CVE-2017-15649

HIGH

Linux Kernel < 4.13.6 - Use-After-Free via Packet Fanout Race Condition

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-15649. PoCs published by SecuriTeam.

AI-analyzed exploit summary This is a working proof-of-concept exploit for CVE-2017-15649, a use-after-free vulnerability in the Linux Kernel's AF_PACKET implementation. The exploit triggers a race condition between fanout_add and bind operations, leading to a kernel crash or potential privilege escalation.

Description

net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.

Exploits (1)

exploitdb WORKING POC
by SecuriTeam · doslinux
https://www.exploit-db.com/exploits/44053

This is a working proof-of-concept exploit for CVE-2017-15649, a use-after-free vulnerability in the Linux Kernel's AF_PACKET implementation. The exploit triggers a race condition between fanout_add and bind operations, leading to a kernel crash or potential privilege escalation.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Racy
Target: Linux Kernel (versions prior to 4.14-rc2)
No auth needed
Prerequisites: Kernel with AF_PACKET support · KASAN enabled for crash reporting
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (14)

Core 14
Core References
Third Party Advisory x_refsource_misc
https://blogs.securiteam.com/index.php/archives/3484
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/101573
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0181
Issue Tracking, Third Party Advisory x_refsource_misc
http://patchwork.ozlabs.org/patch/813945/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3754-1/
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0152
Third Party Advisory x_refsource_misc
http://patchwork.ozlabs.org/patch/818726/
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0151
Exploit, Third Party Advisory x_refsource_misc
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6

Scores

CVSS v3 7.8
EPSS 0.0097
EPSS Percentile 57.3%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-362
Status published
Products (1)
linux/linux_kernel < 4.13.5
Published Oct 19, 2017
Tracked Since Feb 18, 2026