CVSS: 4.3EPSS: 0%CPEs: 8EXPL: 1CVE-2014-3601 – kernel: kvm: invalid parameter passing in kvm_iommu_map_pages()
https://notcve.org/view.php?id=CVE-2014-3601
The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.16.1 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to (1) cause a denial of service (host OS memory corruption) or possibly have unspecified other impact by triggering a large gfn value or (2) cause a denial of service (host OS memory consumption) by triggering a small gfn value that leads to permanently pinned pages. La función kvm_iommu_map_pages en virt/kvm/iommu.c en el kernel de Linux hasta 3.16.1 calcula erróneamente el número de las páginas durante el manejo de un fallo en las asignaciones, lo que permite a usuarios del sistema operativo invitado (1) causar una denegación de servicio (corrupción de la memoria del sistema operativo anfitrión) o posiblemente tener otro impacto no especificado mediante la provocación de un valor gfn grande o (2) causar una denegación de servicio (corrupción de la memoria del sistema operativo anfitrión) mediante la provocación de un valor gfn pequeño que conduce a páginas fijadas (pinned) permanentemente. A flaw was found in the way the Linux kernel's kvm_iommu_map_pages() function handled IOMMU mapping failures. A privileged user in a guest with an assigned host device could use this flaw to crash the host. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7 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/msg00015.html http://secunia.com/advisories/60830 http://www.securityfocus.com/bid/69489 http://www.ubuntu.com/usn/USN-2356-1 http://www.ubuntu.com/usn/USN-2357&# • CWE-189: Numeric Errors •
CVSS: 6.2EPSS: 0%CPEs: 3EXPL: 3CVE-2014-5207 – Linux Kernel < 3.16.1 - 'Remount FUSE' Local Privilege Escalation
https://notcve.org/view.php?id=CVE-2014-5207
fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace. fs/namespace.c en el kernel de Linux hasta 3.16.1 no restringe debidamente la limpieza MNT_NODEV, MNT_NOSUID, y MNT_NOEXEC y el cambio MNT_ATIME_MASK durante un remontaje de un montaje bind, lo que permite a usuarios locales ganar privilegios, interferir con copias de seguridad y auditoria en sistemas que tenían atime habilitado, o causar una denegación de servicio (la actualización excesiva de sistemas de ficheros) en sistemas que tenían atime deshabilitado a través de un comando 'mount -o remount' dentro de un espacio para el nombre del usuario. • https://www.exploit-db.com/exploits/34923 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705 http://osvdb.org/show/osvdb/110055 http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.html http://seclists.org/oss-sec/2014/q3/352 http://www.exploit-db.com/exploits/34923 http://www.openwall.com/lists/oss-security/2014/08/13/4 http://www.securityfocus.com/bid/69216 http:/& • CWE-269: Improper Privilege Management •
CVSS: 7.2EPSS: 0%CPEs: 6EXPL: 0CVE-2014-5206
https://notcve.org/view.php?id=CVE-2014-5206
The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace. La función do_remount en fs/namespace.c en el kernel de Linux hasta 3.16.1 no mantiene el bit MNT_LOCK_READONLY durante el remontaje de un montaje bind, lo que permite a usuarios locales evadir las restricciones de sólo lectura y vencer ciertos mecanismos de protección sandbox a través de un comando 'mount -o remount' dentro de un espacio para el nombre del usuario. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd http://www.openwall.com/lists/oss-security/2014/08/13/4 http://www.securityfocus.com/bid/69214 http://www.ubuntu.com/usn/USN-2317-1 http://www.ubuntu.com/usn/USN-2318-1 https://bugzilla.redhat.com/show_bug.cgi?id=1129662 https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd • CWE-269: Improper Privilege Management •
CVSS: 7.1EPSS: 2%CPEs: 16EXPL: 0CVE-2014-5077 – Kernel: net: SCTP: fix a NULL pointer dereference during INIT collisions
https://notcve.org/view.php?id=CVE-2014-5077
The sctp_assoc_update function in net/sctp/associola.c in the Linux kernel through 3.15.8, when SCTP authentication is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by starting to establish an association between two endpoints immediately after an exchange of INIT and INIT ACK chunks to establish an earlier association between these endpoints in the opposite direction. La función sctp_assoc_update en net/sctp/associola.c en el kernel de Linux hasta 3.15.8, cuando la autenticación SCTP está habilitada, permite a atacantes remotos causar una denegación de servicio (referencia a puntero nulo y OOPS) mediante el inicio del establecimiento de una asociación entre dos endpoints inmediatamente después de un intercambio de fragmentos INIT y INIT ACK para establecer una asociación anterior entre estos endpoints en la dirección opuesta. A NULL pointer dereference flaw was found in the way the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation handled simultaneous connections between the same hosts. A remote attacker could use this flaw to crash the system. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1be9a950c646c9092fb3618197f7b6bfb50e82aa http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html http://rhn.redhat.com/errata/RHSA-2014-1083.html http://rhn.redhat.com/errata/RHSA-2014-1668.html http://rhn.redhat.com/errata/RHSA-2014-1763.html http://secunia.com/advisories/59777 http://secunia.com/advisories/60430 h • CWE-476: NULL Pointer Dereference •
CVSS: 6.2EPSS: 0%CPEs: 4EXPL: 1CVE-2014-5045 – kernel: vfs: refcount issues during unmount on symlink
https://notcve.org/view.php?id=CVE-2014-5045
The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program. La función mountpoint_last en fs/namei.c en el kernel de Linux anterior a 3.15.8 no mantiene debidamente cierta cuenta de referencias durante intentos de utilizar la llamada al sistema umount en conjunto con un enlace simbólico, lo que permite a usuarios locales causar una denegación de servicio (consumo de memoria o uso después de liberación) o posiblemente tener otro impacto no especificado a través del programa umount. A flaw was found in the way the Linux kernel's VFS subsystem handled reference counting when performing unmount operations on symbolic links. A local, unprivileged user could use this flaw to exhaust all available memory on the system or, potentially, trigger a use-after-free error, resulting in a system crash or privilege escalation. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212 http://rhn.redhat.com/errata/RHSA-2015-0062.html http://secunia.com/advisories/60353 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8 http://www.openwall.com/lists/oss-security/2014/07/24/2 http://www.securityfocus.com/bid/68862 https://bugzilla.redhat.com/show_bug.cgi?id=1122472 https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •