0.0
NA
CVE-2026-64360
hfs/hfsplus: zero-initialize buffer in hfs_bnode_read
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: hfs/hfsplus: zero-initialize buffer in hfs_bnode_read hfs_bnode_read() can return early without writing to the output buffer when is_bnode_offset_valid() fails or when check_and_correct_requested_ length() corrects the length to zero. Callers such as hfs_bnode_read_ u16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the result unconditionally, leading to KMSAN uninit-value reports. Rather than initializing at each individual call site, zero the buffer at the start of hfs_bnode_read() before any validation checks. This ensures all callers in both hfs and hfsplus get a deterministic zero value regardless of which early-return path is taken.
Details
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
Aug. 17, 2026, 5:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Zero-initialize the buffer at the start of hfs_bnode_read to prevent uninitialized memory issues.
- Zero the buffer at the start of hfs_bnode_read.
- Ensure all validation checks occur after buffer zeroing.
- Update affected components if necessary.
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-2026-64360.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64360 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-2026-64360
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-2026-64360 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64360 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': '67ecc81f6492275c9c54280532f558483c99c90e', 'lessThan': '34684a04777358b2b40ac729e54c8e45359e46b3', 'versionType': 'git'}, {'status': 'affected', 'version': 'a1a60e79502279f996e55052f50cc14919020475', 'lessThan': '0b189b2204f1a2612dc68f8d139fb5b80539e710', 'versionType': 'git'}, {'status': 'affected', 'version': 'fe2891a9c43ab87d1a210d61e6438ca6936e2f62', 'lessThan': '8f72fd25a57a457866350359ddd27a43caa62c95', 'versionType': 'git'}, {'status': 'affected', 'version': '384a66b89f9540a9a8cb0f48807697dfabaece4c', 'lessThan': '16ca053c2be5f4f3044dccf7fc19237dc820d394', 'versionType': 'git'}, {'status': 'affected', 'version': 'efc095b35b23297e419c2ab4fc1ed1a8f0781a29', 'lessThan': 'd2afc7ecee476f9251dd87444f7fb6a424410922', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'f3461b84a4865d9b5e70fbb71da72ae044a3bcd2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'd5b45bad75cd2730b8452aed4d3b20a2b2a12576', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'd67aadee19ffdf3cc8520c5a4f4d5b2916d30baf', 'versionType': 'git'}, {'status': 'affected', 'version': 'e7d2dc2421e821e4045775e6dc226378328de6f6', 'versionType': 'git'}, {'status': 'affected', 'version': 'fc7f732984ec91f30be3e574e0644066d07f2b78', 'versionType': 'git'}, {'status': 'affected', 'version': 'eec522fd0d28106b14a59ab2d658605febe4a3bb', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.241', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.190', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.149', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.103', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.43', 'lessThan': '6.12.96', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.297', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.15.11', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.16.2', 'lessThan': '6.17', 'versionType': 'semver'}], 'programFiles': ['fs/hfs/bnode.c', 'fs/hfsplus/bnode.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.17', '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': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/hfs/bnode.c', 'fs/hfsplus/bnode.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '67ecc81f6492275c9c54280532f558483c99c90e', 'lessThan': '34684a04777358b2b40ac729e54c8e45359e46b3', 'versionType': 'git'}, {'status': 'affected', 'version': 'a1a60e79502279f996e55052f50cc14919020475', 'lessThan': '0b189b2204f1a2612dc68f8d139fb5b80539e710', 'versionType': 'git'}, {'status': 'affected', 'version': 'fe2891a9c43ab87d1a210d61e6438ca6936e2f62', 'lessThan': '8f72fd25a57a457866350359ddd27a43caa62c95', 'versionType': 'git'}, {'status': 'affected', 'version': '384a66b89f9540a9a8cb0f48807697dfabaece4c', 'lessThan': '16ca053c2be5f4f3044dccf7fc19237dc820d394', 'versionType': 'git'}, {'status': 'affected', 'version': 'efc095b35b23297e419c2ab4fc1ed1a8f0781a29', 'lessThan': 'd2afc7ecee476f9251dd87444f7fb6a424410922', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'f3461b84a4865d9b5e70fbb71da72ae044a3bcd2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'd5b45bad75cd2730b8452aed4d3b20a2b2a12576', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'd67aadee19ffdf3cc8520c5a4f4d5b2916d30baf', 'versionType': 'git'}, {'status': 'affected', 'version': 'e7d2dc2421e821e4045775e6dc226378328de6f6', 