CVE-2019-15221: Null Pointer Dereference
First published: Mon Aug 19 2019(Updated: )
An issue was discovered in the Linux kernel before 5.1.17. There is a NULL pointer dereference caused by a malicious USB device in the sound/usb/line6/pcm.c driver. Upstream patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3450121997ce872eb7f1248417225827ea249710">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3450121997ce872eb7f1248417225827ea249710</a> References: <a href="https://www.openwall.com/lists/oss-security/2019/08/20/2">https://www.openwall.com/lists/oss-security/2019/08/20/2</a> <a href="https://syzkaller.appspot.com/bug?id=240f09164db2c3d3af33a117c713dc7650dc29d6">https://syzkaller.appspot.com/bug?id=240f09164db2c3d3af33a117c713dc7650dc29d6</a>
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.1.17 | |
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| NetApp Active IQ Unified Manager for VMware vSphere | ||
| NetApp Data Availability Services | ||
| NetApp SolidFire & HCI Management Node | ||
| NetApp SolidFire | ||
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.04 | |
| Debian Linux | =8.0 | |
| SUSE Linux | =15.0 | |
| SUSE Linux | =15.1 | |
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| NetApp Baseboard Management Controller H410C | ||
| NetApp Baseboard Management Controller H410C Firmware | ||
| 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 |
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Reference Links
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3450121997ce872eb7f1248417225827ea249710
- https://syzkaller.appspot.com/bug?id=240f09164db2c3d3af33a117c713dc7650dc29d6
- http://www.openwall.com/lists/oss-security/2019/08/20/2
- https://usn.ubuntu.com/4115-1/
- https://usn.ubuntu.com/4118-1/
- https://security.netapp.com/advisory/ntap-20190905-0002/
- https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html
- https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
- https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
- https://usn.ubuntu.com/4147-1/
- https://usn.ubuntu.com/4286-2/
- https://usn.ubuntu.com/4286-1/
- https://launchpad.net/bugs/cve/CVE-2019-15221
- https://www.openwall.com/lists/oss-security/2019/08/20/2
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1749980
- https://access.redhat.com/solutions/41278
- https://access.redhat.com/errata/RHSA-2020:1567
- https://access.redhat.com/errata/RHSA-2020:1769
- https://bugzilla.redhat.com/show_bug.cgi?id=1749974
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15221
- https://nvd.nist.gov/vuln/detail/CVE-2019-15221
- https://security-tracker.debian.org/tracker/CVE-2019-15221
- https://ubuntu.com/security/CVE-2019-15221
- https://git.kernel.org/linus/3450121997ce872eb7f1248417225827ea249710
Frequently Asked Questions
What is the severity of CVE-2019-15221?
CVE-2019-15221 has been classified as a high-severity vulnerability due to the potential for NULL pointer dereference leading to system crashes.
How do I fix CVE-2019-15221?
To fix CVE-2019-15221, you should upgrade your Linux kernel to version 5.1.17 or later.
Which systems are affected by CVE-2019-15221?
CVE-2019-15221 affects Linux kernel versions prior to 5.1.17, including various distributions like Ubuntu and Debian.
What can an attacker do with CVE-2019-15221?
An attacker could exploit CVE-2019-15221 through a malicious USB device, potentially causing a denial of service by crashing the kernel.
Is there a known exploit for CVE-2019-15221?
As of now, there are no publicly disclosed exploits specifically targeting CVE-2019-15221, but the risk remains significant.
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