE-2018-1000026: Input Validation

Published Feb 5, 2018
·
Updated

Improper validation in the bnx2x network card driver of the Linux kernel version 4.15 can allow for denial of service (DoS) attacks via a packet with a gsosize larger than ~9700 bytes. Untrusted guest VMs can exploit this vulnerability in the host machine, causing a crash in the network card.

References:

https://patchwork.ozlabs.org/patch/859410/

https://marc.info/?t=151606867000005&r=1&w=2

http://lists.openwall.net/netdev/2018/01/16/40

http://lists.openwall.net/netdev/2018/01/18/96

Upstream commits:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8914a595110a6eca69a5e275b323f5d09e18f4f9

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2b16f048729bf35e6c28a40cbfad07239f9dcd90

Other sources

Linux Linux kernel version at least v4.8 onwards, probably well before contains a Insufficient input validation vulnerability in bnx2x network card driver that can result in DoS: Network card firmware assertion takes card off-line. This attack appear to be exploitable via An attacker on a must pass a very large, specially crafted packet to the bnx2x card. This can be done from an untrusted guest VM..

— Ubuntu

Affected Software

40 affected componentsFixes available
Linux Linux kernel>=2.6.12<4.4.181
Linux Linux kernel>=4.5.0<4.9.159
Linux Linux kernel>=4.10<4.14.102
Linux Linux kernel>=4.15<4.16
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=17.10
redhat Enterprise Linux=7.0
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Workstation=7.0
Debian Debian Linux=8.0
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-1
ubuntu/linux<3.13.0-144.193
3.13.0-144.193
ubuntu/linux-aws<4.4.0-1016.16
4.4.0-1016.16
ubuntu/linux-lts-xenial<4.4.0-119.143~14.04.1
4.4.0-119.143~14.04.1
ubuntu/linux<4.4.0-119.143
4.4.0-119.143
ubuntu/linux-aws<4.4.0-1054.63
4.4.0-1054.63
ubuntu/linux-azure<4.13.0-1014.17
4.13.0-1014.17
ubuntu/linux-gcp<4.13.0-1012.16
4.13.0-1012.16
ubuntu/linux-hwe<4.13.0-41.46~16.04.1
4.13.0-41.46~16.04.1
ubuntu/linux-kvm<4.4.0-1020.25
4.4.0-1020.25
ubuntu/linux-oem<4.13.0-1022.24
4.13.0-1022.24
ubuntu/linux-raspi2<4.4.0-1086.94
4.4.0-1086.94
ubuntu/linux-snapdragon<4.4.0-1088.93
4.4.0-1088.93
ubuntu/linux-fips<4.4.0-1008.10
4.4.0-1008.10
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.15*
ubuntu/linux-gke*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-azure-6.11*
ubuntu/linux-gcp-6.11*
ubuntu/linux-hwe-6.11*
ubuntu/linux-lowlatency-hwe-6.11*
ubuntu/linux-raspi-realtime*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. 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 6.12.113-1Fixed in 7.2.12-1
  2. Upgrade

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

    Fixed in 3.13.0-144.193
  3. Upgrade

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

    Fixed in 4.4.0-1016.16
  4. Upgrade

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

    Fixed in 4.4.0-119.143~14.04.1
  5. Upgrade

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

    Fixed in 4.4.0-119.143
  6. Upgrade

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

    Fixed in 4.4.0-1054.63
  7. Upgrade

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

    Fixed in 4.13.0-1014.17
  8. Upgrade

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

    Fixed in 4.13.0-1012.16
  9. Upgrade

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

    Fixed in 4.13.0-41.46~16.04.1
  10. Upgrade

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

    Fixed in 4.4.0-1020.25
  11. Upgrade

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

    Fixed in 4.13.0-1022.24
  12. Upgrade

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

    Fixed in 4.4.0-1086.94
  13. Upgrade

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

    Fixed in 4.4.0-1088.93
  14. Upgrade

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

    Fixed in 4.4.0-1008.10
  15. Upgrade

    Upgrade Linux kernel bnx2x network card driver to a version that resolves this vulnerability.

    Patch 2b16f048729bf35e6c28a40cbfad07239f9dcd90
  16. Upgrade

    Upgrade Linux kernel bnx2x network card driver to a version that resolves this vulnerability.

    Patch 8914a595110a6eca69a5e275b323f5d09e18f4f9

Event History

Feb 5, 2018
Data Sourced
via Red Hat·04:16 AM
DescriptionSeverityAffected Software
Feb 9, 2018
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via OSV·12:00 AM
DescriptionSeverityAffected Software
CVE Published
via MITRE·11:00 PM
Data Sourced
via MITRE·11:00 PM
Description
Data Sourced
via NVD·11:29 PM
DescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2018-1000026?

CVE-2018-1000026 has a severity rating that indicates it can lead to denial of service (DoS) attacks.

2

How do I fix CVE-2018-1000026?

To fix CVE-2018-1000026, you should upgrade the Linux kernel to version 5.10.223-1 or later.

3

Which Linux distributions are affected by CVE-2018-1000026?

CVE-2018-1000026 affects certain versions of Red Hat Enterprise Linux, Ubuntu Linux, and Debian Linux.

4

Can CVE-2018-1000026 be exploited by untrusted guest VMs?

Yes, CVE-2018-1000026 can be exploited by untrusted guest VMs to crash the network card on the host machine.

5

What specific kernel version ranges are impacted by CVE-2018-1000026?

CVE-2018-1000026 impacts Linux kernel versions between 4.4.181 and 4.16, as well as several specific Ubuntu and Red Hat versions.

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