CVE-2018-20169
First published: Wed Dec 05 2018(Updated: )
A flaw was discovered in the Linux kernel's USB subsystem in the __usb_get_extra_descriptor() function in the drivers/usb/core/usb.c which mishandles a size check during the reading of an extra descriptor data. By using a specially crafted USB device which sends a forged extra descriptor, an unprivileged user with physical access to the system can potentially cause a privilege escalation or trigger a system crash or lock up and thus to cause a denial of service (DoS).
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1127.rt56.1093.el7 | 0:3.10.0-1127.rt56.1093.el7 |
| redhat/kernel | <0:3.10.0-1127.el7 | 0:3.10.0-1127.el7 |
| redhat/kernel | <0:3.10.0-693.69.1.el7 | 0:3.10.0-693.69.1.el7 |
| redhat/kernel | <0:3.10.0-957.56.1.el7 | 0:3.10.0-957.56.1.el7 |
| redhat/kernel | <0:3.10.0-1062.26.1.el7 | 0:3.10.0-1062.26.1.el7 |
| redhat/kernel-rt | <0:4.18.0-147.rt24.93.el8 | 0:4.18.0-147.rt24.93.el8 |
| redhat/kernel | <0:4.18.0-147.el8 | 0:4.18.0-147.el8 |
| redhat/kernel-rt | <1:3.10.0-693.69.1.rt56.667.el6 | 1:3.10.0-693.69.1.rt56.667.el6 |
| IBM Data Risk Manager | <=2.0.6 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 | |
| Linux Kernel | <3.16.63 | |
| Linux Kernel | >=3.17<3.18.129 | |
| Linux Kernel | >=3.19<4.4.167 | |
| Linux Kernel | >=4.5<4.9.145 | |
| Linux Kernel | >=4.10<4.14.88 | |
| Linux Kernel | >=4.15<4.19.9 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Debian GNU/Linux | =8.0 | |
| Linux Kernel | <4.19.9 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2018-20169 https://nvd.nist.gov/vuln/detail/CVE-2018-20169
- https://bugzilla.redhat.com/show_bug.cgi?id=1660385
- https://access.redhat.com/errata/RHSA-2020:1070
- https://access.redhat.com/errata/RHSA-2020:1016
- https://access.redhat.com/errata/RHSA-2020:2770
- https://access.redhat.com/errata/RHSA-2020:2851
- https://access.redhat.com/errata/RHSA-2020:2522
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/errata/RHSA-2020:2777
- https://access.redhat.com/security/cve/cve-2018-20169
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=704620afc70cf47abb9d6a1a57f3825d2bca49cf
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.9
- https://github.com/torvalds/linux/commit/704620afc70cf47abb9d6a1a57f3825d2bca49cf
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- https://usn.ubuntu.com/3879-1/
- https://usn.ubuntu.com/3879-2/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/
- https://launchpad.net/bugs/cve/CVE-2018-20169
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=704620afc70cf47abb9d6a1a57f3825d2bca49cf
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1660386
- https://exchange.xforce.ibmcloud.com/vulnerabilities/154367
- https://www.ibm.com/support/pages/node/6335281 (Advisory)
- https://git.kernel.org/linus/704620afc70cf47abb9d6a1a57f3825d2bca49cf
- https://security-tracker.debian.org/tracker/CVE-2018-20169
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20169
- https://nvd.nist.gov/vuln/detail/CVE-2018-20169
- https://ubuntu.com/security/CVE-2018-20169
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2018-20169?
The severity of CVE-2018-20169 is considered to be critical due to its potential impact on system integrity if exploited.
How do I fix CVE-2018-20169?
To fix CVE-2018-20169, update the Linux kernel to a version that contains the necessary patches, such as the versions provided by Red Hat or Debian.
Which systems are affected by CVE-2018-20169?
CVE-2018-20169 affects various versions of the Linux kernel on systems such as Red Hat, Debian, and Ubuntu.
What kind of attack does CVE-2018-20169 facilitate?
CVE-2018-20169 can be exploited by an attacker with physical access to a system, allowing them to execute arbitrary code via a specially crafted USB device.
Is the vulnerability CVE-2018-20169 patched in current Linux distributions?
Yes, CVE-2018-20169 has been addressed in various Linux distributions through security updates available for supported versions.
- collector/redhat-cve
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2018-20169
- agent/weakness
- agent/author
- agent/severity
- collector/ibm-support
- source/IBM
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/remedy
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/trending
- agent/last-modified-date
- agent/source
- agent/event
- collector/security-tracker-debian
- source/Debian
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- collector/nvd-cve
- collector/nvd-index
- package-manager/redhat
- vendor/ibm
- canonical/ibm data risk manager
- version/ibm data risk manager/2.0.6
- package-manager/debian
- vendor/linux
- canonical/linux kernel
- version/linux kernel/3.17
- version/linux kernel/3.19
- version/linux kernel/4.5
- version/linux kernel/4.10
- version/linux kernel/4.15
- vendor/canonical
- canonical/ubuntu linux
- version/ubuntu linux/14.04
- version/ubuntu linux/16.04
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/8.0