A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system) functionality was found in the way user create and delete object using NFSv4.2 or newer if both simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to the NFS could use this flaw to starve the resources causing denial of service.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001537 advisory.

    A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system)     functionality was found in the way user create and delete object using NFSv4.2 or newer if both     simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to     the NFS could use this flaw to starve the resources causing denial of service.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004487 advisory.

    A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system)     functionality was found in the way user create and delete object using NFSv4.2 or newer if both     simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to     the NFS could use this flaw to starve the resources causing denial of service.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004057 advisory.

    A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system)     functionality was found in the way user create and delete object using NFSv4.2 or newer if both     simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to     the NFS could use this flaw to starve the resources causing denial of service.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system)     functionality was found in the way user create and delete object using NFSv4.2 or newer if both     simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to     the NFS could use this flaw to starve the resources causing denial of service. (CVE-2020-35513)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0336 advisory.

  - Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain     privileges or cause a denial of service by leveraging improper access to a certain error field.
    (CVE-2020-15436)

  - A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system)     functionality was found in the way user create and delete object using NFSv4.2 or newer if both     simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to     the NFS could use this flaw to starve the resources causing denial of service. (CVE-2020-35513)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 5.19.1.5. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.19.1.5 advisory.

  - Perl before 5.30.3 has an integer overflow related to mishandling of a PL_regkind[OP(n)] == NOTHING     situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction     injection. (CVE-2020-10878)

  - Net-SNMP through 5.8 has Improper Privilege Management because SNMP WRITE access to the EXTEND MIB     provides the ability to run arbitrary commands as root. (CVE-2020-15862)

  - Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain     privileges or cause a denial of service by leveraging improper access to a certain error field.
    (CVE-2020-15436)

  - A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system)     functionality was found in the way user create and delete object using NFSv4.2 or newer if both     simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to     the NFS could use this flaw to starve the resources causing denial of service. (CVE-2020-35513)

  - Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular     expression quantifiers have an integer overflow. (CVE-2020-10543)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 6.0. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-6.0 advisory.

  - encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write     access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character     sequence. (CVE-2021-26937)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5715)

  - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized     disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5753)

  - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow     unauthorized disclosure of information to an attacker with local user access via a side-channel analysis     of the data cache. (CVE-2017-5754)

  - Vulnerability in the Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition product of Oracle Java     SE (component: Libraries). Supported versions that are affected are Java SE: 7u291, 8u281, 11.0.10, 16;
    Java SE Embedded: 8u281; Oracle GraalVM Enterprise Edition: 19.3.5, 20.3.1.2 and 21.0.0.2. Difficult to     exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition. Successful attacks require human     interaction from a person other than the attacker. Successful attacks of this vulnerability can result in     unauthorized creation, deletion or modification access to critical data or all Java SE, Java SE Embedded,     Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments     that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox     for security. (CVE-2021-2163)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 5.19.2. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.19.2 advisory.

  - Perl before 5.30.3 has an integer overflow related to mishandling of a PL_regkind[OP(n)] == NOTHING     situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction     injection. (CVE-2020-10878)

  - A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption     and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause     the system to crash or cause a denial of service. The highest threat from this vulnerability is to data     confidentiality and integrity as well as system availability. (CVE-2020-25643)

  - Net-SNMP through 5.8 has Improper Privilege Management because SNMP WRITE access to the EXTEND MIB     provides the ability to run arbitrary commands as root. (CVE-2020-15862)

  - The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking     vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on     a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value     remains the same starting from boot time, and can be inferred by an attacker. This affects     net/core/flow_dissector.c and related code. (CVE-2019-18282)

  - A buffer over-read flaw was found in RH kernel versions before 5.0 in crypto_authenc_extractkeys in     crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4     bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat,     leading to a system crash. This flaw allows a local attacker with user privileges to cause a denial of     service. (CVE-2020-10769)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 5.15.6. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.15.6 advisory.

  - encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write     access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character     sequence. (CVE-2021-26937)

  - Vulnerability in the Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition product of Oracle Java     SE (component: Libraries). Supported versions that are affected are Java SE: 7u291, 8u281, 11.0.10, 16;
    Java SE Embedded: 8u281; Oracle GraalVM Enterprise Edition: 19.3.5, 20.3.1.2 and 21.0.0.2. Difficult to     exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to     compromise Java SE, Java SE Embedded, Oracle GraalVM Enterprise Edition. Successful attacks require human     interaction from a person other than the attacker. Successful attacks of this vulnerability can result in     unauthorized creation, deletion or modification access to critical data or all Java SE, Java SE Embedded,     Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments     that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox     for security. (CVE-2021-2163)

  - In the Linux kernel before 5.3.9, there are multiple out-of-bounds write bugs that can be caused by a     malicious USB device in the Linux kernel HID drivers, aka CID-d9d4b1e46d95. This affects drivers/hid/hid-     axff.c, drivers/hid/hid-dr.c, drivers/hid/hid-emsff.c, drivers/hid/hid-gaff.c, drivers/hid/hid-holtekff.c,     drivers/hid/hid-lg2ff.c, drivers/hid/hid-lg3ff.c, drivers/hid/hid-lg4ff.c, drivers/hid/hid-lgff.c,     drivers/hid/hid-logitech-hidpp.c, drivers/hid/hid-microsoft.c, drivers/hid/hid-sony.c, drivers/hid/hid-     tmff.c, and drivers/hid/hid-zpff.c. (CVE-2019-19532)

