HOME VULNERABILITIESCVE-2015-7566

MEDIUMPOC

CVE-2015-7566

NVD-CWE-OtherPublished: February 8, 2016· Updated: Jun 17, 2026

4.6

CVSS v3.1

Official 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.

Technical Analysis

CVE-2015-7566 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.6.

A proof-of-concept (PoC) exploit exists for CVE-2015-7566. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Linux1 product(s)

linux kernel

novell4 product(s)

suse linux enterprise software development kitsuse linux enterprise debuginfosuse linux enterprise real time extensionsuse linux enterprise server

Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb3232138e37129e88240a98a1d2aba2187ff57c

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html

ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2015-7566

ADVISORYhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb3232138e37129e88240a98a1d2aba2187ff57c

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html

ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2015-7566

All References (54)

→

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb3232138e37129e88240a98a1d2aba2187ff57cVendor Advisory

→

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html

→

http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175792.html

→

http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html

→

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlThird Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.htmlThird Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlThird Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html

→

http://www.debian.org/security/2016/dsa-3448

→

http://www.debian.org/security/2016/dsa-3503

→

http://www.securityfocus.com/archive/1/537733/100/0/threaded

→

http://www.securityfocus.com/bid/82975

→

http://www.ubuntu.com/usn/USN-2929-1

→

http://www.ubuntu.com/usn/USN-2929-2

→

http://www.ubuntu.com/usn/USN-2930-1

Quick Facts

CVE IDCVE-2015-7566

CVSS Score4.6 / 10

SeverityMEDIUM

WeaknessNVD-CWE-Other

CISA KEVNo

ExploitPOC

Affected2 vendor(s)

PublishedFeb 8, 2016

Related CVEs (NVD-CWE-Other)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2015-7566 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

← All Vulnerabilities·Search for CVE-2015-7566·NVD