CVE-2026-72177
mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs()
Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs() Patch series "mm/damon/sysfs-schemes: fix wrong directories put orders in error paths". Error paths of damon_sysfs_access_pattern_add_dirs() and damon_sysfs_scheme_add_dirs() functions put references to directories in wrong orders. As a result, uninitialized memory dereference and/or memory leak can happen. Fix those. This patch (of 2): In access_pattern_add_dirs(), error handling path puts references starting from setup failed directories. If the failure happpened from the initial allication in the setup functions, uninitialized memory dereference happen. The allocation failures will not commonly happen, but the consequence is quite bad. Fix the wrong reference put orders. 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
- Apply the provided patch series to the Linux kernel.
- Update the Linux kernel to a corrected version.
- Review error handling for directory reference management.
- Ensure proper order for reference put operations.
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-2026-72177.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72177 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-2026-72177
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-2026-72177 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72177 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': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': '0710cc97962ca3bcabaa15ce7fead300faf726cd', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'a8c0592a80e954825f2ba29e7f32893f1df762f2', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'e03442b0c48bdb034f5b7cf9f3b76d8025576071', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'f18c561eb9c51f1ba3adb6117926a98a66599848', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'ee59df7a886a35113f309e3eb791060c46f79bb1', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'd58fdbe37a829fd2e5803dd4e5a72992dd8c5368', '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': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'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': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': '0710cc97962ca3bcabaa15ce7fead300faf726cd', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'a8c0592a80e954825f2ba29e7f32893f1df762f2', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'e03442b0c48bdb034f5b7cf9f3b76d8025576071', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'f18c561eb9c51f1ba3adb6117926a98a66599848', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'ee59df7a886a35113f309e3eb791060c46f79bb1', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'd58fdbe37a829fd2e5803dd4e5a72992dd8c5368', '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': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'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': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': '0710cc97962ca3bcabaa15ce7fead300faf726cd', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'a8c0592a80e954825f2ba29e7f32893f1df762f2', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'e03442b0c48bdb034f5b7cf9f3b76d8025576071', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'f18c561eb9c51f1ba3adb6117926a98a66599848', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'ee59df7a886a35113f309e3eb791060c46f79bb1', 'versionType': 'git'}, {'status': 'affected', 'version': '7e84b1f8212a038ebeee06de56db7181148fa0cd', 'lessThan': 'd58fdbe37a829fd2e5803dd4e5a72992dd8c5368', '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': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'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: fix dir put orders in access_pattern_add_dirs() Patch series "mm/damon/sysfs-schemes: fix wrong directories put orders in error paths". Error paths of damon_sysfs_access_pattern_add_dirs() and damon_sysfs_scheme_add_dirs() functions put references to directories in wrong orders. As a result, uninitialized memory dereference and/or memory leak can happen. Fix those. This patch (of 2): In access_pattern_add_dirs(), error handling path puts references starting from setup failed directories. If the failure happpened from the initial allication in the setup functions, uninitialized memory dereference happen. The allocation failures will not commonly happen, but the consequence is quite bad. Fix the wrong reference put orders. The issue was discovered [1] by Sashiko. Added Reference https://git.kernel.org/stable/c/0710cc97962ca3bcabaa15ce7fead300faf726cd Added Reference https://git.kernel.org/stable/c/a8c0592a80e954825f2ba29e7f32893f1df762f2 Added Reference https://git.kernel.org/stable/c/d58fdbe37a829fd2e5803dd4e5a72992dd8c5368 Added Reference https://git.kernel.org/stable/c/e03442b0c48bdb034f5b7cf9f3b76d8025576071 Added Reference https://git.kernel.org/stable/c/ee59df7a886a35113f309e3eb791060c46f79bb1 Added Reference https://git.kernel.org/stable/c/f18c561eb9c51f1ba3adb6117926a98a66599848