CVSS: 5.9EPSS: 0%CPEs: 6EXPL: 1CVE-2018-7755 – kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c
https://notcve.org/view.php?id=CVE-2018-7755
An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR. Se descubrió un fallo de seguridad en la función fd_locked_ioct en drivers/block/floppy.c en el kernel de Linux hasta la versión 4.15.7. La unidad de disquete copiará un puntero kernel a la memoria del usuario en respuesta a la llamada IOCTL FDGETPRM. • https://access.redhat.com/errata/RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2043 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://lkml.org/lkml/2018/3/7/1116 https://usn.ubuntu.com/3695-1 https://usn.ubuntu.com/3695-2 https://usn.ubuntu.com/3696-1 https://usn.ubuntu.com/3696-2 https://usn.ubuntu.com/3697-1 https://usn.ubuntu.com/3697-2 https://usn.ubuntu.com/3698-1 https://usn.ubuntu.com/369 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 1CVE-2018-7740 – kernel: Denial of service in resv_map_release function in mm/hugetlb.c
https://notcve.org/view.php?id=CVE-2018-7740
The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call. La función resv_map_release en mm/hugetlb.c en el kernel de Linux hasta la versión 4.15.7 permite que usuarios locales provoquen una denegación de servicio (error) mediante una aplicación manipulada que realiza llamadas del sistema mmap y tiene un argumento grande pgoff en la llamada del sistema remap_file_pages. The resv_map_release function in mm/hugetlb.c in the Linux kernel, through 4.15.7, allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call. • http://www.securityfocus.com/bid/103316 https://access.redhat.com/errata/RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3096 https://bugzilla.kernel.org/show_bug.cgi?id=199037 https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html https://usn.ubuntu.com/3910-1 https://usn.ubuntu.com/3910-2 https://www.debian.org/security/2018/dsa-4187 https://www.debian.org/security/2018/dsa-4188 https://access.redhat.com/security/cve/CVE-2018-7740 htt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-18221
https://notcve.org/view.php?id=CVE-2017-18221
The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system calls. La función __munlock_pagevec en mm/mlock.c en el kernel de Linux, en versiones anteriores a la 4.11.4, permite que usuarios locales provoquen una denegación de servicio (corrupción de contabilidad NR_MLOCK) mediante el uso manipulado de llamadas del sistema mlockall y munlockall. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feee0e1ef331b22cc51f383d532a0d043fbdcc http://www.securityfocus.com/bid/103321 https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcc https://usn.ubuntu.com/3655-1 https://usn.ubuntu.com/3655-2 https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4 • CWE-20: Improper Input Validation •
CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 0CVE-2017-7518 – Kernel: KVM: debug exception via syscall emulation
https://notcve.org/view.php?id=CVE-2017-7518
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this. Se ha detectado un error en el kernel de Linux en versiones anteriores a la 4.12 en la forma en la que el módulo KVM procesó el bit trap flag(TF) en EFLAGS durante la emulación de la instrucción de la llamada del sistema, lo que conduce a que se lance una excepción de depuración (#DB) en la pila invitada. Un usuario/proceso en un invitado podría utilizar este error para escalar sus privilegios en el invitado. • http://www.openwall.com/lists/oss-security/2017/06/23/5 http://www.securityfocus.com/bid/99263 http://www.securitytracker.com/id/1038782 https://access.redhat.com/articles/3290921 https://access.redhat.com/errata/RHSA-2018:0395 https://access.redhat.com/errata/RHSA-2018:0412 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518 https://usn.ubuntu.com/3619-1 https://usn.ubuntu.com/3619-2 https://usn.ubuntu.com/3754-1 https://www.debian.org/security&# • CWE-250: Execution with Unnecessary Privileges CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 0CVE-2017-18218
https://notcve.org/view.php?id=CVE-2017-18218
In drivers/net/ethernet/hisilicon/hns/hns_enet.c in the Linux kernel before 4.13, local users can cause a denial of service (use-after-free and BUG) or possibly have unspecified other impact by leveraging differences in skb handling between hns_nic_net_xmit_hw and hns_nic_net_xmit. En drivers/net/ethernet/hisilicon/hns/hns_enet.c en el kernel de Linux, en versiones anteriores a la 4.13, los usuarios locales pueden provocar una denegación de servicio (uso de memoria previamente liberada y error) u otro tipo de impacto sin especificar aprovechando las diferencias en la gestión skb en hns_nic_net_xmit_hw y hns_nic_net_xmit. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=27463ad99f738ed93c7c8b3e2e5bc8c4853a2ff2 http://www.securityfocus.com/bid/103277 https://github.com/torvalds/linux/commit/27463ad99f738ed93c7c8b3e2e5bc8c4853a2ff2 https://www.debian.org/security/2018/dsa-4188 • CWE-416: Use After Free •