CVE-2019-15099: Null Pointer Dereference
First published: Fri Aug 16 2019(Updated: )
A flaw in the Linux kernels implementation of the ath10k USB device driver could allow an attacker with the ability to plug in custom-crafted hardware to create a null pointer dereference via an incomplete address in an endpoint descriptor. This will crash the system. Upstream Patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bfd6e6e6c5d2ee43a3d9902b36e01fc7527ebb27">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bfd6e6e6c5d2ee43a3d9902b36e01fc7527ebb27</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-alt | <0:4.14.0-115.19.1.el7a | 0:4.14.0-115.19.1.el7a |
| redhat/kernel-rt | <0:4.18.0-193.rt13.51.el8 | 0:4.18.0-193.rt13.51.el8 |
| redhat/kernel | <0:4.18.0-193.el8 | 0:4.18.0-193.el8 |
| Linux kernel | >=4.14<4.14.157 | |
| Linux kernel | >=4.15<4.19.87 | |
| Linux kernel | >=4.20<5.3.14 | |
| Linux kernel | >=5.4.0<5.4.1 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =19.10 | |
| Linux Kernel | >=4.14<4.14.157 | |
| Linux Kernel | >=4.15<4.19.87 | |
| Linux Kernel | >=4.20<5.3.14 | |
| Linux Kernel | >=5.4.0<5.4.1 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.10 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
Remedy
As the ath10k module will be auto-loaded when required, its use can be disabled by preventing the module from loading using the following instructions. On the command line, as root, execute the following command: # echo "install ath10k_usb /bin/true" >> /etc/modprobe.d/disable-ath10k_usb.conf The system will need to be restarted if the ath10k_usb module are loaded. In most circumstances, the kernel modules will be unable to be unloaded while the ath10k WiFi network interface is in use. If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-15099 https://nvd.nist.gov/vuln/detail/CVE-2019-15099
- https://bugzilla.redhat.com/show_bug.cgi?id=1743560
- https://access.redhat.com/errata/RHSA-2020:1493
- https://access.redhat.com/errata/RHSA-2020:1567
- https://access.redhat.com/errata/RHSA-2020:1769
- https://access.redhat.com/security/cve/cve-2019-15099
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
- https://lore.kernel.org/linux-wireless/20190804003101.11541-1-benquike@gmail.com/T/#u
- https://security.netapp.com/advisory/ntap-20190905-0002/
- https://support.f5.com/csp/article/K76295179
- https://support.f5.com/csp/article/K76295179?utm_source=f5support&utm_medium=RSS
- https://usn.ubuntu.com/4258-1/
- https://usn.ubuntu.com/4284-1/
- https://usn.ubuntu.com/4287-1/
- https://usn.ubuntu.com/4287-2/
- https://support.f5.com/csp/article/K76295179?utm_source=f5support&amp;utm_medium=RSS
- https://launchpad.net/bugs/cve/CVE-2019-15099
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bfd6e6e6c5d2ee43a3d9902b36e01fc7527ebb27
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1783849
- https://access.redhat.com/solutions/41278
- https://lore.kernel.org/linux-wireless/20190804003101.11541-1-benquike%40gmail.com/T/#u
- https://support.f5.com/csp/article/K76295179?utm_source=f5support&%3Butm_medium=RSS
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15099
- https://nvd.nist.gov/vuln/detail/CVE-2019-15099
- https://security-tracker.debian.org/tracker/CVE-2019-15099
- https://ubuntu.com/security/CVE-2019-15099
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2019-15099?
CVE-2019-15099 is classified as a high severity vulnerability that can lead to system crashes.
How do I fix CVE-2019-15099?
To remediate CVE-2019-15099, update your Linux kernel to a patched version, such as 4.14.0-115.19.1.el7a or 4.18.0-193.rt13.51.el8.
Which systems are affected by CVE-2019-15099?
CVE-2019-15099 affects certain versions of the Linux kernel, specifically those from 4.14.x to 5.4.0.
What impact does CVE-2019-15099 have on my system?
CVE-2019-15099 can cause a null pointer dereference, leading to a crash when a specially crafted device is connected.
Who is impacted by CVE-2019-15099?
Users and organizations running vulnerable versions of the Linux kernel could be impacted by CVE-2019-15099.
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