Vulnerabilities > CVE-2016-6156 - Race Condition vulnerability in Linux Kernel

047910
CVSS 5.1 - MEDIUM
Attack vector
LOCAL
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
local
high complexity
linux
CWE-362
nessus
NVD
Published: 2016-08-06
Updated: 2024-11-21

Summary

Race condition in the ec_device_ioctl_xcmd function in drivers/platform/chrome/cros_ec_dev.c in the Linux kernel before 4.7 allows local users to cause a denial of service (out-of-bounds array access) by changing a certain size value, aka a "double fetch" vulnerability.

Vulnerable Configurations

Part Description Count
OS
Linux
2780

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.

Nessus

  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-1533.NASL
    descriptionAccording to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - An integer overflow flaw was found in the way the Linux kernel
    last seen2020-03-19
    modified2019-05-14
    plugin id124986
    published2019-05-14
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124986
    titleEulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1533)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(124986);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/19");

  script_cve_id(
    "CVE-2013-4515",
    "CVE-2013-6378",
    "CVE-2014-0196",
    "CVE-2014-3673",
    "CVE-2014-3690",
    "CVE-2014-9715",
    "CVE-2014-9731",
    "CVE-2015-2672",
    "CVE-2015-6937",
    "CVE-2015-7613",
    "CVE-2015-8844",
    "CVE-2016-0821",
    "CVE-2016-2066",
    "CVE-2016-6156",
    "CVE-2017-1000251",
    "CVE-2017-18200",
    "CVE-2017-2671",
    "CVE-2018-10883",
    "CVE-2018-15594",
    "CVE-2018-5344"
  );
  script_bugtraq_id(
    63518,
    63886,
    67199,
    67282,
    70691,
    70883,
    73953,
    75001
  );

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1533)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the kernel packages installed, the
EulerOS Virtualization for ARM 64 installation on the remote host is
affected by the following vulnerabilities :

  - An integer overflow flaw was found in the way the Linux
    kernel's netfilter connection tracking implementation
    loaded extensions. An attacker on a local network could
    potentially send a sequence of specially crafted
    packets that would initiate the loading of a large
    number of extensions, causing the targeted system in
    that network to crash.(CVE-2014-9715i1/4%0

  - A flaw was found in the Linux kernel which could cause
    a kernel panic when restoring machine specific
    registers on the PowerPC platform. Incorrect
    transactional memory state registers could
    inadvertently change the call path on return from
    userspace and cause the kernel to enter an unknown
    state and crash.(CVE-2015-8844i1/4%0

  - A timing flaw was found in the Chrome EC driver in the
    Linux kernel. An attacker could abuse timing to skip
    validation checks to copy additional data from
    userspace possibly increasing privilege or crashing the
    system.(CVE-2016-6156i1/4%0

  - A race condition flaw was found in the way the Linux
    kernel's IPC subsystem initialized certain fields in an
    IPC object structure that were later used for
    permission checking before inserting the object into a
    globally visible list. A local, unprivileged user could
    potentially use this flaw to elevate their privileges
    on the system.(CVE-2015-7613i1/4%0

  - A path length checking flaw was found in Linux kernels
    built with UDF file system (CONFIG_UDF_FS) support. An
    attacker able to mount a corrupted/malicious UDF file
    system image could use this flaw to leak kernel memory
    to user-space.(CVE-2014-9731i1/4%0

  - A race condition leading to a NULL pointer dereference
    was found in the Linux kernel's Link Layer Control
    implementation. A local attacker with access to ping
    sockets could use this flaw to crash the
    system.(CVE-2017-2671i1/4%0

  - The f2fs implementation in the Linux kernel, before
    4.14, mishandles reference counts associated with
    f2fs_wait_discard_bios calls. This allows local users
    to cause a denial of service (BUG), as demonstrated by
    fstrim.(CVE-2017-18200i1/4%0

  - The LIST_POISON feature in include/linux/poison.h in
    the Linux kernel before 4.3, as used in Android 6.0.1
    before 2016-03-01, does not properly consider the
    relationship to the mmap_min_addr value, which makes it
    easier for attackers to bypass a poison-pointer
    protection mechanism by triggering the use of an
    uninitialized list entry, aka Android internal bug
    26186802, a different vulnerability than
    CVE-2015-3636.(CVE-2016-0821i1/4%0

