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Kernel Files

Red Hat Security Advisory 2018-3822-01
Posted Dec 13, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3822-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-11176, CVE-2017-15265, CVE-2017-8824
MD5 | c301b49a9797cdedb4d138d919f36628
Red Hat Security Advisory 2018-3823-01
Posted Dec 13, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3823-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-15265
MD5 | ba98eb254b3c0ff4e90c59c44d9cee5c
Ubuntu Security Notice USN-3836-2
Posted Dec 6, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3836-2 - USN-3836-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. Jann Horn discovered that the Linux kernel mishandles mapping UID or GID ranges inside nested user namespaces in some situations. A local attacker could use this to bypass access controls on resources outside the namespace. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-18955, CVE-2018-6559
MD5 | 40f74c61b11b342e43d24c42da24a458
Ubuntu Security Notice USN-3836-1
Posted Dec 4, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3836-1 - Jann Horn discovered that the Linux kernel mishandles mapping UID or GID ranges inside nested user namespaces in some situations. A local attacker could use this to bypass access controls on resources outside the namespace. Philipp Wendler discovered that the overlayfs implementation in the Linux kernel did not properly verify the directory contents permissions from within a unprivileged user namespace. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-18955, CVE-2018-6559
MD5 | 158521f793a16089323ee0be9c6ad5ce
Ubuntu Security Notice USN-3835-1
Posted Dec 4, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3835-1 - Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to expose sensitive information. Jann Horn discovered that the mremap system call in the Linux kernel did not properly flush the TLB when completing, potentially leaving access to a physical page after it has been released to the page allocator. A local attacker could use this to cause a denial of service , expose sensitive information, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-17972, CVE-2018-18281, CVE-2018-18445, CVE-2018-18653, CVE-2018-18955, CVE-2018-6559
MD5 | 797f806913c130a0d4051adda370818d
Linux Kernel 4.8 (Ubuntu 16.04) sctp Kernel Pointer Leak
Posted Dec 1, 2018
Authored by Jinbum Park

Linux Kernel version 4.8 on Ubuntu 16.04 suffers from an sctp kernel pointer leak vulnerability.

tags | exploit, kernel
systems | linux, ubuntu
advisories | CVE-2017-7558
MD5 | fc9790b1e137cf5ee0cca7cf36225b56
Ubuntu Security Notice USN-3833-1
Posted Nov 30, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3833-1 - Jann Horn discovered that the Linux kernel mishandles mapping UID or GID ranges inside nested user namespaces in some situations. A local attacker could use this to bypass access controls on resources outside the namespace. Philipp Wendler discovered that the overlayfs implementation in the Linux kernel did not properly verify the directory contents permissions from within a unprivileged user namespace. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-18955, CVE-2018-6559
MD5 | 332359216d6a177a45f3a9adbd36aa4c
Ubuntu Security Notice USN-3832-1
Posted Nov 30, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3832-1 - Jann Horn discovered that the procfs file system implementation in the Linux kernel did not properly restrict the ability to inspect the kernel stack of an arbitrary task. A local attacker could use this to expose sensitive information. Jann Horn discovered that the mremap system call in the Linux kernel did not properly flush the TLB when completing, potentially leaving access to a physical page after it has been released to the page allocator. A local attacker could use this to cause a denial of service , expose sensitive information, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-17972, CVE-2018-18281, CVE-2018-18445, CVE-2018-18653, CVE-2018-18955, CVE-2018-6559
MD5 | e6fcaa3ecb5ddac3d3d7836f6838675e
Linux Nested User Namespace idmap Limit Local Privilege Escalation
Posted Nov 28, 2018
Authored by Brendan Coles, Jann Horn | Site metasploit.com

This Metasploit module exploits a vulnerability in Linux kernels 4.15.0 to 4.18.18, and 4.19.0 to 4.19.1, where broken uid/gid mappings between nested user namespaces and kernel uid/gid mappings allow elevation to root (CVE-2018-18955). The target system must have unprivileged user namespaces enabled and the newuidmap and newgidmap helpers installed (from uidmap package). This Metasploit module has been tested successfully on: Fedora Workstation 28 kernel 4.16.3-301.fc28.x86_64; Kubuntu 18.04 LTS kernel 4.15.0-20-generic (x86_64); Linux Mint 19 kernel 4.15.0-20-generic (x86_64); Ubuntu Linux 18.04.1 LTS kernel 4.15.0-20-generic (x86_64).

