Vulnerability-Lookup

GHSA-83GV-5W7G-5PV2

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-20 15:32

Details

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.

Severity

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64160"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:58Z",
    "severity": "CRITICAL"
  },
  "details": "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": "GHSA-83gv-5w7g-5pv2",
  "modified": "2026-07-20T15:32:02Z",
  "published": "2026-07-19T18:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64160"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-20 13:43

Title

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

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.

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

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)

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{
  "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": [
            {
              "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
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              "negate": false,
              "operator": "OR"
            }
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        }
      ],
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        {
          "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T13:43:55.325Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"
        }
      ],
      "title": "netfs: Fix potential for tearing in -\u003eremote_i_size and -\u003ezero_point",
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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": "2026-07-20T13:43:55.325Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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.

Action not permitted

GHSA-83GV-5W7G-5PV2

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

Tags

Sightings

Nomenclature