  - The xsave/xrstor implementation in
    arch/x86/include/asm/xsave.h in the Linux kernel before
    3.19.2 creates certain .altinstr_replacement pointers
    and consequently does not provide any protection
    against instruction faulting, which allows local users
    to cause a denial of service (panic) by triggering a
    fault, as demonstrated by an unaligned memory operand
    or a non-canonical address memory
    operand.(CVE-2015-2672i1/4%0

  - The n_tty_write function in drivers/tty/n_tty.c in the
    Linux kernel through 3.14.3 does not properly manage
    tty driver access in the 'LECHO i1/4+ !OPOST' case, which
    allows local users to cause a denial of service (memory
    corruption and system crash) or gain privileges by
    triggering a race condition involving read and write
    operations with long strings.(CVE-2014-0196i1/4%0

  - In the Linux kernel through 4.14.13,
    drivers/block/loop.c mishandles lo_release
    serialization, which allows attackers to cause a denial
    of service (__lock_acquire use-after-free) or possibly
    have unspecified other impact.(CVE-2018-5344i1/4%0

  - The lbs_debugfs_write function in
    drivers/net/wireless/libertas/debugfs.c in the Linux
    kernel through 3.12.1 allows local users to cause a
    denial of service (OOPS) by leveraging root privileges
    for a zero-length write operation.(CVE-2013-6378i1/4%0

  - A NULL-pointer dereference vulnerability was discovered
    in the Linux kernel. The kernel's Reliable Datagram
    Sockets (RDS) protocol implementation did not verify
    that an underlying transport existed before creating a
    connection to a remote server. A local system user
    could exploit this flaw to crash the system by creating
    sockets at specific times to trigger a NULL pointer
    dereference.(CVE-2015-6937i1/4%0

  - A stack buffer overflow flaw was found in the way the
    Bluetooth subsystem of the Linux kernel processed
    pending L2CAP configuration responses from a client. On
    systems with the stack protection feature enabled in
    the kernel (CONFIG_CC_STACKPROTECTOR=y, which is
    enabled on all architectures other than s390x and
    ppc64le), an unauthenticated attacker able to initiate
    a connection to a system via Bluetooth could use this
    flaw to crash the system. Due to the nature of the
    stack protection feature, code execution cannot be
    fully ruled out, although we believe it is unlikely. On
    systems without the stack protection feature (ppc64le
    the Bluetooth modules are not built on s390x), an
    unauthenticated attacker able to initiate a connection
    to a system via Bluetooth could use this flaw to
    remotely execute arbitrary code on the system with ring
    0 (kernel) privileges.(CVE-2017-1000251i1/4%0

  - Integer signedness error in the MSM QDSP6 audio driver
    for the Linux kernel 3.x, as used in Qualcomm
    Innovation Center (QuIC) Android contributions for MSM
    devices and other products, allows attackers to gain
    privileges or cause a denial of service (memory
    corruption) via a crafted application that makes an
    ioctl call.(CVE-2016-2066i1/4%0

  - The bcm_char_ioctl function in
    drivers/staging/bcm/Bcmchar.c in the Linux kernel
    before 3.12 does not initialize a certain data
    structure, which allows local users to obtain sensitive
    information from kernel memory via an
    IOCTL_BCM_GET_DEVICE_DRIVER_INFO ioctl
    call.(CVE-2013-4515i1/4%0

  - A flaw was found in the way the Linux kernel's Stream
    Control Transmission Protocol (SCTP) implementation
    handled malformed Address Configuration Change Chunks
    (ASCONF). A remote attacker could use either of these
    flaws to crash the system.(CVE-2014-3673i1/4%0

  - It was found that paravirt_patch_call/jump() functions
    in the arch/x86/kernel/paravirt.c in the Linux kernel
    mishandles certain indirect calls, which makes it
    easier for attackers to conduct Spectre-v2 attacks
    against paravirtualized guests.(CVE-2018-15594i1/4%0

