Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by leveraging root privileges for a write operation.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000871 advisory.

    Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel     before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by     leveraging root privileges for a write operation.

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-2026-002375 advisory.

    Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel     before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by     leveraging root privileges for a write operation.

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-2026-001877 advisory.

    Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel     before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by     leveraging root privileges for a write operation.

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.

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 :

  - The kernel package contains the Linux kernel (vmlinuz),     the core of any Linux operating system. The kernel     handles the basic functions of the operating system:
    memory allocation, process allocation, device input and     output, etc.Security Fix(es):The uas driver in the     Linux kernel before 4.13.6 allows local users to cause     a denial of service (out-of-bounds read and system     crash), or possibly have unspecified other impacts via     a crafted USB device, related to     drivers/usb/storage/uas-detect.h and     drivers/usb/storage/uas.c.(CVE-2017-16530)The     implementation of big key management in     security/keys/big_key.c in the Linux kernel before     4.8.7 mishandles unsuccessful crypto registration in     conjunction with successful key-type registration,     which allows local users to cause a denial of service     (NULL pointer dereference and panic) or possibly have     unspecified other impact via a crafted application that     uses the big_key data type.(CVE-2016-9313)The Linux     kernel allows remote attackers to execute arbitrary     code via UDP traffic that triggers an unsafe second     checksum calculation during execution of a recv system     call with the MSG_PEEK flag. This may create a kernel     panic or memory corruption leading to privilege     escalation.(CVE-2016-10229)Buffer overflow in the     exitcode_proc_write function in     arch/um/kernel/exitcode.c in the Linux kernel before     3.12 allows local users to cause a denial of service or     possibly have unspecified other impact by leveraging     root privileges for a write operation.(CVE-2013-4512)It     was found that unsharing a mount namespace could allow     a user to see data beneath their restricted     namespace.(CVE-2014-9717)A divide-by-zero flaw was     discovered in the Linux kernel built with KVM     virtualization support(CONFIG_KVM). The flaw occurs in     the KVM module's Programmable Interval Timer(PIT)     emulation, when PIT counters for channel 1 or 2 are set     to zero(0) and a privileged user inside the guest     attempts to read these counters. A privileged guest     user with access to PIT I/O ports could exploit this     issue to crash the host kernel (denial of     service).(CVE-2015-7513)The ims_pcu_parse_cdc_data     function in drivers/input/misc/ims-pcu.c in the Linux     kernel before 4.5.1 allows physically proximate     attackers to cause a denial of service (system crash)     via a USB device without both a master and a slave     interface.(CVE-2016-3689)Stack-based buffer overflow in     the brcmf_cfg80211_start_ap() function in     'driverset/wireless/broadcom/brcm80211/brcmfmac/cfg8021     1.c' in the Linux kernel before 4.7.5 allows local     users to cause a denial of service (system crash) or     possibly have unspecified other impact via a long SSID     Information Element in a command to a Netlink     socket.(CVE-2016-8658)drivers/hid/hid-sony.c in the     Human Interface Device (HID) subsystem in the Linux     kernel through 3.11, when CONFIG_HID_SONY is enabled,     allows physically proximate attackers to cause a denial     of service (heap-based out-of-bounds write) via a     crafted device.(CVE-2013-2890)An issue where a provided     address with access_ok() is not checked was discovered     in i915_gem_execbuffer2_ioctl in     drivers/gpu/drm/i915/i915_gem_execbuffer.c in the Linux     kernel through 4.19.13. A local attacker can craft a     malicious IOCTL function call to overwrite arbitrary     kernel memory, resulting in a Denial of Service or     privilege escalation.(CVE-2018-20669)It was found that     the permission checks performed by the Linux kernel     when a netlink message was received were not     sufficient. A local, unprivileged user could     potentially bypass these restrictions by passing a     netlink socket as stdout or stderr to a more privileged     process and altering the output of this     process.(CVE-2014-0181)An issue was discovered in the     XFS filesystem in fs/xfs/libxfs/xfs_attr_leaf.c in the     Linux kernel. A NULL pointer dereference may occur for     a corrupted xfs image after xfs_da_shrink_inode() is     called with a NULL bp. This can lead to a system crash     and a denial of service.(CVE-2018-13094)The     irda_setsockopt function in net/irda/af_irda.c in the     Linux kernel, through 4.16, allows local users to cause     a denial of service (due to a use-after-free of the     ias_object and a system crash) or possibly have     unspecified other impact by leveraging an AF_IRDA     socket.(CVE-2018-6555)The x86/fpu (Floating Point Unit)     subsystem in the Linux kernel, when a processor     supports the xsave feature but not the xsaves feature,     does not correctly handle attempts to set reserved bits     in the xstate header via the ptrace() or rt_sigreturn()     system call. This allows local users to read the FPU     registers of other processes on the system, related to     arch/x86/kernel/fpu/regset.c and     arch/x86/kernel/fpu/signal.c.(CVE-2017-15537)The     fst_get_iface function in driverset/wan/farsync.c in     the Linux kernel before 3.11.7 does not properly     initialize a certain data structure, which allows local     users to obtain sensitive information from kernel     memory by leveraging the CAP_NET_ADMIN capability for     an SIOCWANDEV ioctl call.(CVE-2014-1444)In the Linux     kernel, through 4.15.4, the floppy driver reveals the     addresses of kernel functions and global variables     using printk calls within the function show_floppy in     drivers/block/floppy.c. An attacker can read this     information from dmesg and use the addresses to find     the locations of kernel code and data and bypass kernel     security protections such as KASLR.(CVE-2018-7273)A     flaw in 'arch/arm64/kernel/sys.c' in the Linux kernel     allows local users to bypass the 'strict page     permissions' protection mechanism and modify the     system-call table and, consequently, gain privileges by     leveraging write access.(CVE-2015-8967)The Linux kernel     before 3.11 on ARM platforms, as used in Android before     2016-08-05 on Nexus 5 and 7 (2013) devices, does not     properly consider user-space access to the TPIDRURW     register, which allows local users to gain privileges     via a crafted application, aka Android internal bug     28749743 and Qualcomm internal bug     CR561044.(CVE-2014-9870)A NULL pointer dereference     security flaw was found in the Linux kernel in the     vcpu_scan_ioapic() function in arch/x86/kvm/x86.c. This     allows local users with certain privileges to cause a     denial of service via a crafted system call to the KVM     subsystem.(CVE-2018-19407)It was found that current     implementation of kl5kusb105 driver failed to detect     short transfers when attempting to read the line state     and logged the content of the uninitialized heap     transfer buffer.(CVE-2017-5549)

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.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, information leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2013-0343     George Kargiotakis reported an issue in the temporary     address handling of the IPv6 privacy extensions. Users     on the same LAN can cause a denial of service or obtain     access to sensitive information by sending router     advertisement messages that cause temporary address     generation to be disabled.

  - CVE-2013-2147     Dan Carpenter reported issues in the cpqarray driver for     Compaq Smart2 Controllers and the cciss driver for HP     Smart Array controllers allowing users to gain access to     sensitive kernel memory.

  - CVE-2013-2889     Kees Cook discovered missing input sanitization in the     HID driver for Zeroplus game pads that could lead to a     local denial of service.

  - CVE-2013-2893     Kees Cook discovered that missing input sanitization in     the HID driver for various Logitech force feedback     devices could lead to a local denial of service.

  - CVE-2013-2929     Vasily Kulikov discovered that a flaw in the     get_dumpable() function of the ptrace subsytsem could     lead to information disclosure. Only systems with the     fs.suid_dumpable sysctl set to a non-default value of     '2' are vulnerable.

  - CVE-2013-4162     Hannes Frederic Sowa discovered that incorrect handling     of IPv6 sockets using the UDP_CORK option could result     in denial of service.

  - CVE-2013-4299     Fujitsu reported an issue in the device-mapper     subsystem. Local users could gain access to sensitive     kernel memory.

  - CVE-2013-4345     Stephan Mueller found in bug in the ANSI pseudo random     number generator which could lead to the use of less     entropy than expected.

  - CVE-2013-4512     Nico Golde and Fabian Yamaguchi reported an issue in the     user mode linux port. A buffer overflow condition exists     in the write method for the /proc/exitcode file. Local     users with sufficient privileges allowing them to write     to this file could gain further elevated privileges.

  - CVE-2013-4587     Andrew Honig of Google reported an issue in the KVM     virtualization subsystem. A local user could gain     elevated privileges by passing a large vcpu_id     parameter.

  - CVE-2013-6367     Andrew Honig of Google reported an issue in the KVM     virtualization subsystem. A divide-by-zero condition     could allow a guest user to cause a denial of service on     the host (crash).

  - CVE-2013-6380     Mahesh Rajashekhara reported an issue in the aacraid     driver for storage products from various vendors. Local     users with CAP_SYS_ADMIN privileges could gain further     elevated privileges.

  - CVE-2013-6381     Nico Golde and Fabian Yamaguchi reported an issue in the     Gigabit Ethernet device support for s390 systems. Local     users could cause a denial of service or gain elevated     privileges via the SIOC_QETH_ADP_SET_SNMP_CONTROL ioctl.

  - CVE-2013-6382     Nico Golde and Fabian Yamaguchi reported an issue in the     XFS filesystem. Local users with CAP_SYS_ADMIN     privileges could gain further elevated privileges.

  - CVE-2013-6383     Dan Carpenter reported an issue in the aacraid driver     for storage devices from various vendors. A local user     could gain elevated privileges due to a missing     privilege level check in the aac_compat_ioctl function.

  - CVE-2013-7263 CVE-2013-7264 CVE-2013-7265     mpb reported an information leak in the recvfrom,     recvmmsg and recvmsg system calls. A local user could     obtain access to sensitive kernel memory.

