CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2019-9857
https://notcve.org/view.php?id=CVE-2019-9857
In the Linux kernel through 5.0.2, the function inotify_update_existing_watch() in fs/notify/inotify/inotify_user.c neglects to call fsnotify_put_mark() with IN_MASK_CREATE after fsnotify_find_mark(), which will cause a memory leak (aka refcount leak). Finally, this will cause a denial of service. En el kernel de Linux hasta la versión 5.0.2, la función inotify_update_existing_watch() en fs/notify/inotify/inotify_user.c no llama a fsnotify_put_mark() con IN_MASK_CREATE tras fsnotify_find_mark(), lo que provocará una fuga de memoria, también conocida como filtrado de refcount. Finalmente, esto provocará una denegación de servicio. • http://www.securityfocus.com/bid/107527 https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git/commit/?h=fsnotify&id=62c9d2674b31d4c8a674bee86b7edc6da2803aea https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXLZ2V2ES37A3J7DMK4MZYIWV2LEZFLM https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PPH3B7FJOMWD5JWUPZKB6T44KNT4PX2L https://patchwork.kernel.org/patch/10836283 https://security.netapp.com/advisory/ntap-20190404-0002 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 5.5EPSS: 0%CPEs: 13EXPL: 4CVE-2019-9213 – Linux < 4.20.14 - Virtual Address 0 is Mappable via Privileged write() to /proc/*/mem
https://notcve.org/view.php?id=CVE-2019-9213
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task. En el kernel de Linux, en versiones anteriores a la 4.20.14, expand_downwards en mm/mmap.c carece de una comprobación para la dirección mínima de mmap, lo que facilita que los atacantes exploten desreferencias de puntero NULL en el kernel en plataformas que no son SMAP. Esto esto está relacionado con una comprobación de capacidades para la tarea equivocada. A flaw was found in mmap in the Linux kernel allowing the process to map a null page. • https://www.exploit-db.com/exploits/46502 https://www.exploit-db.com/exploits/47957 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1 http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html http://www.securityfocus.com/bid/107296 https&# • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 2CVE-2019-9162 – Linux < 4.14.103 / < 4.19.25 - Out-of-Bounds Read and Write in SNMP NAT Module
https://notcve.org/view.php?id=CVE-2019-9162
In the Linux kernel before 4.20.12, net/ipv4/netfilter/nf_nat_snmp_basic_main.c in the SNMP NAT module has insufficient ASN.1 length checks (aka an array index error), making out-of-bounds read and write operations possible, leading to an OOPS or local privilege escalation. This affects snmp_version and snmp_helper. En el kernel de Linux, en versiones anteriores a la 4.20.12, net/ipv4/netfilter/nf_nat_snmp_basic_main.c en el módulo SNMP NAT tiene comprobaciones de longitud ASN.1 insuficientes (conocido como error de índice de arrays), lo que hace que las operaciones de lectura y escritura fuera de límites sean posibles y conduciendo a un OOPS o al escalado de privilegios locales. Esto afecta a snmp_version y snmp_helper. • https://www.exploit-db.com/exploits/46477 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c4c07b4d6fa1f11880eab8e076d3d060ef3f55fc http://www.securityfocus.com/bid/107159 https://bugs.chromium.org/p/project-zero/issues/detail?id=1776 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.25 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.12 https://github.com/torvalds/linux/commit/c4c07b4d6fa1f11880eab8e076d3d060ef3f55fc https://security.netapp • CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 1%CPEs: 9EXPL: 0CVE-2018-20784 – kernel: infinite loop in update_blocked_averages() in kernel/sched/fair.c leading to denial of service
https://notcve.org/view.php?id=CVE-2018-20784
In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load. En el kernel de Linux, en versiones anteriores a la 4.20.2, kernel/sched/fair.c gestiona leaf cfs_rq de manera incorrecta, lo que permite que los atacantes provoquen una denegación de servicio (bucle infinito en update_blocked_averages) o, posiblemente, otro impacto sin especificar induciendo una carga alta. The CFS Linux kernel scheduler mishandles handling of leaf cfs_rq's in the kernel/sched/fair.c code, which allows a local unprivileged attacker to cause a denial of service (DoS) by entering an infinite loop in update_blocked_averages() function by inducing a high load on a system. Due to the nature of the flaw, a remote network attack (by initiating a magnitude of remote requests) cannot be fully ruled out. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0 https://access.redhat.com/errata/RHSA-2019:1959 https://access.redhat.com/errata/RHSA-2019:1971 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2 https://github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0 https://usn.ubuntu.com/4115-1 https://usn.ubuntu.com/4118-1 https://usn.ubuntu.com/4211-1 https://usn.ubuntu.com/4211-2 https: • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.8EPSS: 1%CPEs: 14EXPL: 0CVE-2019-9003 – kernel: use-after-free and OOPS in drivers/char/ipmi/ipmi_msghandler.c
https://notcve.org/view.php?id=CVE-2019-9003
In the Linux kernel before 4.20.5, attackers can trigger a drivers/char/ipmi/ipmi_msghandler.c use-after-free and OOPS by arranging for certain simultaneous execution of the code, as demonstrated by a "service ipmievd restart" loop. En el kernel de Linux, en versiones anteriores a la 4.20.5, los atacantes pueden desencadenar un uso de memoria previamente liberada y un estado "OOPS" en drivers/char/ipmi/ipmi_msghandler.c haciendo que cierto código se ejecute de forma simultánea, tal y como queda demostrado con un bucle "service ipmievd restart". A use-after-free and OOPs flaw was found in the Linux kernel's drivers/char/ipmi/ipmi_msghandler.c code. By arranging certain simultaneous execution of the code accessing IPMI device files, an attacker can cause a denial of service (DoS) attack. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=77f8269606bf95fcb232ee86f6da80886f1dfae8 http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00037.html http://www.securityfocus.com/bid/107145 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.5 https://github.com/torvalds/linux/commit/77f8269606bf95fcb232ee86f6da80886f1dfae8 https://security.netapp.com/advisory/ntap-20190327-0002 https://usn.ubuntu.com/3930-1 https://usn.ubuntu.com/3930-2 https:/ • CWE-416: Use After Free •