  - It was found that the Linux kernel's KVM implementation
    did not ensure that the host CR4 control register value
    remained unchanged across VM entries on the same
    virtual CPU. A local, unprivileged user could use this
    flaw to cause a denial of service on the
    system.(CVE-2014-3690i1/4%0

  - A flaw was found in the Linux kernel's ext4 filesystem.
    A local user can cause an out-of-bound write in
    jbd2_journal_dirty_metadata(), a denial of service, and
    a system crash by mounting and operating on a crafted
    ext4 filesystem image.(CVE-2018-10883i1/4%0

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1533
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b6ad58ff");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-perf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.1.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["kernel-4.19.28-1.2.117",
        "kernel-devel-4.19.28-1.2.117",
        "kernel-headers-4.19.28-1.2.117",
        "kernel-tools-4.19.28-1.2.117",
        "kernel-tools-libs-4.19.28-1.2.117",
        "kernel-tools-libs-devel-4.19.28-1.2.117",
        "perf-4.19.28-1.2.117",
        "python-perf-4.19.28-1.2.117"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3084-4.NASL
    descriptionPengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. (CVE-2016-6136) It was discovered that the powerpc and powerpc64 hypervisor-mode KVM implementation in the Linux kernel for did not properly maintain state about transactional memory. An unprivileged attacker in a guest could cause a denial of service (CPU lockup) in the host OS. (CVE-2016-5412) Pengfei Wang discovered a race condition in the Chrome OS embedded controller device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6156). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id93607
    published2016-09-20
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93607
    titleUbuntu 16.04 LTS : linux-snapdragon vulnerabilities (USN-3084-4)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3084-3.NASL
    descriptionPengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. (CVE-2016-6136) It was discovered that the powerpc and powerpc64 hypervisor-mode KVM implementation in the Linux kernel for did not properly maintain state about transactional memory. An unprivileged attacker in a guest could cause a denial of service (CPU lockup) in the host OS. (CVE-2016-5412) Pengfei Wang discovered a race condition in the Chrome OS embedded controller device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6156). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id93606
    published2016-09-20
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93606
    titleUbuntu 16.04 LTS : linux-raspi2 vulnerabilities (USN-3084-3)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-784D5526D8.NASL
    descriptionUpdate to latest upstream stable release, Linux v4.6.4 For those with Skylake CPUs, please note that there may be instability with a recent microcode update. Read https://www.happyassassin.net/2016/07/07/psa-failure-to-boot-after-ker nel-update-on-skylake-systems/ and look for a system firmware update before installing the kernel. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-07-20
    plugin id92444
    published2016-07-20
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/92444
    titleFedora 23 : kernel (2016-784d5526d8)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-9A16B2E14E.NASL
    descriptionUpdate to latest upstream stable release, Linux v4.6.4 For those with Skylake CPUs, please note that there may be instability with a recent microcode update. Read https://www.happyassassin.net/2016/07/07/psa-failure-to-boot-after-ker nel-update-on-skylake-systems/ and look for a system firmware update before installing the kernel. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-07-20
    plugin id92446
    published2016-07-20
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/92446
    titleFedora 24 : kernel (2016-9a16b2e14e)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3084-1.NASL
    descriptionPengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. (CVE-2016-6136) It was discovered that the powerpc and powerpc64 hypervisor-mode KVM implementation in the Linux kernel for did not properly maintain state about transactional memory. An unprivileged attacker in a guest could cause a denial of service (CPU lockup) in the host OS. (CVE-2016-5412) Pengfei Wang discovered a race condition in the Chrome OS embedded controller device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6156). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id93604
    published2016-09-20
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93604
    titleUbuntu 16.04 LTS : linux vulnerabilities (USN-3084-1)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3084-2.NASL
    descriptionUSN-3084-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Pengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. (CVE-2016-6136) It was discovered that the powerpc and powerpc64 hypervisor-mode KVM implementation in the Linux kernel for did not properly maintain state about transactional memory. An unprivileged attacker in a guest could cause a denial of service (CPU lockup) in the host OS. (CVE-2016-5412) Pengfei Wang discovered a race condition in the Chrome OS embedded controller device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6156). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id93605
    published2016-09-20
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93605
    titleUbuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3084-2)

References