CVE-2026-72176
mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error
Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error damon_sysfs_scheme_add_dirs() setup the tried_regions directory after the stats directory setup is completed. When the tried_regions directory setup is failed, the setup function ensures the reference for the tried regions directory is released. Hence the error path should put references on setup succeeded directory objects, starting from the stats directory. However, the error path is putting the tried_regions directory instead of the stats directory. As a direct result, the stats directory object is leaked. Worse yet, if the tried_regions directory setup failed from the initial allocation, the scheme->tried_regions field remains uninitialized. The following kobject_put(&scheme->tried_regions->kobj) call in the error path will dereference the uninitialized memory. The setup failures should not be common. But once it happens, the consequence is quite bad. Fix this issue by correctly putting the stats directory instead of the tried_regions directory. The issue was discovered [1] by Sashiko.
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
Solution
- Update the Linux kernel to the latest patched version.
- Ensure statistics directory object references are correctly handled.
- Verify proper initialization of scheme->tried_regions field.
- Test error paths for directory object management.
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-2026-72176.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72176 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-2026-72176
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-2026-72176 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72176 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': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '50a753171d255895e5dd41566986b48dcec06f31', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': 'f63d6e5ba72aeacdee4fddc902bd7616cd62b919', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '40a04601a3f66cabd6629c258a07af645a658865', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '6b6b5d7c2c957136b92c00b77b7175259f13082b', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '05ea83ee88ca70f8932906d9f2617ff996f45b50', 'versionType': 'git'}], 'programFiles': ['mm/damon/sysfs-schemes.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'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': ['mm/damon/sysfs-schemes.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '50a753171d255895e5dd41566986b48dcec06f31', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': 'f63d6e5ba72aeacdee4fddc902bd7616cd62b919', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '40a04601a3f66cabd6629c258a07af645a658865', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '6b6b5d7c2c957136b92c00b77b7175259f13082b', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '05ea83ee88ca70f8932906d9f2617ff996f45b50', 'versionType': 'git'}], 'programFiles': ['mm/damon/sysfs-schemes.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'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': ['mm/damon/sysfs-schemes.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': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '50a753171d255895e5dd41566986b48dcec06f31', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': 'f63d6e5ba72aeacdee4fddc902bd7616cd62b919', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '40a04601a3f66cabd6629c258a07af645a658865', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '6b6b5d7c2c957136b92c00b77b7175259f13082b', 'versionType': 'git'}, {'status': 'affected', 'version': '5181b75f438d2e5b7f27bf48c6ea88a87c2882b7', 'lessThan': '05ea83ee88ca70f8932906d9f2617ff996f45b50', 'versionType': 'git'}], 'programFiles': ['mm/damon/sysfs-schemes.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'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': ['mm/damon/sysfs-schemes.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error damon_sysfs_scheme_add_dirs() setup the tried_regions directory after the stats directory setup is completed. When the tried_regions directory setup is failed, the setup function ensures the reference for the tried regions directory is released. Hence the error path should put references on setup succeeded directory objects, starting from the stats directory. However, the error path is putting the tried_regions directory instead of the stats directory. As a direct result, the stats directory object is leaked. Worse yet, if the tried_regions directory setup failed from the initial allocation, the scheme->tried_regions field remains uninitialized. The following kobject_put(&scheme->tried_regions->kobj) call in the error path will dereference the uninitialized memory. The setup failures should not be common. But once it happens, the consequence is quite bad. Fix this issue by correctly putting the stats directory instead of the tried_regions directory. The issue was discovered [1] by Sashiko. Added Reference https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50 Added Reference https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865 Added Reference https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31 Added Reference https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b Added Reference https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919