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: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-18216
https://notcve.org/view.php?id=CVE-2017-18216
In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of service (NULL pointer dereference and BUG) because a required mutex is not used. En fs/ocfs2/cluster/nodemanager.c en el kernel de Linux, en versiones anteriores a la 4.15, los usuarios locales pueden provocar una denegación de servicio (desreferencia de puntero NULL y error) debido a que no se emplea un mutex requerido. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=853bc26a7ea39e354b9f8889ae7ad1492ffa28d2 http://www.securityfocus.com/bid/103278 https://github.com/torvalds/linux/commit/853bc26a7ea39e354b9f8889ae7ad1492ffa28d2 https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html https://usn.ubuntu.com/3776-1 https://usn.ubuntu.com/3776-2 https://usn.ubuntu.com/3798-1 https://usn.ubuntu.com/3798-2 https://www.debian.org/security/2018/dsa-4187 https://www.d • CWE-476: NULL Pointer Dereference •
CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0CVE-2018-1065 – kernel: netfilter: xtables NULL pointer dereference in ip6_tables.c:ip6t_do_table() leading to a crash
https://notcve.org/view.php?id=CVE-2018-1065
The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c. El subsistema netfilter en el kernel de Linux, hasta la versión 4.15.7, gestiona de manera incorrecta el caso de una regla blob que contiene un salto pero carece de una cadena definida por el usuario. Esto permite que usuarios locales provoquen una denegación de servicio (DoS) aprovechando las capacidades CAP_NET_RAW o CAP_NET_ADMIN, relacionadas con arpt_do_table en net/ipv4/netfilter/arp_tables.c, ipt_do_table en net/ipv4/netfilter/ip_tables.c y ip6t_do_table en net/ipv6/netfilter/ip6_tables.c. A flaw was found in the netfilter/iptables subsystem. A user with the netfilter modification capabilities could insert a rule which could panic the system. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 http://lists.openwall.net/netdev/2018/01/27/46 http://patchwork.ozlabs.org/patch/870355 http://www.securitytracker.com/id/1040446 https://access.redhat.com/errata/RHSA-2018:2948 https://bugzilla.redhat.com/show_bug.cgi?id=1547824 https://github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 https://usn.ubuntu.com/3654-1 https://usn.ubuntu.com/3654-2 https: • CWE-476: NULL Pointer Dereference •