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CVSS: 4.9EPSS: 0%CPEs: 6EXPL: 0

The vsock_stream_sendmsg function in net/vmw_vsock/af_vsock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. La función vsock_stream_sendmsg en net/vmw_vsock/af_vsock.c en el kernel de Linux anterior a v3.9-rc7 no inicializa cierta longitud de variable, lo que permite a usuarios locales obtener información sensible desde la pila del kernel mediante una syscall recvmsg o recvfrom. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d5e0d0f607a7a029c6563a0470d88255c89a8d11 http://www.openwall.com/lists/oss-security/2013/04/14/3 https://github.com/torvalds/linux/commit/d5e0d0f607a7a029c6563a0470d88255c89a8d11 https://lkml.org/lkml/2013/4/14/107 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 4

Integer overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of Android 4.1.2 and other products, allows local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted /dev/graphics/fb0 mmap2 system calls, as demonstrated by the Motochopper pwn program. Una determinada version de Android v4.1.2 en dispositivos Motorola Razr HD, Razr M, y Atrix HD con el chipset Qualcomm MSM8960 permite a atacantes físicamente próximos obtener acceso de root entrando en el modo de depuración USB, usando Android Debug Bridge (ADB) para establecer una conexión USB, y cargar y ejecutar el programa pwn Motochopper. An integer overflow flaw was found in the way the Linux kernel's Frame Buffer device implementation mapped kernel memory to user space via the mmap syscall. A local user able to access a frame buffer device file (/dev/fb*) could possibly use this flaw to escalate their privileges on the system. Linux kernel fb_mmap function in drivers/video/fbmem.c contains an integer overflow vulnerability that allows for privilege escalation. • http://forum.xda-developers.com/showthread.php?t=2255491 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b4cbb197c7e7a68dbad0d491242e3ca67420c13e http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc9bbca8f650e5f738af8806317c0a041a48ae4a http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://marc.info/? • CWE-190: Integer Overflow or Wraparound •

CVSS: 7.2EPSS: 0%CPEs: 216EXPL: 1

The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process. La implementación de la llamada al sistema clone en el kernel Linux anteriores a v3.8.3 no maneja de forma adecuada la combinación de las «flags» CLONE_NEWUSER y CLONE_FS, lo que permite a usuarios locales obtener privilegios llamando a chroot aprovechando la compartición del directorio / entre un proceso padre y un proceso hijo. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71 http://stealth.openwall.net/xSports/clown-newuser.c http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3 http://www.openwall.com/lists/oss-security/2013/03/14/6 https://bugzilla.redhat.com/show_bug.cgi?id=921448 https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71 • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 3.6EPSS: 0%CPEs: 4EXPL: 0

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call. La función flush_signal_handlers en kernel/signal.c en el núcleo de Linux anterior a v3.8.4 conserva el valor del campo sa_restorer a través de una operación exec, que hace más fácil a los usuarios de la zona para evitar el mecanismo de protección ASLR a través de una aplicación diseñado que contenga un sigaction system call llamar. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ca39528c01a933f6689cd6505ce65bd6d68a530 http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html http://rhn.redhat.com/errata/RHSA-2013-1051.html http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4 http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 http://www.openwall.com/lists/oss-security/2013/03/ • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 6.8EPSS: 0%CPEs: 5EXPL: 0

Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation. Vulnerabilidad después de liberación en arch/x86/kvm/x86.c en el kernel de Linux hasta v3.8.4 permite a los clientes usuarios del sistema operativo para causar una denegación de servicio (corrupción de memoria anfitrión OS) o posiblemente tener otro impacto no especificado a través de una aplicación hecha a mano que provoca el uso de una dirección física invitado (GPA) en (1) tipo movable ó (2) de memoria extraíble durante una operación MSR_KVM_SYSTEM_TIME kvm_set_msr_common. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0b79459b482e85cb7426aa7da683a9f2c97aeae1 http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html http://rhn.redhat.com/errata/RHSA-2013-0727.html http://rhn.redhat.com/errata/RHSA-2013-0744.html http://rhn.redhat.com/errata/RHSA-2013-0746.html http& • CWE-399: Resource Management Errors CWE-416: Use After Free •