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CVE-2026-64360— hfs/hfsplus: zero-initialize buffer in hfs_bnode_read

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于hfs_bnode_read函数在验证失败时未初始化缓冲区，可能导致未初始化值使用。

AI Predicted 5.5 Difficulty: Hard EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1001 · Data Obfuscation

Affected Version Matrix 29

VendorProduct Version RangeStatus
Linux Linux 67ecc81f6492275c9c54280532f558483c99c90e< 34684a04777358b2b40ac729e54c8e45359e46b3 affected
a1a60e79502279f996e55052f50cc14919020475< 0b189b2204f1a2612dc68f8d139fb5b80539e710 affected
fe2891a9c43ab87d1a210d61e6438ca6936e2f62< 8f72fd25a57a457866350359ddd27a43caa62c95 affected
384a66b89f9540a9a8cb0f48807697dfabaece4c< 16ca053c2be5f4f3044dccf7fc19237dc820d394 affected
efc095b35b23297e419c2ab4fc1ed1a8f0781a29< d2afc7ecee476f9251dd87444f7fb6a424410922 affected
a431930c9bac518bf99d6b1da526a7f37ddee8d8< f3461b84a4865d9b5e70fbb71da72ae044a3bcd2 affected
a431930c9bac518bf99d6b1da526a7f37ddee8d8< d5b45bad75cd2730b8452aed4d3b20a2b2a12576 affected
a431930c9bac518bf99d6b1da526a7f37ddee8d8< d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf affected
… +21 more rows
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I. Basic Information for CVE-2026-64360

Vulnerability Information
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Vulnerability Title
hfs/hfsplus: zero-initialize buffer in hfs_bnode_read
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于hfs_bnode_read函数在验证失败时未初始化缓冲区，可能导致未初始化值使用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 67ecc81f6492275c9c54280532f558483c99c90e ~ 34684a04777358b2b40ac729e54c8e45359e46b3 -
Linux Linux 6.17 -

II. Public POCs for CVE-2026-64360

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III. Intelligence Information for CVE-2026-64360

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Patches & Fixes for CVE-2026-64360 (8)

Same Patch Batch · Linux · 2026-07-25 · 274 CVEs total

CVE-2026-64355 9.8 CRITICAL bpf: Reject fragmented frames in devmap
CVE-2026-64459 9.8 CRITICAL tcp: restore RCU grace period in tcp_ao_destroy_sock
CVE-2026-64303 9.8 CRITICAL spi: fsl-lpspi: terminate the RX channel on TX prepare failure path
CVE-2026-64439 9.8 CRITICAL crypto: krb5 - filter out async aead implementations at alloc
CVE-2026-64410 9.8 CRITICAL netfilter: flowtable: IPIP tunnel hardware offload is not yet support
CVE-2026-64399 9.8 CRITICAL ksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE
CVE-2026-64397 9.8 CRITICAL ksmbd: serialize QUERY_DIRECTORY requests per file
CVE-2026-64391 9.8 CRITICAL ksmbd: use opener credentials for ADS I/O
CVE-2026-64387 9.8 CRITICAL smb: client: fix query directory replay double-free
CVE-2026-64386 9.8 CRITICAL smb: client: fix query_info() replay double-free
CVE-2026-64385 9.8 CRITICAL smb: client: fix double-free in SMB2_ioctl() replay
CVE-2026-64383 9.8 CRITICAL smb: client: fix double-free in SMB2_flush() replay
CVE-2026-64384 9.8 CRITICAL smb: client: fix change notify replay double-free
CVE-2026-64268 9.8 CRITICAL RDMA/siw: bound Read Response placement to the RREAD length
CVE-2026-64523 9.8 CRITICAL net/handshake: Take a long-lived file reference at submit
CVE-2026-64269 9.1 CRITICAL RDMA/rtrs-srv: Bound RDMA-Write length to chunk size in rdma_write_sg
CVE-2026-64257 9.1 CRITICAL smb: client: reject overlapping data areas in SMB2 responses
CVE-2026-64319 9.1 CRITICAL nvmet-auth: validate reply message payload bounds against transfer length
CVE-2026-64320 9.1 CRITICAL nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page
CVE-2026-64393 9.1 CRITICAL ksmbd: run set info with opener credentials

Showing top 20 of 274 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64360

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