LowCVE-2019-11884

    Linux Kernel: security vulnerability (CVE-2019-11884)

    Published Sources: CVE.org

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    What is affected, what to do

    The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel before 5.0.15 allows a local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command, because a name field may not end with a '\0' character.

    Update Linux Kernel to version 5.0.15.

    Affected
    • Linux Kernel lt *..5.0.15
    • Fedora eq 28..28
    • Fedora eq 29..29
    • Fedora eq 30..30
    • Debian Linux eq 8.0..8.0
    • Debian Linux eq 9.0..9.0
    • Canonical Ubuntu Linux eq 16.04..16.04
    • Canonical Ubuntu Linux eq 18.04..18.04
    • Canonical Ubuntu Linux eq 19.04..19.04
    • Redhat Enterprise Linux eq 8.0..8.0
    • Red Hat Enterprise Linux Extended Update Support (EUS) eq 8.1..8.1
    • Red Hat Enterprise Linux Extended Update Support (EUS) eq 8.2..8.2
    • Red Hat Enterprise Linux Extended Update Support (EUS) eq 8.4..8.4
    • Red Hat Enterprise Linux Extended Update Support (EUS) eq 8.6..8.6
    • Red Hat Enterprise Linux For Real Time eq 8.0..8.0
    • Red Hat Enterprise Linux For Real Time For Nfv Tus eq 8.2..8.2
    • Red Hat Enterprise Linux For Real Time For Nfv Tus eq 8.4..8.4
    • Red Hat Enterprise Linux For Real Time For Nfv Tus eq 8.6..8.6
    • Red Hat Enterprise Linux For Real Time Tus eq 8.2..8.2
    • Red Hat Enterprise Linux For Real Time Tus eq 8.4..8.4
    • Red Hat Enterprise Linux For Real Time Tus eq 8.6..8.6
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 8.2..8.2
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 8.4..8.4
    • Redhat Enterprise Linux Server Advanced mission critical Update Support (AUS) eq 8.6..8.6
    • Red Hat Enterprise Linux Server (TUS) eq 8.2..8.2
    • Red Hat Enterprise Linux Server (TUS) eq 8.4..8.4
    • Red Hat Enterprise Linux Server (TUS) eq 8.6..8.6
    • openSUSE Leap eq 15.0..15.0
    • openSUSE Leap eq 15.1..15.1
    • openSUSE Leap eq 42.3..42.3
    Fixed in
    • Linux Kernel 5.0.15

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

    Metrics

    3.3

    Priority

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

    Source: NVD, CVSS v3

    3.3

    CVSS v3

    Severity Low on the scale from 0 to 10.

    Source: CVE.org

    0.5 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 42.6

    Show all metrics
    Severity
    Low
    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
    30.98 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
    3.3 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
    3.3
    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
    0.5 %
    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
    42.6
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    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

    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
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    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

    The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel before 5.0.15 allows a local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command, because a name field may not end with a '\0' character.

    Source: cvelistv5, NVD (NIST)

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxdebiandebian_linux8.0
    Linuxdebiandebian_linux9.0
    Linuxredhatenterprise_linux8.0
    Linuxredhatenterprise_linux_eus8.1
    Linuxredhatenterprise_linux_eus8.2
    Linuxredhatenterprise_linux_eus8.4
    Linuxredhatenterprise_linux_eus8.6
    Linuxredhatenterprise_linux_for_real_time8.0
    Linuxredhatenterprise_linux_for_real_time_for_nfv_tus8.2
    Linuxredhatenterprise_linux_for_real_time_for_nfv_tus8.4
    Linuxredhatenterprise_linux_for_real_time_for_nfv_tus8.6
    Linuxredhatenterprise_linux_for_real_time_tus8.2
    Linuxredhatenterprise_linux_for_real_time_tus8.4
    Linuxredhatenterprise_linux_for_real_time_tus8.6
    Linuxredhatenterprise_linux_server_aus8.2
    Linuxredhatenterprise_linux_server_aus8.4
    Linuxredhatenterprise_linux_server_aus8.6
    Linuxredhatenterprise_linux_server_tus8.2
    Linuxredhatenterprise_linux_server_tus8.4
    Linuxredhatenterprise_linux_server_tus8.6
    Linuxopensuseleap15.0
    Linuxopensuseleap15.1
    Linuxopensuseleap42.3
    Linuxlinuxlinux_kernel—

    References & sources

    • cdn.kernel.orgpub/linux/kernel/v5.x/ChangeLog-5.0.15x_refsource_MISC, Release notes, Vendor advisory
    • github.comtorvalds/linux/commit/a1616a5ac99ede5d605047a9012481ce7ff18b16x_refsource_MISC, Patch, Vendor advisory
    • git.kernel.orgcgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1616a5ac99…x_refsource_MISC, Patch, Vendor advisory
    • securityfocus.com108299Vulnerability database, x_refsource_BID, Broken link, Third-party advisory, Vulnerability database
    • lists.fedoraproject.orgFEDORA-2019-640f8d8dd1Vendor advisory, x_refsource_FEDORA
    • lists.fedoraproject.orgFEDORA-2019-e6bf55e821Vendor advisory, x_refsource_FEDORA
    • lists.opensuse.orgopenSUSE-SU-2019:1404Vendor advisory, x_refsource_SUSE, Mailing list, Third-party advisory
    • lists.fedoraproject.orgFEDORA-2019-c36afa818cVendor advisory, x_refsource_FEDORA
    • lists.opensuse.orgopenSUSE-SU-2019:1407Vendor advisory, x_refsource_SUSE, Mailing list, Third-party advisory
    • lists.opensuse.orgopenSUSE-SU-2019:1479Vendor advisory, x_refsource_SUSE, Mailing list, Third-party advisory
    • debian.orgDSA-4465Vendor advisory, x_refsource_DEBIAN, Third-party advisory
    • lists.debian.org[debian-lts-announce] 20190617 [SECURITY] [DLA 1823-1] linux security updateMailing list, x_refsource_MLIST, Mailing list, Third-party advisory
    • lists.debian.org[debian-lts-announce] 20190618 [SECURITY] [DLA 1824-1] linux-4.9 security updateMailing list, x_refsource_MLIST, Mailing list, Third-party advisory
    • seclists.org20190618 [SECURITY] [DSA 4465-1] linux security updateMailing list, x_refsource_BUGTRAQ, Mailing list, Third-party advisory
    • usn.ubuntu.comUSN-4068-1Vendor advisory, x_refsource_UBUNTU, Third-party advisory
    • usn.ubuntu.comUSN-4068-2Vendor advisory, x_refsource_UBUNTU, Third-party advisory
    • usn.ubuntu.comUSN-4069-1Vendor advisory, x_refsource_UBUNTU, Third-party advisory
    • usn.ubuntu.comUSN-4076-1Vendor advisory, x_refsource_UBUNTU, Third-party advisory
    • usn.ubuntu.comUSN-4069-2Vendor advisory, x_refsource_UBUNTU, Third-party advisory
    • usn.ubuntu.comUSN-4118-1Vendor advisory, x_refsource_UBUNTU, Third-party advisory
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