It was discovered that the keyring implementation in the Linux kernel in some situations did not prevent special internal keyrings from being joined by userspace keyrings. A privileged local attacker could use this to bypass module verification. (CVE-2016-9604)

Daniel Jiang discovered that a race condition existed in the ipv4 ping socket implementation in the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash).
(CVE-2017-2671)

JongHwan Kim discovered an out-of-bounds read in the TCP stack of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or leak sensitive information. (CVE-2017-7277)

Eric Biggers discovered a memory leak in the keyring implementation in the Linux kernel. A local attacker could use this to cause a denial of service (memory consumption). (CVE-2017-7472)

Sabrina Dubroca discovered that the asynchronous cryptographic hash (ahash) implementation in the Linux kernel did not properly handle a full request queue. A local attacker could use this to cause a denial of service (infinite recursion). (CVE-2017-7618)

Tuomas Haanpaa and Ari Kauppi discovered that the NFSv2 and NFSv3 server implementations in the Linux kernel did not properly handle certain long RPC replies. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-7645)

Tommi Rantala and Brad Spengler discovered that the memory manager in the Linux kernel did not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism. A local attacker with access to /dev/mem could use this to expose sensitive information or possibly execute arbitrary code. (CVE-2017-7889)

Tuomas Haanpaa and Ari Kauppi discovered that the NFSv2 and NFSv3 server implementations in the Linux kernel did not properly check for the end of buffer. A remote attacker could use this to craft requests that cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7895)

Fabian Grunbichler discovered that the Packet action API implementation in the Linux kernel improperly handled uninitialized data. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7979)

It was discovered that the Conexant USB driver in the Linux kernel improperly handled memory in some configurations. A local attacker could use this to cause a denial of service (system crash).
(CVE-2017-8063)

It was discovered that the DVD USB framework in the Linux kernel improperly handled memory in some configurations. A local attacker could use this to cause a denial of service (system crash).
(CVE-2017-8064)

It was discovered that the virtio console driver in the Linux kernel improperly handled memory. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-8067).

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.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001508 advisory.

    drivers/media/usb/dvb-usb-v2/dvb_usb_core.c in the Linux kernel 4.9.x and 4.10.x before 4.10.12 interacts     incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service     (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more     than one virtual page for a DMA scatterlist.

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.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

  - CVE-2017-7487     Li Qiang reported a reference counter leak in the     ipxitf_ioctl function which may result into a     use-after-free vulnerability, triggerable when a IPX     interface is configured.

  - CVE-2017-7645     Tuomas Haanpaa and Matti Kamunen from Synopsys Ltd     discovered that the NFSv2 and NFSv3 server     implementations are vulnerable to an out-of-bounds     memory access issue while processing arbitrarily long     arguments sent by NFSv2/NFSv3 PRC clients, leading to a     denial of service.

  - CVE-2017-7895     Ari Kauppi from Synopsys Ltd discovered that the NFSv2     and NFSv3 server implementations do not properly handle     payload bounds checking of WRITE requests. A remote     attacker with write access to a NFS mount can take     advantage of this flaw to read chunks of arbitrary     memory from both kernel-space and user-space.

  - CVE-2017-8064     Arnd Bergmann found that the DVB-USB core misused the     device logging system, resulting in a use-after-free     vulnerability, with unknown security impact.

  - CVE-2017-8890     It was discovered that the net_csk_clone_lock() function     allows a remote attacker to cause a double free leading     to a denial of service or potentially have other impact.

  - CVE-2017-8924     Johan Hovold found that the io_ti USB serial driver     could leak sensitive information if a malicious USB     device was connected.

  - CVE-2017-8925     Johan Hovold found a reference counter leak in the     omninet USB serial driver, resulting in a use-after-free     vulnerability. This can be triggered by a local user     permitted to open tty devices.

  - CVE-2017-9074     Andrey Konovalov reported that the IPv6 fragmentation     implementation could read beyond the end of a packet     buffer. A local user or guest VM might be able to use     this to leak sensitive information or to cause a denial     of service (crash).

  - CVE-2017-9075     Andrey Konovalov reported that the SCTP/IPv6     implementation wrongly initialised address lists on     connected sockets, resulting in a use-after-free     vulnerability, a similar issue to CVE-2017-8890. This     can be triggered by any local user.

  - CVE-2017-9076 / CVE-2017-9077     Cong Wang found that the TCP/IPv6 and DCCP/IPv6     implementations wrongly initialised address lists on     connected sockets, a similar issue to CVE-2017-9075.

  - CVE-2017-9242     Andrey Konovalov reported a packet buffer overrun in the     IPv6 implementation. A local user could use this for     denial of service (memory corruption; crash) and     possibly for privilege escalation.

  - CVE-2017-1000364     The Qualys Research Labs discovered that the size of the     stack guard page is not sufficiently large. The     stack-pointer can jump over the guard-page and moving     from the stack into another memory region without     accessing the guard-page. In this case no page-fault     exception is raised and the stack extends into the other     memory region. An attacker can exploit this flaw for     privilege escalation.

  The default stack gap protection is set to 256 pages and can be   configured via the stack_guard_gap kernel parameter on the kernel   command line.

  Further details can be found at   https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003281 advisory.

    drivers/media/usb/dvb-usb-v2/dvb_usb_core.c in the Linux kernel 4.9.x and 4.10.x before 4.10.12 interacts     incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service     (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more     than one virtual page for a DMA scatterlist.

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-2026-002673 advisory.

    drivers/media/usb/dvb-usb-v2/dvb_usb_core.c in the Linux kernel 4.9.x and 4.10.x before 4.10.12 interacts     incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service     (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more     than one virtual page for a DMA scatterlist.

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.

ID	Name	Product	Family	Published	Updated	Severity
100668	Ubuntu 17.04 : linux, linux-raspi2 vulnerabilities (USN-3314-1)	Nessus	Ubuntu Local Security Checks	6/7/2017	12/16/2025	critical
290684	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001508)	Nessus	Unity Linux Local Security Checks	1/16/2026	1/16/2026	high
100877	Debian DSA-3886-1 : linux - security update (Stack Clash)	Nessus	Debian Local Security Checks	6/20/2017	12/16/2025	critical
286862	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003281)	Nessus	Unity Linux Local Security Checks	1/15/2026	1/16/2026	high
287323	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002673)	Nessus	Unity Linux Local Security Checks	1/15/2026	1/16/2026	high

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