Vulnerability-Lookup

FKIE_CVE-2026-43055

Vulnerability from fkie_nvd - Published: 2026-05-01 15:16 - Updated: 2026-06-17 10:48

Severity

7.5 (High) - 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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/01f784fc9d0ab2a6dac45ee443620e517cb2a19b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4eaff1728d0e69b95933412241bbccf4f797dba8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/target/target_core_file.c"
          ],
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          "vendor": "Linux",
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              "status": "affected",
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            },
            {
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              "status": "affected",
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            },
            {
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              "versionType": "git"
            }
          ]
        },
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          "programFiles": [
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          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.18.22",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.19.12",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.0",
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            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
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      "value": "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\u0027t initialize the aio_cmd-\u003eiocb 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-\u003eki_write_stream \u003e max_write_streams\nin the block device.\n\nLet\u0027s just use kzalloc_flex when allocating the aio_cmd and let\nki_write_stream=0 to fix this issue."
    }
  ],
  "id": "CVE-2026-43055",
  "lastModified": "2026-06-17T10:48:50.877",
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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        "impactScore": 3.6,
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "NVD-CWE-noinfo"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-43055 (GCVE-0-2026-43055)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-08-05 12:25

Title

scsi: target: file: Use kzalloc_flex for aio_cmd

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/ce54802fe6bb78eb0…
https://git.kernel.org/stable/c/4eaff1728d0e69b95…
https://git.kernel.org/stable/c/01f784fc9d0ab2a6d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 , < ce54802fe6bb78eb0feffc66fed6a45d41ffc3ab (git) Affected: 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 , < 4eaff1728d0e69b95933412241bbccf4f797dba8 (git) Affected: 732f25a2895a8c1c54fb56544f0b1e23770ef4d7 , < 01f784fc9d0ab2a6dac45ee443620e517cb2a19b (git)
Linux	Linux	Affected: 6.16 Unaffected: 0 , < 6.16 (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/target/target_core_file.c"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.