Vulnerability-Lookup

FKIE_CVE-2026-64160

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-08-17 15:05

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494	Patch
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/9p/v9fs_vfs.h",
            "fs/9p/vfs_inode.c",
            "fs/9p/vfs_inode_dotl.c",
            "fs/afs/file.c",
            "fs/afs/inode.c",
            "fs/afs/internal.h",
            "fs/afs/write.c",
            "fs/netfs/buffered_read.c",
            "fs/netfs/buffered_write.c",
            "fs/netfs/direct_write.c",
            "fs/netfs/misc.c",
            "fs/netfs/write_collect.c",
            "fs/smb/client/cifsfs.c",
            "fs/smb/client/cifssmb.c",
            "fs/smb/client/file.c",
            "fs/smb/client/inode.c",
            "fs/smb/client/readdir.c",
            "fs/smb/client/smb2ops.c",
            "fs/smb/client/smb2pdu.c",
            "include/linux/netfs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "55970f238d495517edc961d55c44c772594d0969",
              "status": "affected",
              "version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
              "versionType": "git"
            },
            {
              "lessThan": "2c8f4742bb76117d735f92a3932d85239b16c494",
              "status": "affected",
              "version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/9p/v9fs_vfs.h",
            "fs/9p/vfs_inode.c",
            "fs/9p/vfs_inode_dotl.c",
            "fs/afs/file.c",
            "fs/afs/inode.c",
            "fs/afs/internal.h",
            "fs/afs/write.c",
            "fs/netfs/buffered_read.c",
            "fs/netfs/buffered_write.c",
            "fs/netfs/direct_write.c",
            "fs/netfs/misc.c",
            "fs/netfs/write_collect.c",
            "fs/smb/client/cifsfs.c",
            "fs/smb/client/cifssmb.c",
            "fs/smb/client/file.c",
            "fs/smb/client/inode.c",
            "fs/smb/client/readdir.c",
            "fs/smb/client/smb2ops.c",
            "fs/smb/client/smb2pdu.c",
            "include/linux/netfs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0DB20DAA-322B-469E-BE32-85C48AAC7796",
              "versionEndExcluding": "7.0.11",
              "versionStartIncluding": "5.18",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
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              "vulnerable": true
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix potential for tearing in -\u003eremote_i_size and -\u003ezero_point\n\nFix potential tearing in using -\u003eremote_i_size and -\u003ezero_point by copying\ni_size_read() and i_size_write() and using the same seqcount as for i_size.\n\nWe need to make sure that netfslib and the filesystems that use it always\nhold i_lock whilst updating any of the sizes to prevent i_size_seqcount\nfrom getting corrupted."
    }
  ],
  "id": "CVE-2026-64160",
  "lastModified": "2026-08-17T15:05:03.423",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T16:17:58.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-64160 (GCVE-0-2026-64160)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-08-05 12:39

Title

netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

Summary

Severity

9.8 (Critical)


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

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/55970f238d495517e…
https://git.kernel.org/stable/c/2c8f4742bb76117d7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 , < 55970f238d495517edc961d55c44c772594d0969 (git) Affected: 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 , < 2c8f4742bb76117d735f92a3932d85239b16c494 (git)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/9p/v9fs_vfs.h",
            "fs/9p/vfs_inode.c",
            "fs/9p/vfs_inode_dotl.c",
            "fs/afs/file.c",
            "fs/afs/inode.c",
            "fs/afs/internal.h",
            "fs/afs/write.c",
            "fs/netfs/buffered_read.c",
            "fs/netfs/buffered_write.c",
            "fs/netfs/direct_write.c",
            "fs/netfs/misc.c",
            "fs/netfs/write_collect.c",
            "fs/smb/client/cifsfs.c",
            "fs/smb/client/cifssmb.c",
            "fs/smb/client/file.c",
            "fs/smb/client/inode.c",
            "fs/smb/client/readdir.c",
            "fs/smb/client/smb2ops.c",
            "fs/smb/client/smb2pdu.c",
            "include/linux/netfs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/9p/v9fs_vfs.h",
            "fs/9p/vfs_inode.c",
            "fs/9p/vfs_inode_dotl.c",
            "fs/afs/file.c",
            "fs/afs/inode.c",
            "fs/afs/internal.h",
            "fs/afs/write.c",
            "fs/netfs/buffered_read.c",
            "fs/netfs/buffered_write.c",
            "fs/netfs/direct_write.c",
            "fs/netfs/misc.c",
            "fs/netfs/write_collect.c",
            "fs/smb/client/cifsfs.c",
            "fs/smb/client/cifssmb.c",
            "fs/smb/client/file.c",
            "fs/smb/client/inode.c",
            "fs/smb/client/readdir.c",
            "fs/smb/client/smb2ops.c",
            "fs/smb/client/smb2pdu.c",
            "include/linux/netfs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "versions": [
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              "version": "5.18"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
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              "lang": "en",
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            }
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        "dateUpdated": "2026-08-05T12:39:50.187Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
          "url": "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64160",
    "datePublished": "2026-07-19T15:40:47.063Z",
    "dateReserved": "2026-07-19T07:54:57.038Z",
    "dateUpdated": "2026-08-05T12:39:50.187Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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.

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FKIE_CVE-2026-64160

CVE-2026-64160 (GCVE-0-2026-64160)

Tags

Sightings

Nomenclature