HighCVE-2026-53329

    Linux Kernel: security vulnerability (CVE-2026-53329)

    Published Last modified Sources: SUSE, Debian LTS, Ubuntu, Red Hat, BSI, CVE.org, Msrc Update Guide

    What is affected, what to do

    A flaw was found in the Linux kernel's `drm/amd/display` component. The `dal_vector_reserve()` function calculates memory allocation size using 32-bit arithmetic, which can lead to an integer overflow.

    Update Linux Kernel to version 5.10.260, Linux Kernel to version 5.15.210, Linux Kernel to version 6.1.176.

    Affected
    • Linux Kernel lt 4.15..5.10.260
    • Linux Kernel lt 5.11..5.15.210
    • Linux Kernel lt 5.16..6.1.176
    • Linux Kernel lt 6.2..6.6.143
    • Linux Kernel lt 6.7..6.12.94
    • Linux Kernel lt 6.13..6.18.36
    • Linux Kernel lt 6.19..7.0.13
    Fixed in
    • Linux Kernel 5.10.260
    • Linux Kernel 5.15.210
    • Linux Kernel 6.1.176
    • Linux Kernel 6.6.143
    • Linux Kernel 6.12.94
    • Linux Kernel 6.18.36
    • Linux Kernel 7.0.13
    • Linux Kernel 7.1

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

    Metrics

    7.1

    Priority

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

    Source: NVD, CVSS v3

    7.0

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: SUSE, Debian LTS, Ubuntu, Red Hat, BSI, CVE.org, Msrc Update Guide

    0.2 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 3.9

    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
    54.78 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
    7.1 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
    7.0
    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
    3.9
    Low — this CVE sits in the lower 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: total
    Source: CISA Vulnrichment, as of 16 October 2026
    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-190

    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 flaw was found in the Linux kernel's `drm/amd/display` component. The `dal_vector_reserve()` function calculates memory allocation size using 32-bit arithmetic, which can lead to an integer overflow. This overflow causes a smaller memory buffer to be allocated than intended, resulting in a heap overflow when data is subsequently appended to the vector. An attacker could potentially use this to cause a denial of service or execute arbitrary code.

    Source: suse_csaf, Debian LTS Advisories, Ubuntu Security Notices, redhat_csaf, BSI WID Portal, BSI CSAF, NVD (NIST), cvelistv5, Microsoft Security Update Guide

    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
    • 6.7 – < 6.12.94
    • 6.13 – < 6.18.36
    • 5.11 – < 5.15.210
    • —
    • 4.15 – < 5.10.260
    • 5.16 – < 6.1.176
    • 6.19 – < 7.0.13
    • 6.2 – < 6.6.143
    • 6.12.94
    • 6.18.36
    • 5.15.210
    • 7.1
    • 5.10.260
    • 6.1.176
    • 7.0.13
    • 6.6.143
    IBMQRadar SIEM
    • < 7.6.0.3
    • <7.5.0 UP16 IF01
    • 7.6.0.3
    • —

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxdebianlinuxbookworm
    Linuxdebianlinuxbullseye
    Linuxdebianlinux-6.1bullseye
    Linuxlinuxlinux_kernel7.1
    Linuxlinuxlinux_kernel—

    Weakness classes (CWE)

    • CWE-190Integer Overflow or Wraparound

      Base

      The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

      Entry at MITRE CWE-190

    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 modifiedCISA ADP

      Weakness type: CWE-190

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Weakness type (CWE)added
      —
      CWE-190

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    2. Record modifiedLinux

      Show 24 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b
      Referenceadded
      —
      https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211
      Referenceadded
      —
      https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9
      Referenceadded
      —
      https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34
      Referenceadded
      —
      https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13
      Referenceadded
      —
      https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009
      Referenceadded
      —
      https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870
      Referenceadded
      —
      https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d
      Referenceremoved
      https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b
      —
      Referenceremoved
      https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211
      —
      Referenceremoved
      https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9
      —
      Referenceremoved
      https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34
      —
      Referenceremoved
      https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13
      —
      Referenceremoved
      https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009
      —
      Referenceremoved
      https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870
      —
      Referenceremoved
      https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211 Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9 Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34 Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13 Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009 Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870 Types: Patch
      —
      Reference typeremoved
      https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d Types: Patch
      —

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

    3. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: no

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-53329","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-10-16T15:28:28.487148Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    4. Initial analysis by NVDNVD

      Newly listed as affected:
      • Linux Kernel (5.16 – before 6.1.176; 6.2 – before 6.6.143; 5.11 – before 5.15.210; 6.13 – before 6.18.36; 6.7 – before 6.12.94; 6.19 – before 7.0.13; 4.15 – before 5.10.260; 6 individual versions)

      Weakness type: CWE-674

      Show 10 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Weakness type (CWE)added
      —
      CWE-674
      Product configurationadded
      —
      OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.176 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.143 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.210 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.94 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.13 *cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 5.10.260
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211 Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9 Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34 Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13 Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009 Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870 Types: Patch
      Reference typeadded
      —
      kernel.org: https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d Types: Patch

      Source identifier: nvd@nist.gov

    5. Record modifiedLinux

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9
      Affected versions (publisher)changed
      Linux, Linux
      Linux, Linux

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

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