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CVSS: 7.2EPSS: 0%CPEs: 11EXPL: 4

Race condition in the find_keyring_by_name function in security/keys/keyring.c in the Linux kernel 2.6.34-rc5 and earlier allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via keyctl session commands that trigger access to a dead keyring that is undergoing deletion by the key_cleanup function. Condición de carrera en la función find_keyring_by_name en security/keys/keyring.c el el kernel de Linux v2.6.34-rc5 y anteriores, permite usuarios locales provocar una denegación de servicio (corrupción de memoria y caída del sistema) o posiblemente tener otros impactos, mediante comandos de sesión "keyctl" que provocan el acceso a una secuencia de pulsaciones en desuso que está bajo un borrado en la función key_cleanup. • https://www.exploit-db.com/exploits/33886 http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00006.html http://marc.info/?l=linux-kernel&m=127192182917857&w=2 http://marc.info/?l=linux-kernel&m=127274294622730&w=2 http://marc.info/?l=linux-kernel&m=127292492727029&w=2 http://secunia.com/advisories/39830 http://secunia.com/advisories/40218 http://secunia.com/advisories/40645 http://secunia.com/advisories/43315 http://www.debian.org/security/2010/dsa-205 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •

CVSS: 2.1EPSS: 0%CPEs: 2EXPL: 3

The TSB I-TLB load implementation in arch/sparc/kernel/tsb.S in the Linux kernel before 2.6.33 on the SPARC platform does not properly obtain the value of a certain _PAGE_EXEC_4U bit and consequently does not properly implement a non-executable stack, which makes it easier for context-dependent attackers to exploit stack-based buffer overflows via a crafted application. La implementación TSB I-TLB en arch/sparc/kernel/tsb.S en el kernel de Linux anterior a v2.6.33 en plataformas SPARC, no obtiene de forma adecuada ciertos bits _PAGE_EXEC_4U y consecuentemente no implementa de forma adecuada una pila no-ejecutable, lo que facilita a atacantes dependiendo del contexto explotar desbordamientos de búfer basados en pila a través de aplicaciones manipuladas. • http://marc.info/?l=linux-sparc&m=126662159602378&w=2 http://marc.info/?l=linux-sparc&m=126662196902830&w=2 http://secunia.com/advisories/39830 http://www.debian.org/security/2010/dsa-2053 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.33 http://www.openwall.com/lists/oss-security/2010/02/24/1 http://www.openwall.com/lists/oss-security/2010/05/05/2 • CWE-787: Out-of-bounds Write •

CVSS: 7.2EPSS: 0%CPEs: 147EXPL: 0

The release_one_tty function in drivers/char/tty_io.c in the Linux kernel before 2.6.34-rc4 omits certain required calls to the put_pid function, which has unspecified impact and local attack vectors. La función release_one_tty de drivers/char/tty_io.c del kernel de Linux en versiones anteriores a la 2.6.34-rc4 omite determinadas llamadas que se requieren a la función put_pid, lo que tiene un impacto sin especificar y vectores de ataque locales. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6da8d866d0d39e9509ff826660f6a86a6757c966 http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00006.html http://secunia.com/advisories/39830 http://secunia.com/advisories/40645 http://www.debian.org/security/2010/dsa-2053 http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.34-rc4 http://www.mandriva.com/security/advisories?name=MDVSA-2010:198 http://www.openwall.com/lists/oss- •

CVSS: 2.1EPSS: 0%CPEs: 147EXPL: 0

The proc_oom_score function in fs/proc/base.c in the Linux kernel before 2.6.34-rc4 uses inappropriate data structures during selection of a candidate for the OOM killer, which might allow local users to cause a denial of service via unspecified patterns of task creation. La función proc_oom_score de fs/proc/base.c en el kernel de Linux en versiones anteriores a la 2.6.34-rc4 utiliza de forma inapropiada estructuras de datos durante la selección de un candidato para ser tratado por el procesdo OOM killer, lo que puede permitir a usuarios locales provocar una denegación de servicio a través de patrones sin especificar de creación de tareas. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b95c35e76b29ba812e5dabdd91592e25ec640e93 http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.34-rc4 http://www.openwall.com/lists/oss-security/2010/04/14/1 https://bugzilla.redhat.com/show_bug.cgi?id=582068 • CWE-399: Resource Management Errors •

CVSS: 7.8EPSS: 22%CPEs: 243EXPL: 0

The virtio_net_bad_features function in hw/virtio-net.c in the virtio-net driver in the Linux kernel before 2.6.26, when used on a guest OS in conjunction with qemu-kvm 0.11.0 or KVM 83, allows remote attackers to cause a denial of service (guest OS crash, and an associated qemu-kvm process exit) by sending a large amount of network traffic to a TCP port on the guest OS, related to a virtio-net whitelist that includes an improper implementation of TCP Segment Offloading (TSO). La funcion virtio_net_bad_features en hw/virtio-net.c en el driver virtio-net en el kernel de Linux anterior a v2.6.26, cuando utiliza un sistema operativo invitado en conjunción con qemu-kvm 0.11.0 o KVM 83, permite a atacantes remotos producir una denegación de servicio (caída del sistema operativo invitado, y una salida del proceso de asociación qemu-kvm) mediante el envío de una gran cantidad de trafico TCP al puerto del sistema operativo invitado, relacionado con la lista blanca de virtio-net que incluye una implementación inadecuada de TCP Segment Offloading (TSO). • http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=184bd0484533b725194fa517ddc271ffd74da7c9 http://lists.gnu.org/archive/html/qemu-devel/2009-10/msg02480.html http://lists.gnu.org/archive/html/qemu-devel/2009-10/msg02495.html http://openwall.com/lists/oss-security/2010/03/29/4 http://securitytracker.com/id?1023798 http://www.redhat.com/support/errata/RHSA-2010-0271.html http://www.vupen.com/english/advisories/2010/0760 https://bugs.edge.launchpad.net/ubuntu/+s • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •