CVE-2026-64157 (GCVE-0-2026-64157)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
netfs: Fix partial invalidation of streaming-write folio
Summary
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix partial invalidation of streaming-write folio In netfs_invalidate_folio(), if the region of a partial invalidation overlaps the front (but not all) of a dirty write cached in a streaming write page (dirty, but not uptodate, with the dirty region tracked by a netfs_folio struct), the function modifies the dirty region - but incorrectly as it moves the region forward by setting the start to the start, not the end, of the invalidation region. Fix this by setting finfo->dirty_offset to the end of the invalidation region (iend).
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cce6bfa6ca0e30af9927b0074c97fe6a92f28092 , < f6b2569ae29b666fd15ff2848684c445ba442a39 (git)
Affected: cce6bfa6ca0e30af9927b0074c97fe6a92f28092 , < 3d9601c029b934b5b6a10f99791467b10eb6b211 (git)
Affected: cce6bfa6ca0e30af9927b0074c97fe6a92f28092 , < 6a3d27116be2c5fb9a03d5cf37c486ac517f3689 (git)
Affected: cce6bfa6ca0e30af9927b0074c97fe6a92f28092 , < 6d91acc7fb85d33ea58fca9b964a32a453937f4b (git)
Affected: e2814004138a541110d4b2dc254a8f619c2c4ce0 (git)
Affected: 6.10.8 , < 6.11 (semver)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix partial invalidation of streaming-write folio\n\nIn netfs_invalidate_folio(), if the region of a partial invalidation\noverlaps the front (but not all) of a dirty write cached in a streaming\nwrite page (dirty, but not uptodate, with the dirty region tracked by a\nnetfs_folio struct), the function modifies the dirty region - but\nincorrectly as it moves the region forward by setting the start to the\nstart, not the end, of the invalidation region.\n\nFix this by setting finfo-\u003edirty_offset to the end of the invalidation\nregion (iend)."
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        "shortName": "Linux"
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      "title": "netfs: Fix partial invalidation of streaming-write folio",
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    "cveId": "CVE-2026-64157",
    "datePublished": "2026-07-19T15:40:44.964Z",
    "dateReserved": "2026-07-19T07:54:57.038Z",
    "dateUpdated": "2026-07-19T15:40:44.964Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-20T12:12:09+00:00",
      "cve": "CVE-2026-64157",
      "id": "CVE-2026-64157",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfs: Fix partial invalidation of streaming-write folio",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64157.json",
      "version": "3"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.