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

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-20 13:43
VLAI
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 , < 55970f238d495517edc961d55c44c772594d0969 (git)
Affected: 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 , < 2c8f4742bb76117d735f92a3932d85239b16c494 (git)
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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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{
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            "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",
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    "dateReserved": "2026-07-19T07:54:57.038Z",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


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