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CVE-2026-98453

smb: client: close handle after create-context parsing failure

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, 21:45:32 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

14 ranges
Linux version evidence

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

affected

13fb0fc4917621f3dfa285a27eaf7151d770b5e5 → before d4c05b5cb0a3132453e36a300d45de44bf6783c4

git versions

890bc4fac3c0973a49cac35f634579bebba7fe48 → before ee61f1dc516d97afa79908140d0a8c556c2fe90c

git versions

1ae3c59355dc9882e09c020afe8ffbd895ad0f29 → before 007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd

git versions

17a0f64cc02d4972e21c733d9f21d1c512963afa → before eaa97a196a107d4ef8775df2248181624151812e

git versions

af1689a9b7701d9907dfc84d2a4b57c4bc907144 → before 80c67cc71d32ccafc89a29b669243b40d81b930f

git versions

af1689a9b7701d9907dfc84d2a4b57c4bc907144 → before f09875ff901e933e7b22c913daf51d21e9d93a45

git versions

af1689a9b7701d9907dfc84d2a4b57c4bc907144 → before cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb

git versions

af1689a9b7701d9907dfc84d2a4b57c4bc907144 → before 566820af017e81497fb5e9d3ad6e7ffe2828bc8b

git versions

6726429c18c62dbf5e96ebbd522f262e016553fb

git versions

5.10.211 → before 5.10.273

semver versions

5.15.150 → before 5.15.224

semver versions

6.1.79 → before 6.1.191

semver versions

6.6.8 → before 6.6.160

semver versions

5.4.277 → before 5.5

semver versions

unaffected

unknown

Other versions: unaffected

Linux · Linux

Linux

10 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

5.10.273 → through 5.10.*

semver versions

5.15.224 → through 5.15.*

semver versions

6.1.191 → through 6.1.*

semver versions

6.6.160 → through 6.6.*

semver versions

6.12.113 → through 6.12.*

semver versions

6.18.56 → through 6.18.*

semver versions

7.2.9 → 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: close handle after create-context parsing failure

SMB2_open() accounts a successful CREATE response as a remote open before parsing its create contexts. If smb2_parse_contexts() rejects malformed context data, SMB2_open() returns without closing the handle, leaving the server-side handle open and num_remote_opens elevated.

Close the handle after a post-CREATE context parsing failure so the error path releases the remote resource and balances the open count.

References

8 sources
git.kernel.org/stable/c/d4c05b5cb0a3132453e36a300d45de44bf6783c4
Source referenceLinux
git.kernel.org/stable/c/ee61f1dc516d97afa79908140d0a8c556c2fe90c
Source referenceLinux
git.kernel.org/stable/c/007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd
Source referenceLinux
git.kernel.org/stable/c/eaa97a196a107d4ef8775df2248181624151812e
Source referenceLinux
git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f
Source referenceLinux
git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45
Source referenceLinux
View 2 more references
git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb
Source referenceLinux
git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b
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-2026-98453

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): 5.10.211

Before: 5.10.273

Vulnerable product

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

From (inclusive): 5.15.150

Before: 5.15.224

Vulnerable product

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

From (inclusive): 6.1.79

Before: 6.1.191

Vulnerable product

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

From (inclusive): 6.6.8

Before: 6.6.160

Vulnerable product

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

From (inclusive): 6.7

Before: 6.12.113

Vulnerable product

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

From (inclusive): 6.7

Before: 6.18.56

Vulnerable product

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

From (inclusive): 6.7

Before: 7.2.9

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): 5.4.277

Applicability preview
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    "nodes": [
      {
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        "negate": false,
        "cpeMatch": [
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            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.10.211",
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            "vulnerable": true,
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  }
]
Contributing organizations · 1
Linux

Assigning organization

2026-10-30

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
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

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