Vulnerability-Lookup

GHSA-H9J7-FW85-WM4J

Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31

Details

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

smb: client: clean up failed cached directory opens

open_cached_dir() sends CREATE and QUERY_INFO as a compound request. If the CREATE succeeds but a later command returns an error, the function must retain the CREATE FID so common cleanup can issue SMB2_close(). It also must not treat a response error as a valid CREATE.

Validate the CREATE response before using its fields, record the FIDs, and mark the handle open before handling errors from later compound commands. Move the -EREMCHG reconnect handling before response validation so a missing response does not hide the reconnect request. Count the handle when it is marked open; confirmed close responses decrement the counter, while existing close retry behavior remains best effort on transport failures.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98452"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:16:55Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: clean up failed cached directory opens\n\nopen_cached_dir() sends CREATE and QUERY_INFO as a compound request. If\nthe CREATE succeeds but a later command returns an error, the function\nmust retain the CREATE FID so common cleanup can issue SMB2_close(). It\nalso must not treat a response error as a valid CREATE.\n\nValidate the CREATE response before using its fields, record the FIDs, and\nmark the handle open before handling errors from later compound commands.\nMove the -EREMCHG reconnect handling before response validation so a\nmissing response does not hide the reconnect request. Count the handle\nwhen it is marked open; confirmed close responses decrement the counter,\nwhile existing close retry behavior remains best effort on transport\nfailures.",
  "id": "GHSA-h9j7-fw85-wm4j",
  "modified": "2026-10-18T18:31:49Z",
  "published": "2026-10-18T18:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98452"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48958ddda3d7eee3600261e2d90671f63e055dc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c1509598a4fdfb54cb09ce33e4405bd6dbd8295"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abab661eed00fa102d3c35ddf1cce4f687e718c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2ff5fb93ea83034025850266b5eed391f96b825"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98452 (GCVE-0-2026-98452)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:15 – Updated: 2026-10-19 09:19

Title

smb: client: clean up failed cached directory opens

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: clean up failed cached directory opens open_cached_dir() sends CREATE and QUERY_INFO as a compound request. If the CREATE succeeds but a later command returns an error, the function must retain the CREATE FID so common cleanup can issue SMB2_close(). It also must not treat a response error as a valid CREATE. Validate the CREATE response before using its fields, record the FIDs, and mark the handle open before handling errors from later compound commands. Move the -EREMCHG reconnect handling before response validation so a missing response does not hide the reconnect request. Count the handle when it is marked open; confirmed close responses decrement the counter, while existing close retry behavior remains best effort on transport failures.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/48958ddda3d7eee36…
https://git.kernel.org/stable/c/abab661eed00fa102…
https://git.kernel.org/stable/c/7c1509598a4fdfb54…
https://git.kernel.org/stable/c/d2ff5fb93ea830340…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b0f6df737a1c5d9d5ff90cc946205d8af46cc067 , < 48958ddda3d7eee3600261e2d90671f63e055dc4 (git) Affected: b0f6df737a1c5d9d5ff90cc946205d8af46cc067 , < abab661eed00fa102d3c35ddf1cce4f687e718c1 (git) Affected: b0f6df737a1c5d9d5ff90cc946205d8af46cc067 , < 7c1509598a4fdfb54cb09ce33e4405bd6dbd8295 (git) Affected: b0f6df737a1c5d9d5ff90cc946205d8af46cc067 , < d2ff5fb93ea83034025850266b5eed391f96b825 (git)
Linux	Linux	Affected: 5.1 Unaffected: 0 , < 5.1 (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/cached_dir.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "abab661eed00fa102d3c35ddf1cce4f687e718c1",
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          "versions": [
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              "status": "affected",
              "version": "5.1"
            },
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              "lessThan": "5.1",
              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
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              "status": "unaffected",
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      ],
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    "state": "PUBLISHED"
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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.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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