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CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 0

12 Jun 2018 — In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash. En net/socket.c en el kernel de Linux hasta la versión 4.17.1, hay una condición de carrera entr... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-476: NULL Pointer Dereference •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

05 Jun 2018 — The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed process's final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper's unmap_page_range() since the vma's VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked). Las versiones 4.14, 4.15 ... • http://seclists.org/oss-sec/2018/q2/67 • CWE-476: NULL Pointer Dereference •

CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 3

28 May 2018 — The compat_get_timex function in kernel/compat.c in the Linux kernel before 4.16.9 allows local users to obtain sensitive information from kernel memory via adjtimex. Se ha descubierto un problema en Moodle 3.x. Al sustituir URL en los portfolios, los usuarios pueden instanciar cualquier clase. Esto también puede ser explotado por usuarios que hayan iniciado sesión como invitados para lanzar un ataque DDoS. It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implemen... • https://packetstorm.news/files/id/151241 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0

28 May 2018 — The sr_do_ioctl function in drivers/scsi/sr_ioctl.c in the Linux kernel through 4.16.12 allows local users to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact because sense buffers have different sizes at the CDROM layer and the SCSI layer, as demonstrated by a CDROMREADMODE2 ioctl call. La función sr_do_ioctl en drivers/scsi/sr_ioctl.c en el kernel de Linux hasta 4.16.12 permite a los usuarios locales causar una denegación de servicio (desbordamiento de búfe... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f7068114d45ec55996b9040e98111afa56e010fe • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 6.8EPSS: 3%CPEs: 3EXPL: 4

24 May 2018 — In the Linux kernel 4.13 through 4.16.11, ext4_read_inline_data() in fs/ext4/inline.c performs a memcpy with an untrusted length value in certain circumstances involving a crafted filesystem that stores the system.data extended attribute value in a dedicated inode. En el kernel de Linux de la versión 4.13 hasta la 4.16.11, ext4_read_inline_data() en fs/ext4/inline.c realiza un memcpy con un valor de longitud no fiable en ciertas circunstancias que implica un sistema de archivos manipulado que almacena el va... • https://packetstorm.news/files/id/148054 • CWE-416: Use After Free CWE-805: Buffer Access with Incorrect Length Value •

CVSS: 5.3EPSS: 0%CPEs: 8EXPL: 3

22 May 2018 — A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc//cmdline (or /proc//environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks). Se ha encontrado un error que afe... • https://packetstorm.news/files/id/147806 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Heap-based Buffer Overflow •

CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0

10 May 2018 — Linux kernel vhost since version 4.8 does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file. El vhost del kernel de Linux desde la versión 4.8 no inicializa correctamente la memoria en los mensajes que se pasan entre invitados virtuales y el sistema operativo host en la función vhost/vhos... • https://access.redhat.com/errata/RHSA-2018:2948 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-665: Improper Initialization •

CVSS: 5.5EPSS: 0%CPEs: 14EXPL: 0

10 May 2018 — Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted system calls. El kernel de Linux en versiones anteriores a la 4.16-rc7 es vulnerable a una desreferencia de puntero NULL en la función dccp_write_xmit() en net/dccp/output.c en la que un usuario local puede provocar una denegación de servicio mediante un número de llamadas del sistema manipu... • https://access.redhat.com/errata/RHSA-2018:1854 • CWE-476: NULL Pointer Dereference •

CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0

09 May 2018 — The cdrom_ioctl_media_changed function in drivers/cdrom/cdrom.c in the Linux kernel before 4.16.6 allows local attackers to use a incorrect bounds check in the CDROM driver CDROM_MEDIA_CHANGED ioctl to read out kernel memory. La función cdrom_ioctl_media_changed en drivers/cdrom/cdrom.c en el kernel de Linux en versiones anteriores a la 4.16.6 permite que atacantes locales empleen una comprobación de límites incorrecta en el ioctl CDROM_MEDIA_CHANGED del controlador CDROM para leer la memoria del kernel. A ... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9de4ee40547fd315d4a0ed1dd15a2fa3559ad707 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.9EPSS: 0%CPEs: 4EXPL: 1

01 May 2018 — kernel drivers before version 4.17-rc1 are vulnerable to a weakness in the Linux kernel's implementation of random seed data. Programs, early in the boot sequence, could use the data allocated for the seed before it was sufficiently generated. Los controladores de kernel, en versiones anteriores a la 4.17-rc1, son vulnerables a una debilidad en la implementación del kernel de Linux de datos de semilla aleatorios. Los programas, en un estado de arranque temprano, podrían emplear los datos asignados a la semi... • https://packetstorm.news/files/id/147423 • CWE-330: Use of Insufficiently Random Values •