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Fencer Intel
high 7.8

CVE-2018-17182 json

An issue was discovered in the Linux kernel through 4.18.8.

published 8y ago modified 4mo ago also EUVD-2018-8956

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
1
Exploit-DB

Summary

An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.

Patch / fix

  • linux linux_kernel 3.16.58, 3.18.123, 4.4.157, 4.9.128, 4.14.71, 4.18.9
  • linux Debian 14, Debian 13, Debian 12 4.18.10-1

debian advisories DEBIAN-CVE-2018-17182

  • linux Ubuntu 16.04 LTS 4.4.0-137.163
  • linux Ubuntu 18.04 LTS 4.15.0-36.39
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1031.34
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1069.79
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1023.23
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1021.22~16.04.1
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1021.22
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-36.39~16.04.1

ubuntu advisories UBUNTU-CVE-2018-17182

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 4.14.0-115.2.2.el7a
  • perf RHEL 7 4.14.0-115.2.2.el7a
  • kernel RHEL 7 4.14.0-115.2.2.el7a
  • python-perf RHEL 7 4.14.0-115.2.2.el7a
  • kernel-tools RHEL 7 4.14.0-115.2.2.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.2.2.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.2.2.el7a
  • kernel-abi-whitelists RHEL 7 4.14.0-115.2.2.el7a

red hat advisories RHSA-2018:3656

  • kernel-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.162-4.19.2
  • kernel-syms-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.162-4.19.1
  • kernel-source-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.162-4.19.1
  • kernel-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-syms-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-source-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-rt SLE Real Time 12 SP3 4.4.162-3.26.1
  • kernel-syms-rt SLE Real Time 12 SP3 4.4.162-3.26.1

suse advisories SUSE-SU-2018:3032-2SUSE-SU-2019:0095-1SUSE-SU-2018:3961-1SUSE-SU-2018:3659-1SUSE-SU-2018:3331-1SUSE-SU-2018:3272-1

  • linux Arch Linux 4.18.9.arch1-1

arch linux advisories AVG-771

Is CVE-2018-17182 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2018-17182 updated cvss 7.0

kernel: Use-after-free in the vmacache_flush_all function resulting in a possible privilege escalation

  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.2.2.el7a, kernel 4.14.0-115.2.2.el7a, kernel-alt 4.14.0-115.2.2.el7a, python-perf 4.14.0-115.2.2.el7a, kernel-tools 4.14.0-115.2.2.el7a, kernel-tools-libs 4.14.0-115.2.2.el7a, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.2.2.el7a
    fixed: vendor fix RHSA-2018:3656
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    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. Published
  2. First public exploit (EDB-45497)

Exploit prediction

3.21% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-45497 Linux Kernel - VMA Use-After-Free via Buggy vmacache_flush_all() Fastpath Local Privilege Escalation local, 2018-09-26

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
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.