1. Home
  2. Vulnerabilities
  3. CVE-2026-72169
0.0
NA
CVE-2026-72169
kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES When using scratch_scale, the scratch sizes are rounded up to CMA_MIN_ALIGNMENT_BYTES since they will be released as MIGRATE_CMA. This is not done when using fixed scratch sizes via command line. This can result in user specifying a size which is not aligned, and thus kernel releasing a pageblock that is only partially scratch. Do the rounding up for both cases in scratch_size_update().

Details
INFO

Published Date :

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

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2026-72169 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
Solution
Ensure scratch sizes are aligned to CMA_MIN_ALIGNMENT_BYTES for proper memory release.
  • Update scratch size calculation in scratch_size_update().
  • Round up scratch sizes to CMA_MIN_ALIGNMENT_BYTES.
  • Apply the fix to both dynamic and fixed scratch sizes.
  • Release memory pages correctly.
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-2026-72169.

URL Resource
https://git.kernel.org/stable/c/0e39380a7316122e1b00012b3f3cd3e318b3e7d3
https://git.kernel.org/stable/c/9fefab759f59bf891bef7be15aee4bc7caec7ec3
https://git.kernel.org/stable/c/b8271be34bce151597da5b5179e0648c281322a4
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72169 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-2026-72169 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-2026-72169 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-2026-72169 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
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': 'b8271be34bce151597da5b5179e0648c281322a4', 'versionType': 'git'}, {'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': '9fefab759f59bf891bef7be15aee4bc7caec7ec3', 'versionType': 'git'}, {'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': '0e39380a7316122e1b00012b3f3cd3e318b3e7d3', 'versionType': 'git'}], 'programFiles': ['kernel/liveupdate/kexec_handover.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/liveupdate/kexec_handover.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': 'b8271be34bce151597da5b5179e0648c281322a4', 'versionType': 'git'}, {'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': '9fefab759f59bf891bef7be15aee4bc7caec7ec3', 'versionType': 'git'}, {'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': '0e39380a7316122e1b00012b3f3cd3e318b3e7d3', 'versionType': 'git'}], 'programFiles': ['kernel/liveupdate/kexec_handover.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.42', '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': ['kernel/liveupdate/kexec_handover.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': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': 'b8271be34bce151597da5b5179e0648c281322a4', 'versionType': 'git'}, {'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': '9fefab759f59bf891bef7be15aee4bc7caec7ec3', 'versionType': 'git'}, {'status': 'affected', 'version': '3dc92c311498c4d307cfdd0c6c3ac9355b50f683', 'lessThan': '0e39380a7316122e1b00012b3f3cd3e318b3e7d3', 'versionType': 'git'}], 'programFiles': ['kernel/liveupdate/kexec_handover.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/liveupdate/kexec_handover.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES When using scratch_scale, the scratch sizes are rounded up to CMA_MIN_ALIGNMENT_BYTES since they will be released as MIGRATE_CMA. This is not done when using fixed scratch sizes via command line. This can result in user specifying a size which is not aligned, and thus kernel releasing a pageblock that is only partially scratch. Do the rounding up for both cases in scratch_size_update().
    Added Reference https://git.kernel.org/stable/c/0e39380a7316122e1b00012b3f3cd3e318b3e7d3
    Added Reference https://git.kernel.org/stable/c/9fefab759f59bf891bef7be15aee4bc7caec7ec3
    Added Reference https://git.kernel.org/stable/c/b8271be34bce151597da5b5179e0648c281322a4
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
No CVSS metrics available for this vulnerability.