HighCVE-2024-26872

    Linux Kernel: Use-After-Free (CVE-2024-26872)

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

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    What is affected, what to do

    In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Do not register event handler until srpt device is fully setup Upon rare occasions, KASAN reports a use-after-free Write in srpt_refresh_port(). This seems to be because an event handler is registered before the srpt device is fully setup and a race condition upon error may leave a partially setup event handler in place.

    Update Linux Kernel to version 5.10.214, Linux Kernel to version 5.15.153, Linux Kernel to version 6.1.83.

    Affected
    • Linux Kernel lt 3.3..5.10.214
    • Linux Kernel lt 5.11..5.15.153
    • Linux Kernel lt 5.16..6.1.83
    • Linux Kernel lt 6.2..6.6.23
    • Linux Kernel lt 6.7..6.7.11
    • Linux Kernel lt 6.8..6.8.2
    Fixed in
    • Linux Kernel 5.10.214
    • Linux Kernel 5.15.153
    • Linux Kernel 6.1.83
    • Linux Kernel 6.6.23
    • Linux Kernel 6.7.11
    • Linux Kernel 6.8.2
    • Linux Kernel 6.9

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

    Metrics

    7.8

    XIEM Effective CVSS

    Highest available CVSS rating from NVD and vendor data.

    Source: Vendor (CNA), CVSS v3

    7.8

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: Siemens ProductCERT, SUSE, Debian, Red Hat, BSI, CVE.org, EUVD

    0.2 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 15.2

    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
    45.71 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
    7.8 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
    7.8
    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
    0.2 %
    Low — model estimates < 1% 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
    15.2
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    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
    CISA assessment (SSVC)
    Exploitation: none known · not automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 28 May 2024

    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

    In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Do not register event handler until srpt device is fully setup Upon rare occasions, KASAN reports a use-after-free Write in srpt_refresh_port(). This seems to be because an event handler is registered before the srpt device is fully setup and a race condition upon error may leave a partially setup event handler in place. Instead, only register the event handler after srpt device initialization is complete.

    Source: siemens_advisory, suse_csaf, Debian Security Advisories, redhat_csaf, BSI CSAF, BSI WID Portal, cvelistv5, ENISA EUVD, 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
    LinuxLinux
    • 6.8 – < 6.8.2
    • 5.11 – < 5.15.153
    • 5.16 – < 6.1.83
    • —
    • 6.2 – < 6.6.23
    • 6.7 – < 6.7.11
    • 3.3 – < 5.10.214
    • 6.8.2
    • 5.15.153
    • 6.1.83
    • 6.9
    • 6.6.23
    • 6.7.11
    • 5.10.214

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxdebiandebian_linux10.0
    Linuxdebianlinuxbullseye
    Linuxlinuxlinux_kernel—

    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 modifiedLinux

      Show 21 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090
      Referenceadded
      —
      https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346
      Referenceadded
      —
      https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217
      Referenceadded
      —
      https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5
      Referenceadded
      —
      https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456
      Referenceadded
      —
      https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6
      Referenceadded
      —
      https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f
      Referenceremoved
      https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090
      —
      Referenceremoved
      https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346
      —
      Referenceremoved
      https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217
      —
      Referenceremoved
      https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5
      —
      Referenceremoved
      https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456
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      Referenceremoved
      https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6
      —
      Referenceremoved
      https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f Types: Mailing List, Patch
      —

      Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    2. Record modifiedCVE Program

      Show 24 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090
      Referenceadded
      —
      https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346
      Referenceadded
      —
      https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217
      Referenceadded
      —
      https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5
      Referenceadded
      —
      https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456
      Referenceadded
      —
      https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6
      Referenceadded
      —
      https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f
      Referenceadded
      —
      https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
      Referenceremoved
      https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090
      —
      Referenceremoved
      https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346
      —
      Referenceremoved
      https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217
      —
      Referenceremoved
      https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5
      —
      Referenceremoved
      https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456
      —
      Referenceremoved
      https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6
      —
      Referenceremoved
      https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f
      —
      Referenceremoved
      https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/6413e78086caf7bf15639923740da0d91fdfd090 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/7104a00fa37ae898a827381f1161fa3286c8b346 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/85570b91e4820a0db9d9432098778cafafa7d217 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/bdd895e0190c464f54f84579e7535d80276f0fc5 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/c21a8870c98611e8f892511825c9607f1e2cd456 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/e362d007294955a4fb929e1c8978154a64efdcb6 Types: Mailing List, Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/ec77fa12da41260c6bf9e060b89234b980c5130f Types: Mailing List, Patch
      —
      Reference typeremoved
      https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List
      —

      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
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2024/26xxx/CVE-2024-26872.json">CVE-2024-26872</a>
      Referenceadded
      —
      https://cert-portal.siemens.com/productcert/html/ssa-265688.html
      Referenceremoved
      https://cert-portal.siemens.com/productcert/html/ssa-265688.html
      —

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

    4. Record modifiedLinux

      CVSS V3.1: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      CVSSadded
      —
      AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

      Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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