sound/core/seq_device.c in the Linux kernel before 4.13.4 allows local users to cause a denial of service (snd_rawmidi_dev_seq_free use-after-free and system crash) or possibly have unspecified other impact via a crafted USB device. References: https://groups.google.com/forum/#!msg/syzkaller/kuZzDHGkQu8/5du20rZEAAAJ http://seclists.org/oss-sec/2017/q4/223 An upstream fix: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc27fe7e8deef2f37cba3f2be2d52b6ca5eb9d57
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1510854]
This was fixed with the 4.13.4 stable update for Fedora.
Statement: This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, as a code with the flaw is not present in this product. This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. Future Linux kernel updates for the respective releases may address this issue.
What is Red Hat Enterprise Linux 7 for ARM 64, Red Hat Enterprise Linux 7 for Power 9 LE The kernel package as shipped with Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE is an updated kernel intended to support new architectures not available at the time of Red Hat Enterprise Linux 7 original shipping. The new kernel version is based on an upstream Linux kernel version 4.11. The offering is distributed with other updated packages, but most of the userspace is the standard Red Hat Enterprise Linux 7 Server RPM files. For more information please refer to: https://access.redhat.com/articles/3158541 https://access.redhat.com/articles/3158511