CVE-2017-16528

Severity: medium (CVSS 6.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-11-04 · updated 2026-06-17
Weakness: CWE-416

Description

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.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04
Linux kernel: from 3.19 before 4.1.47; from 4.2 before 4.4.99; from 4.5 before 4.9.63; from 4.10 before 4.13.4 — fixed in 4.1.47, 4.13.4, 4.4.99, 4.9.63

How to fix

Upgrade to a fixed version: Linux kernel 4.1.47, 4.13.4, 4.4.99, 4.9.63. Check the vendor advisory for mitigations.

References

https://github.com/torvalds/linux/commit/fc27fe7e8deef2f37cba3f2be2d52b6ca5eb9d57
https://groups.google.com/d/msg/syzkaller/kuZzDHGkQu8/5du20rZEAAAJ
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/
https://github.com/torvalds/linux/commit/fc27fe7e8deef2f37cba3f2be2d52b6ca5eb9d57
https://groups.google.com/d/msg/syzkaller/kuZzDHGkQu8/5du20rZEAAAJ
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/

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