CVE-2026-93210

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: harden DFS cache against invalid target hints Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is NULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always valid. In preparation for clearing ce->tgthint in free_tgts(), harden callers of get_tgt_name() against ERR_PTR results and harden dfs_cache_noreq_update_tgthint() against NULL pointer dereferences.

Overview

State: PUBLISHED
Assigner (CNA): Linux
CVSS severity: —
CVSS score: —
CVSS vector: —
Effective score: no score available from CNA, NVD, or AI yet
CWE(s): —
Reserved: 2026-09-17
Published: 2026-09-24 15:10 UTC
Last updated: 2026-09-25 12:42 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/93xxx/CVE-2026-93210.json

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Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-24 16:17:15 UTC
NVD last modified: 2026-09-24 16:17:15 UTC

AI-forensic CVSS estimate

Used only when a CVE has no official CVSS from its CNA or NVD. An LLM estimates the v3.1 base score from the description; a HIGH/CRITICAL estimate promotes the CVE to a Threat.

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European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-85939
Assigner: Linux
Published: Sep 24, 2026, 3:10:33 PM
Updated: Sep 24, 2026, 3:10:33 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.0000
Vendors: Linux
Products: Linux (0 <6.18.50)

Linux (patch: 6.12.109)

Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6cb7f9fed8f40f28fbd464ca99c946951afc0952)

Linux (0 <7.2.4)

Linux (patch: 6.18.50)

Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7e32da6047d9afdae8dd17b87b4c8d97363c4ee2)

Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a48328afbc3f63e3b9de8827e2e16c15b17976f7)

Linux (patch: 6.1.188)

Linux (patch: 7.3-rc1)

Linux (patch: 7.2.4)

Linux (0 <6.12.109)

Linux (0 <6.6.157)

Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <66dbcdbb0cadffd12eb8f2b115fd57d384c5109d)

Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <846f0709559b9e27024e126a80bc7afb76516912)

Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bf86c08123c6ab8c61cc0be1dad7540db93738ff)

Linux (0 <6.1.188)

Linux (patch: 6.6.157)
Aliases: GHSA-whr7-9fmh-x37r

ENISA description: In the Linux kernel, the following vulnerability has been resolved: smb: client: harden DFS cache against invalid target hints Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is NULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always valid. In preparation for clearing ce->tgthint in free_tgts(), harden callers of get_tgt_name() against ERR_PTR results and harden dfs_cache_noreq_update_tgthint() against NULL pointer dereferences.

EUVD references (6)

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`54be1f6c1c37498bba557049df646cc239fa37e3` (affected), `54be1f6c1c37498bba557049df646cc239fa37e3` (affected), `54be1f6c1c37498bba557049df646cc239fa37e3` (affected), `54be1f6c1c37498bba557049df646cc239fa37e3` (affected), `54be1f6c1c37498bba557049df646cc239fa37e3` (affected), `54be1f6c1c37498bba557049df646cc239fa37e3` (affected)	—
Linux	Linux	`5.0` (affected), `0` (unaffected), `6.1.188` (unaffected), `6.6.157` (unaffected), `6.12.109` (unaffected), `6.18.50` (unaffected), `7.2.4` (unaffected), `7.3-rc1` (unaffected)	—

Vendor references (6)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://git.kernel.org/stable/c/66dbcdbb0cadffd12eb8f2b115fd57d384c5109d 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6cb7f9fed8f40f28fbd464ca99c946951afc0952 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7e32da6047d9afdae8dd17b87b4c8d97363c4ee2 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/846f0709559b9e27024e126a80bc7afb76516912 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a48328afbc3f63e3b9de8827e2e16c15b17976f7 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bf86c08123c6ab8c61cc0be1dad7540db93738ff 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remediations (10)

Security Advisory - Action Required - Active Exploitation of CVE-2026 ...

web:blog.checkpoint.com

CVE - 2026 -93616 is a newly discovered zero-day vulnerability in Security Management, and a fix is available now as part of this advisory. Fixes are available for both vulnerabilities. Customers running affected versions should install the applicable fixes immediately. Affected versions and remediation instructions are detailed below.

2026-09-25 10:45 UTC
CISA Requires Federal Agencies to Patch Critical Vulnerabilities Within ...

web:cybersecuritynews.com

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued Binding Operational Directive (BOD) 26-04, titled "Prioritizing Security Updates Based on Risk," compelling all Federal Civilian Executive Branch (FCEB) agencies to remediate the most dangerous known exploited vulnerabilities within just three calendar days.

2026-09-25 10:45 UTC
Adobe Security Bulletins and Advisories | Security

web:helpx.adobe.com

This page contains important information regarding security vulnerabilities that could affect specific versions of Adobe products. Use this information to take the prescribed corrective actions.

2026-09-25 10:45 UTC
VMware Telco Cloud response to VMSA-2026-0006 (CVE-2026-59309, CVE-2026 ...

web:knowledge.broadcom.com

VMware Telco Cloud response to VMSA- 2026 -0006 ( CVE - 2026 -59309, CVE - 2026 -59310, CVE - 2026 -47876, CVE - 2026 -41703, CVE - 2026 -41709) Patch Availability for VMware Telco Cloud Platform / Telco Cloud Infrastructure

2026-09-25 10:45 UTC
Cisco Advance Notification for Publication of September 16, 2026 ...

web:sec.cloudapps.cisco.com

On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-09-25 10:45 UTC
CISA: Ransomware Now Exploits Critical VMware vCenter Bug

web:tech-insider.org

CISA confirms ransomware gangs are exploiting CVE - 2026 -59310, a CVSS 9.8 VMware vCenter RCE flaw. Patch details, KEV deadline, and fixes inside.

2026-09-25 10:45 UTC
September 2026 Patch Tuesday: CISO Executive Summary

web:www.action1.com

This CISO-focused summary highlights the vulnerabilities and critical infrastructure risks that should take priority for remediation following Microsoft's September 2026 Patch Tuesday release.

2026-09-25 10:45 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-25 10:45 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-25 10:45 UTC
Track Critical Vulnerabilities with Qualys Security Advisories

web:www.qualys.com

Get timely updates on security threats, vulnerabilities, and recommended solutions through Qualys security advisories, helping you secure your infrastructure.

2026-09-25 10:45 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-93210.json.

{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/dfs_cache.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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            },
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          ]
        },
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          ],
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          "vendor": "Linux",
          "versions": [
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            },
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            },
            {
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              "status": "unaffected",
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            },
            {
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              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: harden DFS cache against invalid target hints\n\nCurrently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is\nNULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always\nvalid.\n\nIn preparation for clearing ce->tgthint in free_tgts(), harden callers\nof get_tgt_name() against ERR_PTR results and harden\ndfs_cache_noreq_update_tgthint() against NULL pointer dereferences."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T12:42:37.060Z",
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      },
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        {
          "url": "https://git.kernel.org/stable/c/6cb7f9fed8f40f28fbd464ca99c946951afc0952"
        },
        {
          "url": "https://git.kernel.org/stable/c/66dbcdbb0cadffd12eb8f2b115fd57d384c5109d"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/7e32da6047d9afdae8dd17b87b4c8d97363c4ee2"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf86c08123c6ab8c61cc0be1dad7540db93738ff"
        }
      ],
      "title": "smb: client: harden DFS cache against invalid target hints",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93210",
    "datePublished": "2026-09-24T15:10:33.577Z",
    "dateReserved": "2026-09-17T16:02:15.093Z",
    "dateUpdated": "2026-09-25T12:42:37.060Z",
    "state": "PUBLISHED"
  },
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}