CVE-2015-8845 – kernel: incorrect restoration of machine specific registers from userspace
https://notcve.org/view.php?id=CVE-2015-8845
The tm_reclaim_thread function in arch/powerpc/kernel/process.c in the Linux kernel before 4.4.1 on powerpc platforms does not ensure that TM suspend mode exists before proceeding with a tm_reclaim call, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application. La función tm_reclaim_thread en arch/powerpc/kernel/process.c en el Kernel de Linux en versiones anteriores a 4.4.1 sobre plataformas powerpc no asegura que exista el modo TM suspend antes de proceder con una llamada tm_reclaim, lo que permite a usuarios locales provocar una denegación de servicio (excepción TM Bad Thing y pánico) a través de una aplicación manipulada. A flaw was found in the Linux kernel which could cause a kernel panic when restoring machine specific registers on the PowerPC platform. Incorrect transactional memory state registers could inadvertently change the call path on return from userspace and cause the kernel to enter an unknown state and crash. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7f821fc9c77a9b01fe7b1d6e72717b33d8d64142 http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html http://rhn.redhat.com/errata/RHSA-2016-2574.html http://rhn.redhat.com/errata/RHSA-2016-258 • CWE-284: Improper Access Control CWE-772: Missing Release of Resource after Effective Lifetime •
CVE-2016-3672 – Linux Kernel (x86) - Disable ASLR by Setting the RLIMIT_STACK Resource to Unlimited
https://notcve.org/view.php?id=CVE-2016-3672
The arch_pick_mmap_layout function in arch/x86/mm/mmap.c in the Linux kernel through 4.5.2 does not properly randomize the legacy base address, which makes it easier for local users to defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag, and bypass the ASLR protection mechanism for a setuid or setgid program, by disabling stack-consumption resource limits. La función arch_pick_mmap_layout en arch/x86/mm/mmap.c en el kernel de Linux hasta la versión 4.5.2 no maneja de forma aleatoria el legado de la dirección base, lo que hace más fácil a usuarios locales romper las restricciones destinadas en los indicadores ADDR_NO_RANDOMIZE, y eludir el mecanismo de protección ASLR para programas setuid o setid, deshabilitando los límites de recursos del consumo de pila. A weakness was found in the Linux ASLR implementation. Any user able to running 32-bit applications in a x86 machine can disable ASLR by setting the RLIMIT_STACK resource to unlimited. • https://www.exploit-db.com/exploits/39669 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b8addf891de8a00e4d39fc32f93f7c5eb8feceb http://hmarco.org/bugs/CVE-2016-3672-Unlimiting-the-stack-not-longer-dis http://hmarco.org/bugs/CVE-2016-3672-Unlimiting-the-stack-not-longer-disables-ASLR.html http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182524.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html http://lists.opensuse.org/open • CWE-254: 7PK - Security Features CWE-341: Predictable from Observable State •
CVE-2016-2847 – kernel: pipe: limit the per-user amount of pages allocated in pipes
https://notcve.org/view.php?id=CVE-2016-2847
fs/pipe.c in the Linux kernel before 4.5 does not limit the amount of unread data in pipes, which allows local users to cause a denial of service (memory consumption) by creating many pipes with non-default sizes. fs/pipe.c en el kernel de Linux antes de 4.5 no limita la cantidad de datos no leídos en las tuberías, lo que permite a los usuarios locales provocar una denegación de servicio (consumo de memoria) creando muchas tuberías con tamaños no predeterminados. It is possible for a single process to cause an OOM condition by filling large pipes with data that are never read. A typical process filling 4096 pipes with 1 MB of data will use 4 GB of memory and there can be multiple such processes, up to a per-user-limit. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=759c01142a5d0f364a462346168a56de28a80f52 http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html http://lists.opensuse.org • CWE-399: Resource Management Errors CWE-400: Uncontrolled Resource Consumption •
CVE-2016-2315 – git: path_name() integer truncation and overflow leading to buffer overflow
https://notcve.org/view.php?id=CVE-2016-2315
revision.c in git before 2.7.4 uses an incorrect integer data type, which allows remote attackers to execute arbitrary code via a (1) long filename or (2) many nested trees, leading to a heap-based buffer overflow. revision.c en git en versiones anteriores a 2.7.4 utiliza un tipo de datos de entero incorrecto, lo que permite a atacantes remotos ejecutar código arbitrario a través de un (1) nombre de archivo grande o (2) muchos árboles anidados, dando lugar a un desbordamiento de buffer basado en memoria dinámica. An integer truncation flaw and an integer overflow flaw, both leading to a heap-based buffer overflow, were found in the way Git processed certain path information. A remote attacker could create a specially crafted Git repository that would cause a Git client or server to crash or, possibly, execute arbitrary code. • http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183147.html http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179121.html http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180763.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00059.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00061.html http://lists.opensuse.org/opensuse-security-announce • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-194: Unexpected Sign Extension •
CVE-2016-2324 – git: path_name() integer truncation and overflow leading to buffer overflow
https://notcve.org/view.php?id=CVE-2016-2324
Integer overflow in Git before 2.7.4 allows remote attackers to execute arbitrary code via a (1) long filename or (2) many nested trees, which triggers a heap-based buffer overflow. Desboradmiento de entero en Git en versiones anteriores a 2.7.4 permite a atacantes remotos ejecutar código arbitrario a través de un (1) nombre de archivo grande o (2) muchos árboles anidados, lo que desencadena un desbordamiento de buffer basado en memoria dinámica. An integer truncation flaw and an integer overflow flaw, both leading to a heap-based buffer overflow, were found in the way Git processed certain path information. A remote attacker could create a specially crafted Git repository that would cause a Git client or server to crash or, possibly, execute arbitrary code. • http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183147.html http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179121.html http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180763.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00059.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00061.html http://lists.opensuse.org/opensuse-security-announce • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-194: Unexpected Sign Extension •