CVE-2026-72015
fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list
Description
In the Linux kernel, the following vulnerability has been resolved: fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list A pseudo-locked group's RMID is freed when it is created. On unmount rmdir_all_sub() unconditionally frees all RMID of all groups, resulting in a double-free of the pseudo-locked group's RMID. The consequence of this is that the original free results in the pseudo-locked group's RMID being added to the rmid_free_lru linked list and the second free then attempts to add the same RMID entry to the rmid_free_lru again. Do not double-free a pseudo-locked group's RMID.
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
Solution
- Apply the kernel patch to prevent double-freeing RMIDs.
- Update the Linux kernel to the patched version.
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-2026-72015.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72015 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-2026-72015
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-2026-72015 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72015 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': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': '9168176894332312c12ef052e784735dbf4ffe3f', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'b2fe9e140aa94b2816aab7ebc692b543e418f5e3', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': '52007bfdce5310e8c8a29849bfbfb188a1e50ca0', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'f7628eea9212e185a09df3aea603ca8580b8678d', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'b9f089723aee892efc77c349ae47a6b452b293c4', 'versionType': 'git'}], 'programFiles': ['fs/resctrl/rdtgroup.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', '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': ['fs/resctrl/rdtgroup.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': '9168176894332312c12ef052e784735dbf4ffe3f', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'b2fe9e140aa94b2816aab7ebc692b543e418f5e3', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': '52007bfdce5310e8c8a29849bfbfb188a1e50ca0', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'f7628eea9212e185a09df3aea603ca8580b8678d', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'b9f089723aee892efc77c349ae47a6b452b293c4', 'versionType': 'git'}], 'programFiles': ['fs/resctrl/rdtgroup.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', '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': ['fs/resctrl/rdtgroup.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': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': '9168176894332312c12ef052e784735dbf4ffe3f', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'b2fe9e140aa94b2816aab7ebc692b543e418f5e3', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': '52007bfdce5310e8c8a29849bfbfb188a1e50ca0', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'f7628eea9212e185a09df3aea603ca8580b8678d', 'versionType': 'git'}, {'status': 'affected', 'version': 'e0bdfe8e36f3fbbdc91e70bf927f743ca23917b0', 'lessThan': 'b9f089723aee892efc77c349ae47a6b452b293c4', 'versionType': 'git'}], 'programFiles': ['fs/resctrl/rdtgroup.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', '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': ['fs/resctrl/rdtgroup.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list A pseudo-locked group's RMID is freed when it is created. On unmount rmdir_all_sub() unconditionally frees all RMID of all groups, resulting in a double-free of the pseudo-locked group's RMID. The consequence of this is that the original free results in the pseudo-locked group's RMID being added to the rmid_free_lru linked list and the second free then attempts to add the same RMID entry to the rmid_free_lru again. Do not double-free a pseudo-locked group's RMID. Added Reference https://git.kernel.org/stable/c/52007bfdce5310e8c8a29849bfbfb188a1e50ca0 Added Reference https://git.kernel.org/stable/c/9168176894332312c12ef052e784735dbf4ffe3f Added Reference https://git.kernel.org/stable/c/b2fe9e140aa94b2816aab7ebc692b543e418f5e3 Added Reference https://git.kernel.org/stable/c/b9f089723aee892efc77c349ae47a6b452b293c4 Added Reference https://git.kernel.org/stable/c/f7628eea9212e185a09df3aea603ca8580b8678d