CVE-2026-64360
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.
How to fix
- linux linux_kernel5.5, 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.16, 6.18.39, 7.1.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.4.297 ≤ v < 5.5, 5.10.241 ≤ v < 5.10.261, 5.15.190 ≤ v < 5.15.212, 6.1.149 ≤ v < 6.1.178, 6.6.103 ≤ v < 6.6.145, 6.12.43 ≤ v < 6.12.96, 6.15.11 ≤ v < 6.16, 6.16.2 ≤ v < 6.18.39, 6.19 ≤ v < 7.1.4 | 5.5, 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.16, 6.18.39, 7.1.4 |
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