{"id":"CVE-2026-43055","title":"scsi: target: file: Use kzalloc_flex for aio_cmd","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: file: Use kzalloc_flex for aio_cmd\n\nThe target_core_file doesn't initialize the aio_cmd->iocb for the\nki_write_stream. When a write command fd_execute_rw_…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab","Linux >= 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < 4eaff1728d0e69b95933412241bbccf4f797dba8","Linux >= 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < 01f784fc9d0ab2a6dac45ee443620e517cb2a19b","Linux 6.16"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T15:14:04.426072Z"},"published":"2026-05-01","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:30.422Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43055","references":[{"url":"https://git.kernel.org/stable/c/ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab"},{"url":"https://git.kernel.org/stable/c/4eaff1728d0e69b95933412241bbccf4f797dba8"},{"url":"https://git.kernel.org/stable/c/01f784fc9d0ab2a6dac45ee443620e517cb2a19b"}],"tags":["cve.org"],"epss":0.00609,"epssPercentile":0.48074,"ingestedAt":"2026-10-16T17:24:46.680Z","slug":"CVE-2026-43055","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: file: Use kzalloc_flex for aio_cmd\n\nThe target_core_file doesn't initialize the aio_cmd->iocb for the\nki_write_stream. When a write command fd_execute_rw_aio() is executed,\nwe may get a bogus ki_write_stream value, causing unintended write\nfailure status when checking iocb->ki_write_stream > max_write_streams\nin the block device.\n\nLet's just use kzalloc_flex when allocating the aio_cmd and let\nki_write_stream=0 to fix this issue.\n\n## Affected\n\n- `Linux >= 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab`\n- `Linux >= 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < 4eaff1728d0e69b95933412241bbccf4f797dba8`\n- `Linux >= 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 < 01f784fc9d0ab2a6dac45ee443620e517cb2a19b`\n- `Linux 6.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}