  - In create_pinctrl of core.c, there is a possible out of bounds read due to a use after free. This could     lead to local information disclosure with no additional execution privileges needed. User interaction is     not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-140550171     (CVE-2020-0427)

  - A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem     allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate     privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as     system availability. (CVE-2020-14351)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0338 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: use-after-free in fs/block_dev.c (CVE-2020-15436)

    * kernel: Nfsd failure to clear umask after processing an open or create (CVE-2020-35513)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * kernel-rt: update to the latest RHEL7.9.z3 source tree (BZ#1906133)

    * [kernel-rt] WARNING: CPU: 8 PID: 586 at kernel/sched/core.c:3644 migrate_enable+0x15f/0x210 (BZ#1916123)

    * [kernel-rt-debug] [ BUG: bad unlock balance detected! ] [RHEL-7.9.z] (BZ#1916130)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0336 advisory.

    - [fs] block: Fix use-after-free in blkdev_get() (Ming Lei) [1902414] {CVE-2020-15436}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0336 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: use-after-free in fs/block_dev.c (CVE-2020-15436)

    * kernel: Nfsd failure to clear umask after processing an open or create (CVE-2020-35513)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * double free issue in filelayout_alloc_commit_info (BZ#1679980)

    * Regression: Plantronics Device SHS2355-11 PTT button does not work after update to 7.7 (BZ#1769502)

    * Openstack network node reports unregister_netdevice: waiting for qr-3cec0c92-9a to become free. Usage     count = 1 (BZ#1809519)

    * dlm: add ability to interrupt waiting for acquire POSIX lock (BZ#1826858)

    * [Azure][RHEL7] soft lockups and performance loss occurring during final fsync with parallel dd writes to     xfs filesystem in azure instance (BZ#1859364)

    * Guest crashed when hotplug vcpus on booting kernel stage (BZ#1866138)

    * soft lockup occurs while a thread group leader is waiting on tasklist_waiters in mm_update_next_owner()     where a huge number of the thread group members are exiting and trying to take the tasklist_lock.
    (BZ#1872110)

    * [DELL EMC 7.6 BUG] Kioxia CM6 NVMe drive fails to enumerate (BZ#1883403)

    * [Hyper-V][RHEL7] Request to included a commit that adds a timeout to vmbus_wait_for_unload (BZ#1888979)

    * Unable to discover the LUNs from new storage port (BZ#1889311)

    * RHEL 7.9 Kernel panic at ceph_put_snap_realm+0x21 (BZ#1890386)

    * A hard lockup occurrs where one task is looping in an sk_lock spinlock that has been taken by another     task running timespec64_add_ns(). (BZ#1890911)

    * ethtool/mlx5_core provides incorrect SFP module info (BZ#1896756)

    * RHEL7.7 - zcrypt: Fix ZCRYPT_PERDEV_REQCNT ioctl (BZ#1896826)

    * RHEL7.7 - s390/dasd: Fix zero write for FBA devices (BZ#1896839)

    * [Azure]IP forwarding issue in netvsc[7.9.z] (BZ#1898280)

    * Security patch for CVE-2020-25212 breaks directory listings via 'ls' on NFS V4.2 shares mounted with     selinux enabled labels (BZ#1917504)

    Enhancement(s):

    * RFE : handle better ERRbaduid on SMB1 (BZ#1847041)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2021:0336-1 advisory.

  - kernel: use-after-free in fs/block_dev.c (CVE-2020-15436)

  - kernel: Nfsd failure to clear umask after processing an open or create (CVE-2020-35513)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
290832	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001537)	Nessus	Unity Linux Local Security Checks	medium
290150	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004487)	Nessus	Unity Linux Local Security Checks	medium
288309	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004057)	Nessus	Unity Linux Local Security Checks	medium
239342	TencentOS Server 4: kernel (TSSA-2024:0981)	Nessus	Tencent Local Security Checks	high
223524	Linux Distros Unpatched Vulnerability : CVE-2020-35513	Nessus	Misc.	medium
208638	CentOS 7 : kernel (RHSA-2021:0336)	Nessus	CentOS Local Security Checks	medium
164609	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.19.1.5)	Nessus	Misc.	high
164597	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-6.0)	Nessus	Misc.	medium
164578	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.19.2)	Nessus	Misc.	high
164567	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.15.6)	Nessus	Misc.	critical
146082	RHEL 7 : kernel-rt (RHSA-2021:0338)	Nessus	Red Hat Local Security Checks	medium
146078	Oracle Linux 7 : kernel (ELSA-2021-0336)	Nessus	Oracle Linux Local Security Checks	medium
146076	RHEL 7 : kernel (RHSA-2021:0336)	Nessus	Red Hat Local Security Checks	medium
146064	Scientific Linux Security Update : kernel on SL7.x x86_64 (2021:0336)	Nessus	Scientific Linux Local Security Checks	medium

Detections

Analytics

CVE-2020-35513

medium

Tenable Plugins

medium

medium

medium

high

medium

medium

high

medium

high

critical

medium

medium

medium

medium