CVE-2026-43055

scsi: target: file: Use kzalloc_flex for aio_cmd

HIGH
7.5
CVSS Score
Published: May 1, 2026 at 02:15 PM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.16 ≤ v < 6.18.226.19 ≤ v < 6.19.126.167.07.0 rc17.0 rc27.0 rc37.0 rc47.0 rc5732f25a2895a8c1c54fb56544f0b1e23770ef4d7
Vendor states this is fixed in 01f784fc9d0ab2a6dac45ee443620e517cb2a19b (fixed)
Vendor states this is fixed in 4eaff1728d0e69b95933412241bbccf4f797dba8 (fixed)
Vendor states this is fixed in ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.22 (unaffected)
Vendor states this is fixed in 6.19.12 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-457

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