1. Home
  2. Vulnerabilities
  3. CVE-2026-72018
7.8
HIGH CVSS 3.1
CVE-2026-72018
dibs: loopback: validate offset and size in move_data()
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: dibs: loopback: validate offset and size in move_data() The loopback move_data() performs a memcpy into the registered DMB without checking whether offset + size exceeds the DMB length. Unlike real ISM hardware, which enforces memory region bounds natively, the software loopback has no such protection. A peer-supplied out-of-bounds offset or oversized write would result in an OOB write past the allocated kernel buffer. Add an explicit bounds check before the memcpy to reject such requests with -EINVAL.

Details
INFO

Published Date :

Aug. 15, 2026, 6:21 a.m.

Last Modified :

Aug. 17, 2026, 6:17 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72018 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Apply kernel updates to validate data offsets and sizes in loopback move_data function.
  • Update the Linux kernel to the latest version.
  • Ensure all systems incorporate the patch for loopback move_data.
  • Verify offset and size parameters are validated.
  • Reboot systems after applying updates.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72018.

URL Resource
https://git.kernel.org/stable/c/78237e3c0720fcc6eb9b87e90fd70f63eeca886f
https://git.kernel.org/stable/c/94fe0ab01b480b52bd8f977edbd845ef375d69fd
https://git.kernel.org/stable/c/b2f426a9a22886071966432ede8fceafffe12b8c
https://git.kernel.org/stable/c/ee188a6b264b71315a67f1b9470faad308b730d2
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72018 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72018 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72018 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72018 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': 'ee188a6b264b71315a67f1b9470faad308b730d2', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': 'b2f426a9a22886071966432ede8fceafffe12b8c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': '94fe0ab01b480b52bd8f977edbd845ef375d69fd', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': '78237e3c0720fcc6eb9b87e90fd70f63eeca886f', 'versionType': 'git'}], 'programFiles': ['drivers/dibs/dibs_loopback.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/dibs/dibs_loopback.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': 'ee188a6b264b71315a67f1b9470faad308b730d2', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': 'b2f426a9a22886071966432ede8fceafffe12b8c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': '94fe0ab01b480b52bd8f977edbd845ef375d69fd', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': '78237e3c0720fcc6eb9b87e90fd70f63eeca886f', 'versionType': 'git'}], 'programFiles': ['drivers/dibs/dibs_loopback.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/dibs/dibs_loopback.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': 'ee188a6b264b71315a67f1b9470faad308b730d2', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': 'b2f426a9a22886071966432ede8fceafffe12b8c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': '94fe0ab01b480b52bd8f977edbd845ef375d69fd', 'versionType': 'git'}, {'status': 'affected', 'version': 'f7a22071dbf316c982fb44308874bd7ad9ac2091', 'lessThan': '78237e3c0720fcc6eb9b87e90fd70f63eeca886f', 'versionType': 'git'}], 'programFiles': ['drivers/dibs/dibs_loopback.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/dibs/dibs_loopback.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: dibs: loopback: validate offset and size in move_data() The loopback move_data() performs a memcpy into the registered DMB without checking whether offset + size exceeds the DMB length. Unlike real ISM hardware, which enforces memory region bounds natively, the software loopback has no such protection. A peer-supplied out-of-bounds offset or oversized write would result in an OOB write past the allocated kernel buffer. Add an explicit bounds check before the memcpy to reject such requests with -EINVAL.
    Added Reference https://git.kernel.org/stable/c/78237e3c0720fcc6eb9b87e90fd70f63eeca886f
    Added Reference https://git.kernel.org/stable/c/94fe0ab01b480b52bd8f977edbd845ef375d69fd
    Added Reference https://git.kernel.org/stable/c/b2f426a9a22886071966432ede8fceafffe12b8c
    Added Reference https://git.kernel.org/stable/c/ee188a6b264b71315a67f1b9470faad308b730d2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact