CVE-2018-18445 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b799207e1e1816b09e7a5920fbb2d5fcf6edd681 Patch  Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:0512 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:0514 Third Party Advisory 
https://bugs.chromium.org/p/project-zero/issues/detail?id=1686 Issue Tracking  Patch  Third Party Advisory 
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75 Patch  Release Notes  Third Party Advisory 
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13 Patch  Release Notes  Third Party Advisory 
https://github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681 Patch  Third Party Advisory 
https://support.f5.com/csp/article/K38456756
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 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-18445
NVD Published Date:
10/17/2018
NVD Last Modified:
10/15/2020
Source:
MITRE