tags | exploit, kernel, root
systems | linux, fedora, ubuntu
advisories | CVE-2018-18955
MD5 | bcf9a7b1fda21bc456a3d65c534bf1af
Ubuntu Security Notice USN-3816-3
Posted Nov 28, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3816-3 - USN-3816-1 fixed vulnerabilities in systemd. The fix for CVE-2018-6954 caused a regression in systemd-tmpfiles when running Ubuntu inside a container on some older kernels. This issue only affected Ubuntu 16.04 LTS. In order to continue to support this configuration, the fixes for CVE-2018-6954 have been reverted. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-15686, CVE-2018-15687, CVE-2018-6954
MD5 | be578aeb1bec867e87d540b182304d00
Red Hat Security Advisory 2018-3666-01
Posted Nov 27, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3666-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include buffer overflow, denial of service, and null pointer vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2018-14633, CVE-2018-14646
MD5 | e2ca62529c03a74b642860ad9fede87e
Red Hat Security Advisory 2018-3651-01
Posted Nov 27, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3651-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, denial of service, and null pointer vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2018-14633, CVE-2018-14646
MD5 | 64b13d003c3622e75f9798ff85218583
Red Hat Security Advisory 2018-3656-01
Posted Nov 27, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3656-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include an use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2018-17182, CVE-2018-18021
MD5 | 513600c8ce4902b46138d1c8a60bbcce
Red Hat Security Advisory 2018-3643-01
Posted Nov 21, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3643-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an integer overflow vulnerability.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2018-14634
MD5 | 6d25a3162fa4900b38136d8459c91896
Microsoft Windows Unnamed Kernel Object Privilege Escalation
Posted Nov 20, 2018
Authored by James Forshaw, Google Security Research

Microsoft Windows 10 1803 and 1809 have an issue with unnamed kernel object creation. It's possible to default the security descriptor owner or mandatory label to the value from an Identification level impersonation token leading to elevation of privilege.

tags | exploit, kernel
systems | windows
MD5 | ef10a4d238e0690bde490f41457b96fe
Kernel Live Patch Security Notice LSN-0045-1
Posted Nov 16, 2018
Authored by Benjamin M. Romer

It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate privileges. Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux
advisories | CVE-2017-13168, CVE-2018-10880, CVE-2018-16658, CVE-2018-9363
MD5 | 87ee31d5637610e40009faa55f769c6d
Ubuntu Security Notice USN-3822-2
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3822-2 - USN-3822-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Jim Mattson discovered that the KVM implementation in the Linux kernel mismanages the #BP and #OF exceptions. A local attacker in a guest virtual machine could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-9588, CVE-2017-13168, CVE-2017-16649, CVE-2018-16658, CVE-2018-9363
MD5 | 38d2319298757b9ae2fa55baae267955
Ubuntu Security Notice USN-3822-1
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3822-1 - Jim Mattson discovered that the KVM implementation in the Linux kernel mismanages the #BP and #OF exceptions. A local attacker in a guest virtual machine could use this to cause a denial of service. It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate privileges. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-9588, CVE-2017-13168, CVE-2017-16649, CVE-2018-16658, CVE-2018-9363
MD5 | 07f71bea3d47114cf186b3745cee0c23
Ubuntu Security Notice USN-3821-2
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3821-2 - USN-3821-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-10880, CVE-2018-13053, CVE-2018-13096, CVE-2018-14609, CVE-2018-14617, CVE-2018-17972, CVE-2018-18021
MD5 | aec00b068e6349d4d19761befac301e0
Ubuntu Security Notice USN-3821-1
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3821-1 - Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly ensure that xattr information remained in inode bodies. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service. It was discovered that the alarmtimer implementation in the Linux kernel contained an integer overflow vulnerability. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-10880, CVE-2018-13053, CVE-2018-13096, CVE-2018-14609, CVE-2018-14617, CVE-2018-17972, CVE-2018-18021
MD5 | a90659bad625eafc560423ef26975554
Ubuntu Security Notice USN-3820-3
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3820-3 - Felix Wilhelm discovered that the Xen netback driver in the Linux kernel did not properly perform input validation in some situations. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-13168, CVE-2018-15471, CVE-2018-16658, CVE-2018-9363
MD5 | 740182e23aa6554edf5fee4302b78e30
Ubuntu Security Notice USN-3820-2
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3820-2 - USN-3820-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. Felix Wilhelm discovered that the Xen netback driver in the Linux kernel did not properly perform input validation in some situations. An attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-13168, CVE-2018-15471, CVE-2018-16658, CVE-2018-9363
MD5 | 8b0e9c9bf7278654251d2e196f833532
Ubuntu Security Notice USN-3820-1
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3820-1 - Felix Wilhelm discovered that the Xen netback driver in the Linux kernel did not properly perform input validation in some situations. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-13168, CVE-2018-15471, CVE-2018-16658, CVE-2018-9363
MD5 | b0fc3d0f53413d388b30ff0693802f54
Ubuntu Security Notice USN-3819-1
Posted Nov 15, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3819-1 - Felix Wilhelm discovered that the Xen netback driver in the Linux kernel did not properly perform input validation in some situations. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2018-15471
MD5 | 9a651a32e15aec8e6040b8468637e00d
Red Hat Security Advisory 2018-3591-01
Posted Nov 14, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3591-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an integer overflow vulnerability.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2017-18344, CVE-2018-14634
MD5 | 4cf33ed3b32c329de89d3cc482fad8e0
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