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 mishan…

published 2017-10-19 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7100

cvss: 7.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits: 1; Exploit-DB

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.

Patch / fix

distros 4 links 4

debian ubuntu red hat suse

linux Debian 14, Debian 13, Debian 12 4.13.10-1

debian advisories DEBIAN-CVE-2017-15649

linux Ubuntu 14.04 LTS 3.13.0-157.207
linux Ubuntu 16.04 LTS 4.4.0-101.124
linux-aws Ubuntu 14.04 LTS 4.4.0-1003.3
linux-aws Ubuntu 16.04 LTS 4.4.0-1041.50
linux-gcp Ubuntu 16.04 LTS 4.13.0-1002.5
linux-gke Ubuntu 16.04 LTS 4.4.0-1034.34
linux-hwe Ubuntu 16.04 LTS 4.13.0-32.35~16.04.1
linux-kvm Ubuntu 16.04 LTS 4.4.0-1010.15

ubuntu advisories UBUNTU-CVE-2017-15649

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel-rt enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
kernel-rt-trace enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
kernel-rt RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7

red hat advisories RHSA-2018:0181 RHSA-2018:0152 RHSA-2018:0151

kernel-rt SLE Real Time 12 SP2 4.4.95-21.1
kernel-syms-rt SLE Real Time 12 SP2 4.4.95-21.1
kernel-rt_debug SLE Real Time 12 SP2 4.4.95-21.1
kernel-source-rt SLE Real Time 12 SP2 4.4.95-21.1
kernel-ec2 SLE Module for Public Cloud 12 3.12.61-52.101.1
kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.63.1
kernel-xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1
kernel-syms SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1

suse advisories SUSE-SU-2018:0664-1 SUSE-SU-2018:0562-1 SUSE-SU-2018:0233-1 SUSE-SU-2017:3315-1 SUSE-SU-2017:3307-1 SUSE-SU-2017:3267-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-15649 updated 2026-11-04 cvss 7.8

kernel: Use-after-free in the af_packet.c

Red Hat Enterprise Linux 7 perf, kernel, python-perf, kernel-kdump, kernel-tools, kernel-tools-libs, +2 more
affected: no fix available
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7
fixed: vendor fix RHSA-2018:0151
Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-693.17.1.rt56.636.el7, kernel-rt-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.636.el7 Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.636.el7
fixed: vendor fix RHSA-2018:0152
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-kdump 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, +6 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-693.17.1.el7, kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.17.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7
fixed: vendor fix RHSA-2018:0151
Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-trace 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-vanilla 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-firmware 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.604.el6rt
fixed: vendor fix RHSA-2018:0181
Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

2017-10-17 First public exploit (EDB-44053)
2017-10-19 Published

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-44053 Linux Kernel - 'AF_PACKET' Use-After-Free (2) dos, 2017-10-17
kernel.org http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

Technology feeds

Linux kernel rss critical rss

References

git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=008ba2a13f2d04c947adc536d19debb8fe66f110
third-party-advisory
git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4971613c1639d8e5f102c4e797c3bf8f83a5a69e
third-party-advisory
github.com /torvalds/linux/commit/4971613c1639d8e5f102c4e797c3bf8f83a5a69e
patch, third-party-advisory
github.com /torvalds/linux/commit/008ba2a13f2d04c947adc536d19debb8fe66f110
patch, third-party-advisory
kernel.org /pub/linux/kernel/v4.x/ChangeLog-4.13.6
exploit, third-party-advisory
access.redhat.com /errata/RHSA-2018:0181
vendor-advisory
usn.ubuntu.com /3754-1/
vendor-advisory
access.redhat.com /errata/RHSA-2018:0152
vendor-advisory
access.redhat.com /errata/RHSA-2018:0151
vendor-advisory
blogs.securiteam.com /index.php/archives/3484
third-party-advisory
securityfocus.com /bid/101573
vdb-entry, third-party-advisory
lists.debian.org /debian-lts-announce/2017/12/msg00004.html
mailing-list
patchwork.ozlabs.org /patch/813945/
issue-tracking, third-party-advisory
patchwork.ozlabs.org /patch/818726/
third-party-advisory

Sources

CVE List CVE-2017-15649
NVD CVE-2017-15649

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary