Bug 1783518 (CVE-2019-19530) - CVE-2019-19530 kernel: use-after-free caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver
Summary: CVE-2019-19530 kernel: use-after-free caused by a malicious USB device in the...
Status: NEW
Alias: CVE-2019-19530
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1802548 1802549 1802551 1802552 1783519 1802550
Blocks: 1783521
TreeView+ depends on / blocked
Reported: 2019-12-13 21:04 UTC by msiddiqu
Modified: 2020-02-26 07:16 UTC (History)
46 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in acm_probe in drivers/usb/class/cdc-acm.c in USB subsystem, this problem may create a race condition while a destroy() procedure is initiated, which may decrement the refcount on the interface so early that it is never under counted and may cause a use-after-free problem.
Clone Of:
Last Closed:

Attachments (Terms of Use)

Description msiddiqu 2019-12-13 21:04:15 UTC
In the Linux kernel, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/yurex.c driver


Upstream Patch:

Comment 1 msiddiqu 2019-12-13 21:04:36 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1783519]

Comment 2 Justin M. Forbes 2019-12-16 17:09:38 UTC
This is fixed for Fedora with the 5.2.10 stable kernel update.

Comment 5 Rohit Keshri 2020-02-13 12:05:45 UTC

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

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