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CVE-2026-43055

scsi: target: file: Use kzalloc_flex for aio_cmd

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.18.22, 6.19.12
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 · fixed in ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab; From 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 · fixed in 4eaff1728d0e69b95933412241bbccf4f797dba8; From 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 · fixed in 01f784fc9d0ab2a6dac45ee443620e517cb2a19b

  • Linux Linux

    6.16

  • KernelLinux

    From 6.16.0 · fixed in 6.18.22; From 6.19.0 · fixed in 6.19.12

References 3

git.kernel.org