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Fencer Vulns
medium 5.5

CVE-2017-15299 json

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which…

published 2017-10-14 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-6755

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call.

Patch / fix

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

debian advisories DEBIAN-CVE-2017-15299

  • linux Ubuntu 14.04 LTS 3.13.0-161.211
  • 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-2017-15299

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-alt RHEL 7 4.14.0-49.el7a
  • perf RHEL 7 4.14.0-49.el7a
  • kernel RHEL 7 4.14.0-49.el7a
  • python-perf RHEL 7 4.14.0-49.el7a
  • kernel-kdump RHEL 7 4.14.0-49.el7a
  • kernel-tools RHEL 7 4.14.0-49.el7a
  • kernel-tools-libs RHEL 7 4.14.0-49.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-49.el7a

red hat advisories RHSA-2018:0654

  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.85.1
  • kernel-xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1
  • kernel-syms SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1
  • kernel-source SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1
  • kernel-default SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1
  • kgraft-patch-SLE12-SP1_Update_26 SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 1-2.3.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.61-52.125.1
  • kernel-xen SLES 12-LTSS 3.12.61-52.125.1

suse advisories SUSE-SU-2018:0848-1SUSE-SU-2018:0834-1

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-2017-15299 updated cvss 5.5

kernel: Incorrect updates of uninstantiated keys crash the kernel

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix available
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-49.el7a, kernel 4.14.0-49.el7a, kernel-alt 4.14.0-49.el7a, python-perf 4.14.0-49.el7a, kernel-kdump 4.14.0-49.el7a, kernel-tools 4.14.0-49.el7a, +6 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-aarch64 4.14.0-49.el7a, kernel-debuginfo-common-ppc64le 4.14.0-49.el7a
    fixed: vendor fix RHSA-2018:0654
  • 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

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
Technology feeds

References

Sources

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.