CVE-2016-7164

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a...

7.5 HighFix available

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.87%Up 1.9 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: CVE-2016-7164
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: CVE-2016-7164
Updated: 2026-11-02

EUVDEUVD-2016-8032 No score

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: EUVD-2016-8032
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rw6x-mqq5-jg2g 7.5

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a...

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: GHSA-rw6x-mqq5-jg2g
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSV 7.5

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: CVE-2016-7164
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-7164 7.5

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: DEBIAN-CVE-2016-7164
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-7164 7.5

The construct function in puff.cpp in Libtorrent 1.1.0 allows remote torrent trackers to cause a denial of service (segmentation fault and crash) via a crafted GZIP response.

Record: UBUNTU-CVE-2016-7164
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2016-0320 No score

Applications using libtorrent-rasterbar are vulnerable to denial of service

Applications using libtorrent-rasterbar are vulnerable to denial of service. An attacker-controlled torrent tracker can crash victim torrent clients by sending malformed GZIP responses (CVE-2016-7164).

Record: MGASA-2016-0320
Updated: 2026-11-02

Affected products

libtorrent

Affected packages

Affected packages
Package	Affected	Fixed
`libtorrent-rasterbar` Debian:12	before 1.1.1-1	1.1.1-1
`libtorrent-rasterbar` Debian:13	before 1.1.1-1	1.1.1-1
`libtorrent-rasterbar` Debian:14	before 1.1.1-1	1.1.1-1
`libtorrent-rasterbar` Mageia:5	before 0.16.18-1.3.mga5	0.16.18-1.3.mga5
`libtorrent-rasterbar` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 0.16.11-1ubuntu10.16.11-1ubuntu20.16.11-1ubuntu40.16.11-1ubuntu50.16.13-1ubuntu10.16.13-1ubuntu20.16.13-1ubuntu2.10.16.13-1ubuntu2.1+esm1	None known
`libtorrent-rasterbar` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.0.6-21.0.7-11.0.7-1build11.0.7-1ubuntu0.1~esm1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-7164 is a high vulnerability (CVSS 7.5) in Libtorrent, published September 25, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.87%, the 86th percentile. Fixed in libtorrent-rasterbar 1.1.1-1.

References

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