CVE-2026-64360

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0b189b2204f1a2612dc68f8d139fb5b80539e710	Patch
https://git.kernel.org/stable/c/16ca053c2be5f4f3044dccf7fc19237dc820d394	Patch
https://git.kernel.org/stable/c/34684a04777358b2b40ac729e54c8e45359e46b3	Patch
https://git.kernel.org/stable/c/8f72fd25a57a457866350359ddd27a43caa62c95	Patch
https://git.kernel.org/stable/c/d2afc7ecee476f9251dd87444f7fb6a424410922	Patch
https://git.kernel.org/stable/c/d5b45bad75cd2730b8452aed4d3b20a2b2a12576	Patch
https://git.kernel.org/stable/c/d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf	Patch
https://git.kernel.org/stable/c/f3461b84a4865d9b5e70fbb71da72ae044a3bcd2	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-07-25 10:17

Updated : 2026-09-04 15:57

NVD link : CVE-2026-64360

Mitre link : CVE-2026-64360

CVE.ORG link : CVE-2026-64360

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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