0.0
NA
CVE-2026-72223
nvdimm/btt: Free arena sub-allocations on discover_arenas() error path
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path Memory allocated by btt_freelist_init(), btt_rtt_init(), and btt_maplocks_init() is not freed on some discover_arenas() error paths. This leaks memory when arena discovery fails. Add the missing kfree() calls to release the allocations before returning an error. [ as: commit message and log edits ]
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
Solution
Apply kernel patches to free allocated memory on error paths, preventing leaks.
- Update the Linux kernel to the patched version.
- Verify memory allocations are freed on error.
- Monitor for memory leaks after update.
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-2026-72223.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72223 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-2026-72223
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-2026-72223 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72223 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': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '2d0364937550a7b3e2592629c2a68753ac020b28', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': 'eeb95774bc79268e2b78ebf01d8781560b5bd671', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '7563f69caa9143a491d5f26e563255c734751545', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '0b0d9404951aacc9717aa61e77af4a6e9e8f8249', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '873ced7f345e99f7ee16f9ff226515580332ecc4', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': 'ba59b96d8d21dc8729fca44a022ca5919c1848c9', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '13fe4cd9ddd0aacb7777812328be525a11ea3fea', 'versionType': 'git'}], 'programFiles': ['drivers/nvdimm/btt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/nvdimm/btt.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '2d0364937550a7b3e2592629c2a68753ac020b28', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': 'eeb95774bc79268e2b78ebf01d8781560b5bd671', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '7563f69caa9143a491d5f26e563255c734751545', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '0b0d9404951aacc9717aa61e77af4a6e9e8f8249', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '873ced7f345e99f7ee16f9ff226515580332ecc4', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': 'ba59b96d8d21dc8729fca44a022ca5919c1848c9', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '13fe4cd9ddd0aacb7777812328be525a11ea3fea', 'versionType': 'git'}], 'programFiles': ['drivers/nvdimm/btt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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': ['drivers/nvdimm/btt.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': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '2d0364937550a7b3e2592629c2a68753ac020b28', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': 'eeb95774bc79268e2b78ebf01d8781560b5bd671', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '7563f69caa9143a491d5f26e563255c734751545', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '0b0d9404951aacc9717aa61e77af4a6e9e8f8249', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '873ced7f345e99f7ee16f9ff226515580332ecc4', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': 'ba59b96d8d21dc8729fca44a022ca5919c1848c9', 'versionType': 'git'}, {'status': 'affected', 'version': '5212e11fde4d40fa627668b4f2222d20db488f71', 'lessThan': '13fe4cd9ddd0aacb7777812328be525a11ea3fea', 'versionType': 'git'}], 'programFiles': ['drivers/nvdimm/btt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/nvdimm/btt.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path Memory allocated by btt_freelist_init(), btt_rtt_init(), and btt_maplocks_init() is not freed on some discover_arenas() error paths. This leaks memory when arena discovery fails. Add the missing kfree() calls to release the allocations before returning an error. [ as: commit message and log edits ] Added Reference https://git.kernel.org/stable/c/0b0d9404951aacc9717aa61e77af4a6e9e8f8249 Added Reference https://git.kernel.org/stable/c/13fe4cd9ddd0aacb7777812328be525a11ea3fea Added Reference https://git.kernel.org/stable/c/2d0364937550a7b3e2592629c2a68753ac020b28 Added Reference https://git.kernel.org/stable/c/30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5 Added Reference https://git.kernel.org/stable/c/7563f69caa9143a491d5f26e563255c734751545 Added Reference https://git.kernel.org/stable/c/873ced7f345e99f7ee16f9ff226515580332ecc4 Added Reference https://git.kernel.org/stable/c/ba59b96d8d21dc8729fca44a022ca5919c1848c9 Added Reference https://git.kernel.org/stable/c/eeb95774bc79268e2b78ebf01d8781560b5bd671
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.