What’s Vulnerable › Vulnerabilities

CVE-2019-19529

• Severity: medium (CVSS 6.3 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: 2019-12-03 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel before 5.3.11, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/net/can/usb/mcba_usb.c driver, aka CID-4d6636498c41.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.04, 19.10
• Linux kernel: before 5.3.11 — fixed in 5.3.11

How to fix

Upgrade to a fixed version: Linux kernel 5.3.11. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
• http://www.openwall.com/lists/oss-security/2019/12/03/4
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d6636498c41891d0482a914dd570343a838ad79
• https://usn.ubuntu.com/4225-1/
• https://usn.ubuntu.com/4225-2/
• https://usn.ubuntu.com/4226-1/
• https://usn.ubuntu.com/4227-1/
• https://usn.ubuntu.com/4227-2/
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
• http://www.openwall.com/lists/oss-security/2019/12/03/4
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11

Get alerted when CVE-2019-19529 or the next vulnerability affects your stack