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: 2%CPEs: 12EXPL: 0CVE-2019-8980 – kernel: memory leak in the kernel_read_file function in fs/exec.c allows to cause a denial of service
https://notcve.org/view.php?id=CVE-2019-8980
A memory leak in the kernel_read_file function in fs/exec.c in the Linux kernel through 4.20.11 allows attackers to cause a denial of service (memory consumption) by triggering vfs_read failures. Una fuga de memoria en la función kernel_read_file en fs/exec.c en el kernel de Linux, hasta la versión 4.20.11, permite que los atacantes provoquen una denegación de servicio (consumo de memoria) desencadenando errores en vfs_read. A kernel memory leak was found in the kernel_read_file() function in the fs/exec.c file in the Linux kernel. An attacker could use this flaw to cause a memory leak and thus a denial of service (DoS). • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html http://www.securityfocus.com/bid/107120 https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html https://support.f5.com/csp/article/K56480726 https://usn.ubuntu.com/3930-1 https://usn.ubuntu.com/3930-2 https://usn.ubuntu.com/3931-1 https://usn.ubuntu.com/3931-2 https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1935698.html https://www.mail-archive.com/linux-kernel%40vg • CWE-400: Uncontrolled Resource Consumption CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.8EPSS: 0%CPEs: 17EXPL: 0CVE-2019-8912 – kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr
https://notcve.org/view.php?id=CVE-2019-8912
In the Linux kernel through 4.20.11, af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr. En el kernel de Linux, hasta la versión 4.20.11, af_alg_release() en crypto/af_alg.c no establece un valor NULL para cierto miembro de estructura, lo que conduce a un uso de memoria previamente liberada en sockfs_setattr. In the Linux kernel af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free (UAF) in sockfs_setattr. A local attacker can use this flaw to escalate privileges and take control of the system. • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html http://patchwork.ozlabs.org/patch/1042902 http://www.securityfocus.com/bid/107063 https://access.redhat.com/errata/RHSA-2020:0174 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-8912 https://usn.ubuntu.com/3930-1 https://usn.ubuntu.com/3930-2 https://usn.ubuntu.com/3931-1 https://usn.ubuntu.com/3931-2 https://access.redhat.com/security/cve/CVE-2019-8912 https://bugzilla.redhat.c • CWE-416: Use After Free •
CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 1CVE-2019-7221 – Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer
https://notcve.org/view.php?id=CVE-2019-7221
The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free. La implementación KVM en el kernel de Linux, hasta la versión 4.20.5, tiene un uso de memoria previamente liberada. A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor emulates a preemption timer for L2 guests when nested (=1) virtualization is enabled. This high resolution timer(hrtimer) runs when a L2 guest is active. After VM exit, the sync_vmcs12() timer object is stopped. • http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html http://packetstormsecurity.com/files/151713/KVM-VMX-Preemption-Timer-Use-After-Free.html http://www.openwall.com/lists/oss-security/2019/02/18/2 https://access.redhat.com/errata/RHBA-2019:0959 https://access.redhat.com/errata/RHSA-2019:0818 https://access.redhat.com/errata/RHSA-2019:0833 https://access.redhat.com/errata/RHSA-2019:3967 https://access.redhat.com/errata/RHSA-2019:4058 https://bugs.chromiu • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 35EXPL: 1CVE-2019-7222 – Kernel: KVM: leak of uninitialized stack contents to guest
https://notcve.org/view.php?id=CVE-2019-7222
The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak. La implementación KVM en el kernel de Linux, hasta la versión 4.20.5, tiene una fuga de información. An information leakage issue was found in the way Linux kernel's KVM hypervisor handled page fault exceptions while emulating instructions like VMXON, VMCLEAR, VMPTRLD, and VMWRITE with memory address as an operand. It occurs if the operand is a mmio address, as the returned exception object holds uninitialized stack memory contents. A guest user/process could use this flaw to leak host's stack memory contents to a guest. • http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html http://packetstormsecurity.com/files/151712/KVM-kvm_inject_page_fault-Uninitialized-Memory-Leak.html http://www.openwall.com/lists/oss-security/2019/02/18/2 http://www.securityfocus.com/bid/106963 https://access.redhat.com/errata/RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2043 https://access.redhat.com/errata/RHSA-2019:3309 https://access.redhat.com/errata/RHSA-2019:3517 https://bugs.chromiu • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •