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CVSS: 4.9EPSS: 0%CPEs: 2EXPL: 3

The xfs_da3_fixhashpath function in fs/xfs/xfs_da_btree.c in the xfs implementation in the Linux kernel before 3.14.2 does not properly compare btree hash values, which allows local users to cause a denial of service (filesystem corruption, and OOPS or panic) via operations on directories that have hash collisions, as demonstrated by rmdir operations. La función xfs_da3_fixhashpath en fs/xfs/xfs_da_btree.c en la implementación xfs en el kernel de Linux anterior a 3.14.2 no compara debidamente los valores de hashes btree, lo que permite a usuarios locales causar una denegación de servicio (corrupción del sistema de ficheros y OOPS o pánico) a través de operaciones sobre directorios que tienen colisiones de hashes, tal y como fue demostrado por operaciones rmdir. A denial of service flaw was found in the way the Linux kernel's XFS file system implementation ordered directory hashes under certain conditions. A local attacker could use this flaw to corrupt the file system by creating directories with colliding hash values, potentially resulting in a system crash. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c88547a8119e3b581318ab65e9b72f27f23e641d http://marc.info/?l=linux-xfs&m=139590613002926&w=2 http://rhn.redhat.com/errata/RHSA-2014-1943.html http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.2 http://www.openwall.com/lists/oss-security/2014/10/01/29 http://www.securityfocus.com/bid/70261 https://bugzilla.redhat.com/show_bug.cgi?id=1148777 https://github.com/torvalds/linux/co • CWE-399: Resource Management Errors •

CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 1

The pivot_root implementation in fs/namespace.c in the Linux kernel through 3.17 does not properly interact with certain locations of a chroot directory, which allows local users to cause a denial of service (mount-tree loop) via . (dot) values in both arguments to the pivot_root system call. La implementación pivot_root en fs/namespace.c en el kernel de Linux hasta 3.17 no interactúa debidamente con ciertas localizaciones de un directorio chroot, lo que permite a usuarios locales causar una denegación de servicio (bucle de montaje de árbol) a través de valores . (punto) en ambos argumentos en la llamada de sistema pivot_root. • http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html http://secunia.com/advisories/60174 http://secunia.com/advisories/61142 http://www.openwall.com/lists/oss-security/2014/10/08/21 http://www.securityfocus.com/bid/70319 http://www.securitytracker.com/id/1030991 http://www.spinics.net/lists/linux-fsdevel/msg79153.html http://www.ubuntu.com/usn/USN-2419-1 http://www.ubuntu.com/usn/USN-2420-1 http://www.ubuntu.com/usn/USN-2513-1 http: • CWE-400: Uncontrolled Resource Consumption •

CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0

The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call. La función do_umount en fs/namespace.c en el kernel de Linux hasta 3.17 no requiere la capacidad CAP_SYS_ADMIN para llamadas do_remount_sb que cambian el sistema de ficheros root a sólo lectura, lo que permite a usuarios locales causar una denegación de servicio (pérdida de la habilidad de escritura) mediante la realización de ciertas llamadas a la liberación de sistemas, la limpieza del indicador / MNT_LOCKED, y la realización de una llamada al sistema umount MNT_FORCE. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef3a56b1c466629cd0bf482b09c7b0e5a085bb5 http://secunia.com/advisories/60174 http://secunia.com/advisories/61145 http://secunia.com/advisories/62633 http://secunia.com/advisories/62634 http://thread.gmane.org/gmane.linux.kernel.stable/109312 http://www.openwall.com/lists/oss-security/2014/10/08/22 http://www.securityfocus.com/bid/70314 http://www.securitytracker.com/id/1031180 http://www.ubuntu.com/usn/US •

CVSS: 4.7EPSS: 0%CPEs: 2EXPL: 3

Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag. Condición de carrera en la función ext4_file_write_iter en fs/ext4/file.c en el kernel de Linux hasta 3.17 permite a usuarios locales causar una denegación de servicio (no disponibilidad de ficheros) a través de una combinación de una acción de escritura y una operación F_SETFL fcntl para el indicador O_DIRECT. A race condition flaw was found in the Linux kernel's ext4 file system implementation that allowed a local, unprivileged user to crash the system by simultaneously writing to a file and toggling the O_DIRECT flag using fcntl(F_SETFL) on that file. • http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html http://rhn.redhat.com/errata/RHSA-2015-0290.html http://rhn.redhat.com/errata/RHSA-2015-0694.html http://www.openwall.com/lists/oss-security/2014/10/09/25 http://www.securityfocus.com/bid/70376 http://www.spinics.net/lists/linux-ext4/msg45683.html http://www.spinics.net/lists/linux-ext4/msg45685.html https://bugzilla.redhat.com/show_bug.cgi?id=1151353 https://exchange.xforce.ibmcloud.com/vulnerabi • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVSS: 4.9EPSS: 0%CPEs: 4EXPL: 1

The __udf_read_inode function in fs/udf/inode.c in the Linux kernel through 3.16.3 does not restrict the amount of ICB indirection, which allows physically proximate attackers to cause a denial of service (infinite loop or stack consumption) via a UDF filesystem with a crafted inode. La función __udf_read_inode en fs/udf/inode.c en el kernel de Linux hasta 3.16.3 no restringe la cantidad de indirección ICB, lo que permite a atacantes físicamente próximos causar una denegación de servicio (bucle infinito o consumo de la pila) a través de un sistema de ficheros UDF con un inodo manipulado. A stack overflow flaw caused by infinite recursion was found in the way the Linux kernel's Universal Disk Format (UDF) file system implementation processed indirect Information Control Blocks (ICBs). An attacker with physical access to the system could use a specially crafted UDF image to crash the system. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c03aa9f6e1f938618e6db2e23afef0574efeeb65 http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html http://marc.info/?l=bugtraq&m=142722450701342&w=2 http://marc.info/?l=bugtraq&m=142722544401658&w=2 http://rhn.redhat.com/errata/RHSA-2014-1318.html http://www.openwall.com/lists/oss-security/2014/09/15/9 http: • CWE-399: Resource Management Errors CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •