CVSS: 4.9EPSS: 0%CPEs: 1EXPL: 0CVE-2014-7843
https://notcve.org/view.php?id=CVE-2014-7843
The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary. La función __clear_user en arch/arm64/lib/clear_user.S en el kernel de Linux anterior a 3.17.4 en la plataforma ARM64 permite a usuarios locales causar una denegación de servicio (caída del sistema) mediante la lectura de un byte más allá del límite de página /dev/zero. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=97fc15436b36ee3956efad83e22a557991f7d19d http://secunia.com/advisories/62305 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4 http://www.openwall.com/lists/oss-security/2014/11/13/5 http://www.securityfocus.com/bid/71082 https://bugzilla.redhat.com/show_bug.cgi?id=1163744 https://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d • CWE-17: DEPRECATED: Code •
CVSS: 4.9EPSS: 0%CPEs: 204EXPL: 0CVE-2014-9090
https://notcve.org/view.php?id=CVE-2014-9090
The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite. La función do_double_fault en arch/x86/kernel/traps.c en el kernel de Linux hasta 3.17.4 no maneja debidamente los fallos asociados con el registro de segmentos Stack Segment (SS), lo que permite a usuarios locales causar una denegación de servicio (pánico) a través de una llamada al sistema modify_ldt, tal y como fue demostrado por sigreturn_32 en el suite de pruebas 'linux-clock-tests'. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6f442be2fb22be02cafa606f1769fa1e6f894441 http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html http://secunia.com/advisories/62336 http://www.debian.org/security/2014/dsa-3093 http://www.openwall.com/lists/oss-security/2014/11/26/5 https:// • CWE-17: DEPRECATED: Code •
CVSS: 4.6EPSS: 0%CPEs: 204EXPL: 1CVE-2014-8989
https://notcve.org/view.php?id=CVE-2014-8989
The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other category, aka a "negative groups" issue, related to kernel/groups.c, kernel/uid16.c, and kernel/user_namespace.c. El kernel de Linux hasta 3.17.4 no restringe debidamente la colocación de afiliaciones a grupos suplementarios en ciertos escenarios de espacios para nombres, lo que permite a usuarios locales evadir los permisos de ficheros mediante el aprovechamiento de un POSIX ACL que contiene una entrada para la categoría de grupo que está más restrictiva que la entrada para la otra categoría, también conocido como un problema de 'grupos negativos', relacionado con kernel/groups.c, kernel/uid16.c, y kernel/user_namespace.c. • http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html http://thread.gmane.org/gmane.linux.man/7385 http://www.mandriva.com/security/advisories?name=MDVSA-2015:058 http://www.openwall.com/lists/oss-security/2014/11/20/4 http://www.securityfocus.com/bid/71154 http://www.ubuntu.com/usn/USN-2515-1 http://www.ubuntu.com/usn/USN-2516-1 http://www.ubuntu.com/usn/US • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 4.9EPSS: 0%CPEs: 1EXPL: 0CVE-2010-5313 – kernel: kvm: reporting emulation failures to userspace
https://notcve.org/view.php?id=CVE-2010-5313
Race condition in arch/x86/kvm/x86.c in the Linux kernel before 2.6.38 allows L2 guest OS users to cause a denial of service (L1 guest OS crash) via a crafted instruction that triggers an L2 emulation failure report, a similar issue to CVE-2014-7842. Condición de carrera en arch/x86/kvm/x86.c en el kernel de Linux anterior a 2.6.38 permite a usuarios del sistema operativo L2 invitado causar una denegación de servicio (caída del sistema operativo L1 invitado) a través de una instrucción manipulada que provoca un informe de fallo de emulación en L2, un problema similar a CVE-2014-7842. It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. Please note that on certain systems, HPET is mapped to userspace as part of vdso (vvar) and thus an unprivileged user may generate MMIO transactions (and enter the emulator) this way. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc3a9157d3148ab91039c75423da8ef97be3e105 http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.38 http://rhn.redhat.com/errata/RHSA-2016-0855.html http://www.openwall.com/lists/oss-security/2014/11/13/7 http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html http://www.oracle.com/technetwork/topics/sec • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 4.9EPSS: 0%CPEs: 204EXPL: 0CVE-2014-7842 – kernel: kvm: reporting emulation failures to userspace
https://notcve.org/view.php?id=CVE-2014-7842
Race condition in arch/x86/kvm/x86.c in the Linux kernel before 3.17.4 allows guest OS users to cause a denial of service (guest OS crash) via a crafted application that performs an MMIO transaction or a PIO transaction to trigger a guest userspace emulation error report, a similar issue to CVE-2010-5313. Condición de carrera en arch/x86/kvm/x86.c en el kernel de Linux anterior a 3.17.4 permite a usuarios del sistema operativo invitado causar una denegación de servicio (caída del sistema operativo invitado) a través de una aplicación manipulada que realiza una transacción MMIO o una transacción PIO para provocar un informe de error de emulación en el espacio del usuario invitado, un problema similar a CVE-2010-5313. It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. Please note that on certain systems, HPET is mapped to userspace as part of vdso (vvar) and thus an unprivileged user may generate MMIO transactions (and enter the emulator) this way. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a2b9e6c1a35afcc0973acb72e591c714e78885ff http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html http://rhn.redhat.com/errata/RHSA-2016-0855.html http://secunia.com/advisories/62305 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •