HighCVE-2023-5178

    Kernel: use after free in nvmet_tcp_free_crypto in nvme (CVE-2023-5178)

    Published Last modified Sources: Siemens ProductCERT, Debian, CVE.org, Red Hat

    What is affected, what to do

    A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation.

    Update Red Hat Enterprise Linux 8 to version 0:4.18.0-513.9.1.rt7.311.el8_9, Red Hat Enterprise Linux 8 to version 0:4.18.0-513.9.1.el8_9, Red Hat Enterprise Linux 8.2 Advanced Update Support to version 0:4.18.0-193.128.1.el8_2.

    Affected
    • Red Hat Enterprise Linux 8 lt *..0:4.18.0-513.9.1.rt7.311.el8_9
    • Red Hat Enterprise Linux 8 lt *..0:4.18.0-513.9.1.el8_9
    • Red Hat Enterprise Linux 8.2 Advanced Update Support lt *..0:4.18.0-193.128.1.el8_2
    • Red Hat Enterprise Linux 8.2 Telecommunications Update Service lt *..0:4.18.0-193.128.1.rt13.179.el8_2
    • Red Hat Enterprise Linux 8.2 Telecommunications Update Service lt *..0:4.18.0-193.128.1.el8_2
    • Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions lt *..0:4.18.0-193.128.1.el8_2
    • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support lt *..0:4.18.0-305.114.1.el8_4
    • Red Hat Enterprise Linux 8.4 Telecommunications Update Service lt *..0:4.18.0-305.114.1.rt7.190.el8_4
    • Red Hat Enterprise Linux 8.4 Telecommunications Update Service lt *..0:4.18.0-305.114.1.el8_4
    • Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions lt *..0:4.18.0-305.114.1.el8_4
    • Red Hat Enterprise Linux 8.6 Extended Update Support lt *..0:4.18.0-372.87.1.el8_6
    • Red Hat Enterprise Linux 8.8 Extended Update Support lt *..0:4.18.0-477.43.1.el8_8
    • Red Hat Enterprise Linux 9 lt *..0:5.14.0-362.18.1.el9_3
    • Red Hat Enterprise Linux 9.0 Extended Update Support lt *..0:5.14.0-70.85.1.el9_0
    • Red Hat Enterprise Linux 9.0 Extended Update Support lt *..0:5.14.0-70.85.1.rt21.156.el9_0
    • Red Hat Enterprise Linux 9.2 Extended Update Support lt *..0:5.14.0-284.40.1.el9_2
    • Red Hat Enterprise Linux 9.2 Extended Update Support lt *..0:5.14.0-284.40.1.rt14.325.el9_2
    • Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 lt *..0:4.18.0-372.87.1.el8_6
    Fixed in
    • Red Hat Enterprise Linux 8 0:4.18.0-513.9.1.rt7.311.el8_9
    • Red Hat Enterprise Linux 8 0:4.18.0-513.9.1.el8_9
    • Red Hat Enterprise Linux 8.2 Advanced Update Support 0:4.18.0-193.128.1.el8_2
    • Red Hat Enterprise Linux 8.2 Telecommunications Update Service 0:4.18.0-193.128.1.rt13.179.el8_2
    • Red Hat Enterprise Linux 8.2 Telecommunications Update Service 0:4.18.0-193.128.1.el8_2
    • Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 0:4.18.0-193.128.1.el8_2
    • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.18.0-305.114.1.el8_4
    • Red Hat Enterprise Linux 8.4 Telecommunications Update Service 0:4.18.0-305.114.1.rt7.190.el8_4
    • Red Hat Enterprise Linux 8.4 Telecommunications Update Service 0:4.18.0-305.114.1.el8_4
    • Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 0:4.18.0-305.114.1.el8_4
    • Red Hat Enterprise Linux 8.6 Extended Update Support 0:4.18.0-372.87.1.el8_6
    • Red Hat Enterprise Linux 8.8 Extended Update Support 0:4.18.0-477.43.1.el8_8
    • Red Hat Enterprise Linux 9 0:5.14.0-362.18.1.el9_3
    • Red Hat Enterprise Linux 9.0 Extended Update Support 0:5.14.0-70.85.1.el9_0
    • Red Hat Enterprise Linux 9.0 Extended Update Support 0:5.14.0-70.85.1.rt21.156.el9_0
    • Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.40.1.el9_2
    • Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.40.1.rt14.325.el9_2
    • Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 0:4.18.0-372.87.1.el8_6

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    8.8

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    8.8

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: Siemens ProductCERT, Debian, CVE.org, Red Hat

    9.6 %

    EPSS score

    Moderate — model estimates 1-10% exploitation likelihood.

    Source: FIRST EPSS, percentile 95.5

    Show all metrics
    Severity
    High
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    120.66 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    8.8 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    8.8
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    9.6 %
    Moderate — model estimates 1-10% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    95.5
    Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-416

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation.

    Source: siemens_advisory, Debian Security Advisories, cvelistv5, redhat_csaf, NVD (NIST)

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    Red HatRed Hat Enterprise Linux 6
    • —
    • —
    Red HatRed Hat Enterprise Linux 7
    • —
    • —
    Red HatRed Hat Enterprise Linux 8
    • < 0:4.18.0-513.9.1.el8_9
    • < 0:4.18.0-513.9.1.rt7.311.el8_9
    • 0:4.18.0-513.9.1.el8_9
    • 0:4.18.0-513.9.1.rt7.311.el8_9
    Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support
    • < 0:4.18.0-193.128.1.el8_2
    • 0:4.18.0-193.128.1.el8_2
    Red HatRed Hat Enterprise Linux 8.2 Telecommunications Update Service
    • < 0:4.18.0-193.128.1.el8_2
    • < 0:4.18.0-193.128.1.rt13.179.el8_2
    • 0:4.18.0-193.128.1.el8_2
    • 0:4.18.0-193.128.1.rt13.179.el8_2
    Red HatRed Hat Enterprise Linux 8.2 Update Services for SAP Solutions
    • < 0:4.18.0-193.128.1.el8_2
    • 0:4.18.0-193.128.1.el8_2
    Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
    • < 0:4.18.0-305.114.1.el8_4
    • 0:4.18.0-305.114.1.el8_4
    Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update Service
    • < 0:4.18.0-305.114.1.el8_4
    • < 0:4.18.0-305.114.1.rt7.190.el8_4
    • 0:4.18.0-305.114.1.el8_4
    • 0:4.18.0-305.114.1.rt7.190.el8_4
    Red HatRed Hat Enterprise Linux 8.4 Update Services for SAP Solutions
    • < 0:4.18.0-305.114.1.el8_4
    • 0:4.18.0-305.114.1.el8_4
    Red HatRed Hat Enterprise Linux 8.6 Extended Update Support
    • < 0:4.18.0-372.87.1.el8_6
    • 0:4.18.0-372.87.1.el8_6
    Red HatRed Hat Enterprise Linux 8.8 Extended Update Support
    • < 0:4.18.0-477.43.1.el8_8
    • 0:4.18.0-477.43.1.el8_8
    Red HatRed Hat Enterprise Linux 9
    • < 0:5.14.0-362.18.1.el9_3
    • 0:5.14.0-362.18.1.el9_3
    Red HatRed Hat Enterprise Linux 9.0 Extended Update Support
    • < 0:5.14.0-70.85.1.el9_0
    • < 0:5.14.0-70.85.1.rt21.156.el9_0
    • 0:5.14.0-70.85.1.el9_0
    • 0:5.14.0-70.85.1.rt21.156.el9_0
    Red HatRed Hat Enterprise Linux 9.2 Extended Update Support
    • < 0:5.14.0-284.40.1.el9_2
    • < 0:5.14.0-284.40.1.rt14.325.el9_2
    • 0:5.14.0-284.40.1.el9_2
    • 0:5.14.0-284.40.1.rt14.325.el9_2
    Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8
    • < 0:4.18.0-372.87.1.el8_6
    • 0:4.18.0-372.87.1.el8_6
    netappactive_iq_unified_manager
    • —
    • —
    netappsolidfire_\&_hci_management_node
    • —
    • —
    netappsolidfire_\&_hci_storage_node
    • —
    • —

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxredhatenterprise_linux8.0
    Linuxredhatenterprise_linux9.0
    Linuxdebianlinuxbullseye
    Linuxlinuxlinux_kernel—

    Weakness classes (CWE)

    • CWE-416Use After Free

      Variant

      The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

      Entry at MITRE CWE-416

    References & sources

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedRed Hat

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      Source identifier: secalert@redhat.com

    2. Record modifiedCVE Program

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      https://access.redhat.com/errata/RHSA-2024:0378
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      Referenceremoved
      https://access.redhat.com/errata/RHSA-2024:0386
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      Referenceremoved
      https://access.redhat.com/errata/RHSA-2024:0412
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      https://access.redhat.com/errata/RHSA-2024:0431
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      https://access.redhat.com/errata/RHSA-2024:0432
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      https://access.redhat.com/errata/RHSA-2024:0461
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      https://access.redhat.com/errata/RHSA-2024:0554
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      https://access.redhat.com/errata/RHSA-2024:0575
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      https://access.redhat.com/errata/RHSA-2024:1268
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      Referenceremoved
      https://access.redhat.com/errata/RHSA-2024:1269
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      Referenceremoved
      https://access.redhat.com/errata/RHSA-2024:1278
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      Referenceremoved
      https://access.redhat.com/security/cve/CVE-2023-5178
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      Referenceremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2241924
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      Referenceremoved
      https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
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      Referenceremoved
      https://lore.kernel.org/linux-nvme/20231002105428.226515-1-sagi@grimberg.me/
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      Referenceremoved
      https://security.netapp.com/advisory/ntap-20231208-0004/
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7370 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7379 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7418 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7548 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7549 Types: Third Party Advisory
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      https://access.redhat.com/errata/RHSA-2023:7551 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7554 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7557 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2023:7559 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0340 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0378 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0386 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0412 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0431 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0432 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0461 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0554 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:0575 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:1268 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:1269 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2024:1278 Types: Third Party Advisory
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      Reference typeremoved
      https://access.redhat.com/security/cve/CVE-2023-5178 Types: Third Party Advisory
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      Reference typeremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2241924 Types: Issue Tracking, Third Party Advisory
      —
      Reference typeremoved
      https://lore.kernel.org/linux-nvme/20231002105428.226515-1-sagi@grimberg.me/ Types: Mailing List, Patch, Vendor Advisory
      —

      Source identifier: af854a3a-2127-422b-91ae-364da2661108

    3. Record modifiedSiemens ADP

      Show 3 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2023/5xxx/CVE-2023-5178.json">CVE-2023-5178</a>
      Referenceadded
      —
      https://cert-portal.siemens.com/productcert/html/ssa-613116.html
      Referenceadded
      —
      https://cert-portal.siemens.com/productcert/html/ssa-794697.html

      Source identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

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    <a href="https://intel.neosec.eu/en/cve/CVE-2023-5178"><img src="https://intel.neosec.eu/badge/cve/CVE-2023-5178.svg?lang=en" alt="CVE-2023-5178 – NEOSEC Intel" height="20"></a>