  - CVE-2013-7339     Sasha Levin reported an issue in the RDS network     protocol over Infiniband. A local user could cause a     denial of service condition.

  - CVE-2014-0101     Nokia Siemens Networks reported an issue in the SCTP     network protocol subsystem. Remote users could cause a     denial of service (NULL pointer dereference).

  - CVE-2014-1444     Salva Peiro reported an issue in the FarSync WAN driver.
    Local users with the CAP_NET_ADMIN capability could gain     access to sensitive kernel memory.

  - CVE-2014-1445     Salva Peiro reported an issue in the wanXL serial card     driver. Local users could gain access to sensitive     kernel memory.

  - CVE-2014-1446     Salva Peiro reported an issue in the YAM radio modem     driver. Local users with the CAP_NET_ADMIN capability     could gain access to sensitive kernel memory.

  - CVE-2014-1874     Matthew Thode reported an issue in the SELinux     subsystem. A local user with CAP_MAC_ADMIN privileges     could cause a denial of service by setting an empty     security context on a file.

  - CVE-2014-2039     Martin Schwidefsky reported an issue on s390 systems. A     local user could cause a denial of service (kernel oops)     by executing an application with a linkage stack     instruction.

  - CVE-2014-2523     Daniel Borkmann provided a fix for an issue in the     nf_conntrack_dccp module. Remote users could cause a     denial of service (system crash) or potentially gain     elevated privileges.

Multiple vulnerabilities has been found and corrected in the Linux kernel :

The Linux kernel before 3.12.2 does not properly use the get_dumpable function, which allows local users to bypass intended ptrace restrictions or obtain sensitive information from IA64 scratch registers via a crafted application, related to kernel/ptrace.c and arch/ia64/include/asm/processor.h (CVE-2013-2929).

The perf_trace_event_perm function in kernel/trace/trace_event_perf.c in the Linux kernel before 3.12.2 does not properly restrict access to the perf subsystem, which allows local users to enable function tracing via a crafted application (CVE-2013-2930).

Multiple integer overflows in Alchemy LCD frame-buffer drivers in the Linux kernel before 3.12 allow local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted mmap operations, related to the (1) au1100fb_fb_mmap function in drivers/video/au1100fb.c and the (2) au1200fb_fb_mmap function in drivers/video/au1200fb.c (CVE-2013-4511).

Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by leveraging root privileges for a write operation (CVE-2013-4512).

Multiple buffer overflows in drivers/staging/wlags49_h2/wl_priv.c in the Linux kernel before 3.12 allow local users to cause a denial of service or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability and providing a long station-name string, related to the (1) wvlan_uil_put_info and (2) wvlan_set_station_nickname functions (CVE-2013-4514).

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-2013-4515).

Memory leak in the __kvm_set_memory_region function in virt/kvm/kvm_main.c in the Linux kernel before 3.9 allows local users to cause a denial of service (memory consumption) by leveraging certain device access to trigger movement of memory slots (CVE-2013-4592).

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-2013-6378).

The aac_send_raw_srb function in drivers/scsi/aacraid/commctrl.c in the Linux kernel through 3.12.1 does not properly validate a certain size value, which allows local users to cause a denial of service (invalid pointer dereference) or possibly have unspecified other impact via an FSACTL_SEND_RAW_SRB ioctl call that triggers a crafted SRB command (CVE-2013-6380).

Buffer overflow in the qeth_snmp_command function in drivers/s390/net/qeth_core_main.c in the Linux kernel through 3.12.1 allows local users to cause a denial of service or possibly have unspecified other impact via an SNMP ioctl call with a length value that is incompatible with the command-buffer size (CVE-2013-6381).

The aac_compat_ioctl function in drivers/scsi/aacraid/linit.c in the Linux kernel before 3.11.8 does not require the CAP_SYS_RAWIO capability, which allows local users to bypass intended access restrictions via a crafted ioctl call (CVE-2013-6383).

The uio_mmap_physical function in drivers/uio/uio.c in the Linux kernel before 3.12 does not validate the size of a memory block, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted mmap operations, a different vulnerability than CVE-2013-4511 (CVE-2013-6763).

The updated packages provides a solution for these security issues.

ID	Name	Product	Family	Type	Severity
290572	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000871)	Nessus	Unity Linux Local Security Checks	Local	high
287339	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002375)	Nessus	Unity Linux Local Security Checks	Local	high
286448	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001877)	Nessus	Unity Linux Local Security Checks	Local	high
124826	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1503)	Nessus	Huawei Local Security Checks	Local	critical
73713	Debian DSA-2906-1 : linux-2.6 - privilege escalation/denial of service/information leak	Nessus	Debian Local Security Checks	Local	critical
71511	Mandriva Linux Security Advisory : kernel (MDVSA-2013:291)	Nessus	Mandriva Local Security Checks	Local	medium

Detections

Analytics

CVE-2013-4512

high

Tenable Plugins

high

high

high

critical

critical

medium