'versionType': 'git'}, {'status': 'affected', 'version': 'fc7f732984ec91f30be3e574e0644066d07f2b78', 'versionType': 'git'}, {'status': 'affected', 'version': 'eec522fd0d28106b14a59ab2d658605febe4a3bb', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.241', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.190', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.149', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.103', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.43', 'lessThan': '6.12.96', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.297', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.15.11', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.16.2', 'lessThan': '6.17', 'versionType': 'semver'}], 'programFiles': ['fs/hfs/bnode.c', 'fs/hfsplus/bnode.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.17', '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': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/hfs/bnode.c', 'fs/hfsplus/bnode.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 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': '67ecc81f6492275c9c54280532f558483c99c90e', 'lessThan': '34684a04777358b2b40ac729e54c8e45359e46b3', 'versionType': 'git'}, {'status': 'affected', 'version': 'a1a60e79502279f996e55052f50cc14919020475', 'lessThan': '0b189b2204f1a2612dc68f8d139fb5b80539e710', 'versionType': 'git'}, {'status': 'affected', 'version': 'fe2891a9c43ab87d1a210d61e6438ca6936e2f62', 'lessThan': '8f72fd25a57a457866350359ddd27a43caa62c95', 'versionType': 'git'}, {'status': 'affected', 'version': '384a66b89f9540a9a8cb0f48807697dfabaece4c', 'lessThan': '16ca053c2be5f4f3044dccf7fc19237dc820d394', 'versionType': 'git'}, {'status': 'affected', 'version': 'efc095b35b23297e419c2ab4fc1ed1a8f0781a29', 'lessThan': 'd2afc7ecee476f9251dd87444f7fb6a424410922', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'f3461b84a4865d9b5e70fbb71da72ae044a3bcd2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'd5b45bad75cd2730b8452aed4d3b20a2b2a12576', 'versionType': 'git'}, {'status': 'affected', 'version': 'a431930c9bac518bf99d6b1da526a7f37ddee8d8', 'lessThan': 'd67aadee19ffdf3cc8520c5a4f4d5b2916d30baf', 'versionType': 'git'}, {'status': 'affected', 'version': 'e7d2dc2421e821e4045775e6dc226378328de6f6', 'versionType': 'git'}, {'status': 'affected', 'version': 'fc7f732984ec91f30be3e574e0644066d07f2b78', 'versionType': 'git'}, {'status': 'affected', 'version': 'eec522fd0d28106b14a59ab2d658605febe4a3bb', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.241', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.190', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.149', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.103', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.43', 'lessThan': '6.12.96', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.297', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.15.11', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.16.2', 'lessThan': '6.17', 'versionType': 'semver'}], 'programFiles': ['fs/hfs/bnode.c', 'fs/hfsplus/bnode.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.17', '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': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/hfs/bnode.c', 'fs/hfsplus/bnode.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: hfs/hfsplus: zero-initialize buffer in hfs_bnode_read hfs_bnode_read() can return early without writing to the output buffer when is_bnode_offset_valid() fails or when check_and_correct_requested_ length() corrects the length to zero. Callers such as hfs_bnode_read_ u16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the result unconditionally, leading to KMSAN uninit-value reports. Rather than initializing at each individual call site, zero the buffer at the start of hfs_bnode_read() before any validation checks. This ensures all callers in both hfs and hfsplus get a deterministic zero value regardless of which early-return path is taken. Added Reference https://git.kernel.org/stable/c/0b189b2204f1a2612dc68f8d139fb5b80539e710 Added Reference https://git.kernel.org/stable/c/16ca053c2be5f4f3044dccf7fc19237dc820d394 Added Reference https://git.kernel.org/stable/c/34684a04777358b2b40ac729e54c8e45359e46b3 Added Reference https://git.kernel.org/stable/c/8f72fd25a57a457866350359ddd27a43caa62c95 Added Reference https://git.kernel.org/stable/c/d2afc7ecee476f9251dd87444f7fb6a424410922 Added Reference https://git.kernel.org/stable/c/d5b45bad75cd2730b8452aed4d3b20a2b2a12576 Added Reference https://git.kernel.org/stable/c/d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf Added Reference https://git.kernel.org/stable/c/f3461b84a4865d9b5e70fbb71da72ae044a3bcd2
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.