CVE-2026-43055
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: file: Use kzalloc_flex for aio_cmd
The target_core_file doesn't initialize the aio_cmd->iocb for the ki_write_stream. When a write command fd_execute_rw_aio() is executed, we may get a bogus ki_write_stream value, causing unintended write failure status when checking iocb->ki_write_stream > max_write_streams in the block device.
Let's just use kzalloc_flex when allocating the aio_cmd and let ki_write_stream=0 to fix this issue.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab | affected |
| Linux | Linux | 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < 4eaff1728d0e69b95933412241bbccf4f797dba8 | affected |
| Linux | Linux | 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < 01f784fc9d0ab2a6dac45ee443620e517cb2a19b | affected |
| Linux | Linux | 6.16 | affected |
| Linux | Linux | 0 < 6.16 | unaffected |
| Linux | Linux | 6.18.22 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.12 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab
- https://git.kernel.org/stable/c/4eaff1728d0e69b95933412241bbccf4f797dba8
- https://git.kernel.org/stable/c/01f784fc9d0ab2a6dac45ee443620e517cb2a19b
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