CVSS: 7.4EPSS: 0%CPEs: 3EXPL: 0CVE-2016-2069 – kernel: race condition in the TLB flush logic
https://notcve.org/view.php?id=CVE-2016-2069
Race condition in arch/x86/mm/tlb.c in the Linux kernel before 4.4.1 allows local users to gain privileges by triggering access to a paging structure by a different CPU. Condición de carrera en arch/x86/mm/tlb.c en el kernel de Linux en versiones anteriores a 4.4.1 permite a usuarios locales obtener privilegios desencadenando el acceso a una estructura de paginación por un CPU diferente. A flaw was discovered in the way the Linux kernel dealt with paging structures. When the kernel invalidated a paging structure that was not in use locally, it could, in principle, race against another CPU that is switching to a process that uses the paging structure in question. A local user could use a thread running with a stale cached virtual->physical translation to potentially escalate their privileges if the translation in question were writable and the physical page got reused for something critical (for example, a page table). • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71b3c126e61177eb693423f2e18a1914205b165e http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html http://rhn.redhat.com/errata/RHSA-2016-2574.html http://rhn.redhat.com/errata/RHSA-2016-258 • CWE-266: Incorrect Privilege Assignment CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 2CVE-2016-1575 – Ubuntu 14.04/15.10 - User Namespace Overlayfs Xattr SetGID Privilege Escalation
https://notcve.org/view.php?id=CVE-2016-1575
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory. La implementación de overlayfs en el kernel de Linux hasta la versión 4.5.2 no mantiene correctamente datos POSIX ACL xattr, lo que permite a usuarios locales obtener privilegos aprovechando un directorio con permiso de escritura de grupo setgid. • https://www.exploit-db.com/exploits/41762 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360 http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation http://www.openwall.com/lists/oss-security/2016/02/24/7 http://www.openwall.com/lists/oss-security/2021/10/18/1 https://launchpad.net/bugs/1534961 • CWE-269: Improper Privilege Management •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 2CVE-2016-1576 – Ubuntu 15.10 - 'USERNS ' Overlayfs Over Fuse Privilege Escalation
https://notcve.org/view.php?id=CVE-2016-1576
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program. La implementación de overlayfs en el kernel de Linux hasta la versión 4.5.2 no restringe correctamente el espacio de nombres de montaje, lo que permite a usuarios locales obtener privilegos montando un sistema de archivos overlayfs sobre un sistema de archivos FUSE y luego ejecutando un programa setuid manipulado. • https://www.exploit-db.com/exploits/41763 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360 http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.html http://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation http://www.openwall.com/lists/oss-security/2016/02/24/8 http://www.openwall.com/lists/oss-security/2021/10/18/1 https://bugs.launchpad.net/bugs/1535150 https://launchpadlibrarian.net/23530009 •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2015-8539 – kernel: local privesc in key management
https://notcve.org/view.php?id=CVE-2015-8539
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c. El subsistema KEYS en el kernel de Linux en versiones anteriores a 4.4 permite a usuarios locales obtener privilegios o provocar una denegación de servicio (BUG) a través de comandos keyctl manipulados que instancia una clave negativamente, relacionado con security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c y security/keys/user_defined.c. A flaw was found in the Linux kernel's key management system where it was possible for an attacker to escalate privileges or crash the machine. If a user key gets negatively instantiated, an error code is cached in the payload area. A negatively instantiated key may be then be positively instantiated by updating it with valid data. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html http://lists.opensuse.org • CWE-269: Improper Privilege Management CWE-667: Improper Locking •
CVSS: 10.0EPSS: 4%CPEs: 2EXPL: 0CVE-2015-8787
https://notcve.org/view.php?id=CVE-2015-8787
The nf_nat_redirect_ipv4 function in net/netfilter/nf_nat_redirect.c in the Linux kernel before 4.4 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by sending certain IPv4 packets to an incompletely configured interface, a related issue to CVE-2003-1604. La función nf_nat_redirect_ipv4 en net/netfilter/nf_nat_redirect.c en el kernel de Linux en versiones anteriores a 4.4 permite a atacantes remotos provocar una denegación de servicio (referencia a puntero NULL y caída del sistema) o posiblemente tener otro impacto no especificado enviando ciertos paquetes IPv4 a una interfaz configurada incompletamente, un caso relacionado con CVE-2003-1604. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=94f9cd81436c85d8c3a318ba92e236ede73752fc http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176464.html http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html http://www.openwall.com/lists/oss-security/2016/01/27/6 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle&# • CWE-476: NULL Pointer Dereference •