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CVE-2024-26594

ksmbd: validate mech token in session setup

CVSS 3.1 Critical 9.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate mech token in session setup If client send invalid mech token in session setup request, ksmbd validate and make the error if it is invalid.

Official description from the CVE record, published by Linux. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

CVSS 3.1 Critical 9.1

Score published by Linux in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

  • Attack vector: Network

    The vulnerable component can be reached over a network, possibly from the Internet.

  • Attack complexity: Low

    No special conditions are needed. The attack can be repeated at will.

  • Privileges required: None

    No account or privileges are needed.

  • User interaction: None

    No action from any user is needed.

  • Scope: Unchanged

    The impact stays within the vulnerable component.

  • Confidentiality impact: High

    Serious or total effect on the secrecy of data.

  • Integrity impact: None

    No effect on the trustworthiness of data.

  • Availability impact: High

    Serious or total effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.51248 (51.2% probability)
Percentile
98.9%
Scores of
Nov 10, 2026
Model
v2026.06.15

CISA assessment as of Feb 23, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.
Automatable
no
Technical impact
partial

Affected products

Products listed in the CVE record, as the CNA published them.

  • Linux

    • affected: 0626e6641f6b467447c81dd7678a69c66f7746cf up to before dd1de9268745f0eac83a430db7afc32cbd62e84b
    • affected: 0626e6641f6b467447c81dd7678a69c66f7746cf up to before 6eb8015492bcc84e40646390e50a862b2c0529c9
    • affected: 0626e6641f6b467447c81dd7678a69c66f7746cf up to before a2b21ef1ea4cf632d19b3a7cc4d4245b8e63202a
    • affected: 0626e6641f6b467447c81dd7678a69c66f7746cf up to before 5e6dfec95833edc54c48605a98365a7325e5541e
    • affected: 0626e6641f6b467447c81dd7678a69c66f7746cf up to before 92e470163d96df8db6c4fa0f484e4a229edb903d

  • Linux

    • affected: 5.15
    • unaffected: before 5.15
    • unaffected: 5.15.149 up to 5.15.*
    • unaffected: 6.1.75 up to 6.1.*
    • unaffected: 6.6.14 up to 6.6.*
    • unaffected: 6.7.2 up to 6.7.*
    • unaffected: 6.8 up to *

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

  1. ID reserved
  2. Record published
  3. Record last updated

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:53 UTC. Sources and licenses