CVE-2015-7566

MEDIUM

Linux Kernel < 4.4.1 - Denial of Service via USB Device Without Bulk-Out Endpoint

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2015-7566. PoCs published by OpenSource Security.

AI-analyzed exploit summary This exploit demonstrates a local DoS vulnerability in the Linux kernel's visor driver (CVE-2015-7566) by triggering a null pointer dereference when a malformed USB device descriptor is processed. The PoC includes an Arduino firmware to emulate the defective USB device.

Description

The clie_5_attach function in drivers/usb/serial/visor.c in the Linux kernel through 4.4.1 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by inserting a USB device that lacks a bulk-out endpoint.

Exploits (1)

exploitdb WORKING POC
by OpenSource Security · textdoslinux
https://www.exploit-db.com/exploits/39540

This exploit demonstrates a local DoS vulnerability in the Linux kernel's visor driver (CVE-2015-7566) by triggering a null pointer dereference when a malformed USB device descriptor is processed. The PoC includes an Arduino firmware to emulate the defective USB device.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Linux Kernel 3.10.0-229.20.1.el7.x86_64 (RHEL 7.1)
No auth needed
Prerequisites: Physical access to the target system · Arduino Leonardo with custom firmware
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (27)

Core 27
Core References
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2930-1
Third Party Advisory, VDB Entry x_refsource_confirm
https://security-tracker.debian.org/tracker/CVE-2015-7566
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/82975
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2967-1
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2930-2
Issue Tracking, VDB Entry x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1283371
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3503
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2967-2
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2930-3
Issue Tracking, VDB Entry x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1296466
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/537733/100/0/threaded
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2929-1
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2932-1
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2948-1
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3448
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2929-2
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/39540/
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2948-2

Scores

CVSS v3 4.6
EPSS 0.0184
EPSS Percentile 76.2%
Attack Vector PHYSICAL
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (6)
linux/linux_kernel < 4.4.1
novell/suse_linux_enterprise_debuginfo 11 sp4
novell/suse_linux_enterprise_real_time_extension 11 sp4
novell/suse_linux_enterprise_real_time_extension 12 sp1
novell/suse_linux_enterprise_server 11 extra (2 CPE variants)
novell/suse_linux_enterprise_software_development_kit 11 sp4
Published Feb 08, 2016
Tracked Since Feb 18, 2026