CVSS: 7.5EPSS: 4%CPEs: 1EXPL: 0CVE-2017-6214 – kernel: ipv4/tcp: Infinite loop in tcp_splice_read()
https://notcve.org/view.php?id=CVE-2017-6214
The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag. La función tcp_splice_read en net/ipv4/tcp.c en el kernel de Linux en versiones anteriores a 4.9.11 permite a atacantes remotos provocar una denegación de servicio (bucle infinito y bloqueo débil) a través de vectores que involucran un paquete TCP con la bandera URG. A flaw was found in the Linux kernel's handling of packets with the URG flag. Applications using the splice() and tcp_splice_read() functionality could allow a remote attacker to force the kernel to enter a condition in which it could loop indefinitely. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccf7abb93af09ad0868ae9033d1ca8108bdaec82 http://www.debian.org/security/2017/dsa-3804 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11 http://www.securityfocus.com/bid/96421 http://www.securitytracker.com/id/1037897 https://access.redhat.com/errata/RHSA-2017:1372 https://access.redhat.com/errata/RHSA-2017:1615 https://access.redhat.com/errata/RHSA-2017:1616 https://access.redhat.com/errata& • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 4CVE-2017-6074 – Linux Kernel 4.4.0 (Ubuntu) - DCCP Double-Free (PoC)
https://notcve.org/view.php?id=CVE-2017-6074
The dccp_rcv_state_process function in net/dccp/input.c in the Linux kernel through 4.9.11 mishandles DCCP_PKT_REQUEST packet data structures in the LISTEN state, which allows local users to obtain root privileges or cause a denial of service (double free) via an application that makes an IPV6_RECVPKTINFO setsockopt system call. La función dccp_rcv_state_process en net/dccp/input.c en el kernel de Linux hasta la versión 4.9.11 no maneja adecuadamente estructuras de paquetes de datos DCCP_PKT_REQUEST en el estado LISTEN, lo que permite a usuarios locales obtener privilegios root o provocar una denegación de servicio (liberación doble) a través de una aplicación que hace una llamada de sistema IPV6_RECVPKTINFO setsockopt. A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system. • https://www.exploit-db.com/exploits/41457 https://www.exploit-db.com/exploits/41458 https://github.com/toanthang1842002/CVE-2017-6074 https://github.com/BimsaraMalinda/Linux-Kernel-4.4.0-Ubuntu---DCCP-Double-Free-Privilege-Escalation-CVE-2017-6074 http://rhn.redhat.com/errata/RHSA-2017-0293.html http://rhn.redhat.com/errata/RHSA-2017-0294.html http://rhn.redhat.com/errata/RHSA-2017-0295.html http://rhn.redhat.com/errata/RHSA-2017-0316.html http://rhn.redhat.com/err • CWE-415: Double Free CWE-416: Use After Free •
CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 0CVE-2017-5986 – kernel: Reachable BUG_ON from userspace in sctp_wait_for_sndbuf
https://notcve.org/view.php?id=CVE-2017-5986
Race condition in the sctp_wait_for_sndbuf function in net/sctp/socket.c in the Linux kernel before 4.9.11 allows local users to cause a denial of service (assertion failure and panic) via a multithreaded application that peels off an association in a certain buffer-full state. Condición de carrera en la función sctp_wait_for_sndbuf en net/sctp/socket.c en el kernel de Linux en versiones anteriores a 4.9.11 permite a usuarios locales provocar una denegación de servicio (fallo de aserción y pánico) a través de una aplicación multihilo que despega una asociación en un cierto estado de búfer completo. It was reported that with Linux kernel, earlier than version v4.10-rc8, an application may trigger a BUG_ON in sctp_wait_for_sndbuf if the socket tx buffer is full, a thread is waiting on it to queue more data, and meanwhile another thread peels off the association being used by the first thread. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2dcab598484185dea7ec22219c76dcdd59e3cb90 http://www.debian.org/security/2017/dsa-3804 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11 http://www.openwall.com/lists/oss-security/2017/02/14/6 http://www.securityfocus.com/bid/96222 https://access.redhat.com/errata/RHSA-2017:1308 https://bugzilla.redhat.com/show_bug.cgi?id=1420276 https://github.com/torvalds/linux/commit/2dcab598484185dea7ec22219c76 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-617: Reachable Assertion •
CVSS: 4.0EPSS: 0%CPEs: 1EXPL: 0CVE-2017-5967
https://notcve.org/view.php?id=CVE-2017-5967
The time subsystem in the Linux kernel through 4.9.9, when CONFIG_TIMER_STATS is enabled, allows local users to discover real PID values (as distinguished from PID values inside a PID namespace) by reading the /proc/timer_list file, related to the print_timer function in kernel/time/timer_list.c and the __timer_stats_timer_set_start_info function in kernel/time/timer.c. El subsistema de tiempo en el kernel de Linux hasta la versión 4.9.9, cuando CONFIG_TIMER_STATS está habilitado, permite a usuarios locales descubrir valores PID reales (diferenciados de valores PID dentro de un namespace PID) leyendo el archivo /proc/timer_list, relacionado con la función print_timer en kernel/time/timer_list.c y la función __timer_stats_timer_set_start_info en kernel/time/timer.c. • http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=dfb4357da6ddbdf57d583ba64361c9d792b0e0b1 http://www.securityfocus.com/bid/96271 https://bugzilla.kernel.org/show_bug.cgi?id=193921 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.5EPSS: 1%CPEs: 1EXPL: 0CVE-2017-5970 – kernel: ipv4: Invalid IP options could cause skb->dst drop
https://notcve.org/view.php?id=CVE-2017-5970
The ipv4_pktinfo_prepare function in net/ipv4/ip_sockglue.c in the Linux kernel through 4.9.9 allows attackers to cause a denial of service (system crash) via (1) an application that makes crafted system calls or possibly (2) IPv4 traffic with invalid IP options. La función ipv4_pktinfo_prepare en net/ipv4/ip_sockglue.c en el kernel de Linux hasta la versión 4.9.9 permite a atacantes provocar una denegación de servicio (caída de sistema) a través de (1) una aplicación que hace llamadas de sistema manipuladas o posiblemente (2) tráfico IPv4 con opciones IP inválidas. A vulnerability was found in the Linux kernel where having malicious IP options present would cause the ipv4_pktinfo_prepare() function to drop/free the dst. This could result in a system crash or possible privilege escalation. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b2cef20f19c87999fff3da4071e66937db9644 http://www.debian.org/security/2017/dsa-3791 http://www.openwall.com/lists/oss-security/2017/02/12/3 http://www.securityfocus.com/bid/96233 https://access.redhat.com/errata/RHSA-2017:1842 https://access.redhat.com/errata/RHSA-2017:2077 https://access.redhat.com/errata/RHSA-2017:2669 https://bugzilla.redhat.com/show_bug.cgi?id=1421638 https://github.com/torvalds& • CWE-476: NULL Pointer Dereference •