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Fencer Intel
high 7.8

CVE-2017-15649 json

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

Summary

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

  • 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-2018:0181RHSA-2018:0152RHSA-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
  • kgraft-patch-SLE12_Update_32 SLES 12-LTSS 2-2.1
  • kgraft-patch-SLE12_Update_31 SLES 12-LTSS 2-2.1
  • kgraft-patch-SLE12_Update_30 SLES 12-LTSS 2-2.1
  • kgraft-patch-SLE12_Update_29 SLES 12-LTSS 2-2.1

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

  1. First public exploit (EDB-44053)
  2. Published

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

References

Sources

Fencer Intel 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.