CVE-2018-18445

Name: CVE-2018-18445
Creator: NVD / NIST
Published: 2018-10-17T19:29:00.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2018-18445 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.53%

40.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.14.9, < 4.14.75
Linux	Linux Kernel	>= 4.15, < 4.18.13
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server	7.6
Redhat	Enterprise Linux Server Aus	7.6
Redhat	Enterprise Linux Server Eus	7.6
Redhat	Enterprise Linux Server Tus	7.6
Redhat	Enterprise Linux Workstation	7.0

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681Patch, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0512Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0514Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75Patch, Release Notes, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13Patch, Release Notes, Third Party Advisory
https://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681Patch, Third Party Advisory
https://support.f5.com/csp/article/K38456756Third Party Advisory
https://usn.ubuntu.com/3832-1/Third Party Advisory
https://usn.ubuntu.com/3835-1/Third Party Advisory
https://usn.ubuntu.com/3847-1/Third Party Advisory
https://usn.ubuntu.com/3847-2/Third Party Advisory
https://usn.ubuntu.com/3847-3/Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681Patch, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0512Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0514Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75Patch, Release Notes, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13Patch, Release Notes, Third Party Advisory
https://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681Patch, Third Party Advisory
https://support.f5.com/csp/article/K38456756Third Party Advisory
https://usn.ubuntu.com/3832-1/Third Party Advisory
https://usn.ubuntu.com/3835-1/Third Party Advisory
https://usn.ubuntu.com/3847-1/Third Party Advisory
https://usn.ubuntu.com/3847-2/Third Party Advisory
https://usn.ubuntu.com/3847-3/Third Party Advisory

Timeline

Published: Oct 17, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-18445?

How severe is CVE-2018-18445?

CVE-2018-18445 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2018-18445?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-18445?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST