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CVE-2026-98685

smb: client: discard post-EOF pagecache when extending a file via clone range

Products / packages Linux

Published

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Severity and exploitation

Not in CISA KEVNo CVSS score

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 20:55:32 UTC

Severity

unknown

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

In the Linux kernel, the following vulnerability has been resolved:

Source excerpt · Linux

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Linux · Linux

Linux

8 ranges
Linux version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

c54fc3a4f375663f2361a9cbb2955fb4ef912879 → before eba974d6c850e77db87f6f9ae343164227dffefc

git versions

c54fc3a4f375663f2361a9cbb2955fb4ef912879 → before 7beb2f2a58023b2ff28fd52bdb72bed74257ee04

git versions

c54fc3a4f375663f2361a9cbb2955fb4ef912879 → before 15bb9f1d3e967e328649e92a1451e60a0dc66118

git versions

c54fc3a4f375663f2361a9cbb2955fb4ef912879 → before 4721587f96cb8de8164f3fd203093a0875560999

git versions

358bd5f436d820bb758833050aae065b35d6986c

git versions

43801359c8971cc49b4a4db5015fba77fbd09c32

git versions

6.1.68 → before 6.2

semver versions

6.6.7 → before 6.7

semver versions

unaffected

unknown

Other versions: unaffected

Linux · Linux

Linux

6 ranges
Linux version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

6.7

unaffected

0 → before 6.7

semver versions

6.12.117 → through 6.12.*

semver versions

6.18.61 → through 6.18.*

semver versions

7.2.10 → through 7.2.*

semver versions

7.3 → through *

original_commit_for_fix versions

unknown

Other versions: affected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

In the Linux kernel, the following vulnerability has been resolved:

smb: client: discard post-EOF pagecache when extending a file via clone range

cifs_remap_file_range() discarded the pagecache only for the folios overlapping the destination region, so when a clone extends the file the folio straddling the old EOF - which may hold data dirtied past EOF through an mmap - was never dropped and became visible as file content once the file was extended.

Start the discard at the smaller of fstart and the old EOF. i_size is still old here, so nothing past the old EOF is flushed to the server.

References

4 sources
git.kernel.org/stable/c/eba974d6c850e77db87f6f9ae343164227dffefc
Source referenceLinux
git.kernel.org/stable/c/7beb2f2a58023b2ff28fd52bdb72bed74257ee04
Source referenceLinux
git.kernel.org/stable/c/15bb9f1d3e967e328649e92a1451e60a0dc66118
Source referenceLinux
git.kernel.org/stable/c/4721587f96cb8de8164f3fd203093a0875560999
Source referenceLinux

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification · not supplied
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-98685

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

Linux · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.7

Before: 6.12.117

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.7

Before: 6.18.61

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.7

Before: 7.2.10

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.7

Before: 7.3

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.1.68

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.6.7

Applicability preview
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Contributing organizations · 1
Linux

Assigning organization

2026-11-10

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2026-98685

    Observed 2026-11-10T18:25:15.691Z · upstream updated 2026-11-10T18:15:17.687Z

    Product or version evidence changed

    before

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        "version": "43801359c8971cc49b4a4db5015fba77fbd09c32",
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      {
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        "versionType": "semver"
      },
      {
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        "versionType": "semver"
      }
    ],
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  },
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        "version": "0",
        "status": "unaffected",
        "lessThan": "6.7",
        "versionType": "semver"
      },
      {
        "version": "6.18.61",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.10",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "status": "unaffected",
        "lessThanOrEqual": "*",
        "versionType": "original_commit_for_fix"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-98685"
  }
]

    after

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    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
        "status": "affected",
        "lessThan": "eba974d6c850e77db87f6f9ae343164227dffefc",
        "versionType": "git"
      },
      {
        "version": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
        "status": "affected",
        "lessThan": "7beb2f2a58023b2ff28fd52bdb72bed74257ee04",
        "versionType": "git"
      },
      {
        "version": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
        "status": "affected",
        "lessThan": "15bb9f1d3e967e328649e92a1451e60a0dc66118",
        "versionType": "git"
      },
      {
        "version": "c54fc3a4f375663f2361a9cbb2955fb4ef912879",
        "status": "affected",
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        "versionType": "git"
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        "version": "43801359c8971cc49b4a4db5015fba77fbd09c32",
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        "versionType": "git"
      },
      {
        "version": "6.1.68",
        "status": "affected",
        "lessThan": "6.2",
        "versionType": "semver"
      },
      {
        "version": "6.6.7",
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        "lessThan": "6.7",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
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  },
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    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
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        "version": "6.7",
        "status": "affected"
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      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.7",
        "versionType": "semver"
      },
      {
        "version": "6.12.117",
        "status": "unaffected",
        "lessThanOrEqual": "6.12.*",
        "versionType": "semver"
      },
      {
        "version": "6.18.61",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.10",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      },
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        "version": "7.3",
        "status": "unaffected",
        "lessThanOrEqual": "*",
        "versionType": "original_commit_for_fix"
      }
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    "cpes": [],
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    References changed

    before

    [
  "https://git.kernel.org/stable/c/7beb2f2a58023b2ff28fd52bdb72bed74257ee04",
  "https://git.kernel.org/stable/c/15bb9f1d3e967e328649e92a1451e60a0dc66118",
  "https://git.kernel.org/stable/c/4721587f96cb8de8164f3fd203093a0875560999"
]

    after

    [
  "https://git.kernel.org/stable/c/eba974d6c850e77db87f6f9ae343164227dffefc",
  "https://git.kernel.org/stable/c/7beb2f2a58023b2ff28fd52bdb72bed74257ee04",
  "https://git.kernel.org/stable/c/15bb9f1d3e967e328649e92a1451e60a0dc66118",
  "https://git.kernel.org/stable/c/4721587f96cb8de8164f3fd203093a0875560999"
]
    Environment requirements changed

    before

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              },
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                "vulnerable": true,
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                "versionStartIncluding": "6.1.68"
              },
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                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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    after

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                "vulnerable": true,
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                "vulnerable": true,
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]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.