CVE-2018-19965

Technical details about CVE-2018-19965 (Xen) are not provided in the connected documents. The initial description lacks vendor/product/version/root-cause/fix specifics. Monitor for updates from Xen advisories.

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

Ubuntu: Security Advisory (USN-3832-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Ubuntu 18.10 : Linux kernel (AWS) vulnerabilities (USN-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. CVE-2018-17972 Jann Horn discovered that the mremap system...

insufficient TLB flushing / improper large page mappings with AMD IOMMUs

ISSUE DESCRIPTION In order to be certain that no undue access to memory is possible anymore after IOMMU mappings of this memory have been removed, Translation Lookaside Buffers TLBs need to be flushed after most changes to such mappings. Xen bypassed certain IOMMU flushes on AMD x86 hardware...

Citrix XenServer Security Update

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that have deployment-dependent impacts. These issues affect the following supported versions of Citrix XenServer: Citrix XenServer 7.6 Citrix XenServer 7.5 Citrix XenServer 7.1 LTSR CU1 Citrix...

SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:3689-1)

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.162 to receive various security and bugfixes. The following security bugs were fixed : CVE-2018-14633: A security flaw was found in the chapservercomputemd5 function in the ISCSI target code in a way an authentication request from an ISCS...

SUSE-SU-2018:3688-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.162 to receive various security and bugfixes. The following security bugs were fixed: - CVE-2018-14633: A security flaw was found in the chapservercomputemd5 function in the ISCSI target code in a way an authentication request from an ISC...

CVE-2018-18281

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

DEBIAN-CVE-2018-18281

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

Design/Logic Flaw

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

CVE-2018-18281

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

CVE-2018-18281

CVE-2018-18281 is a Linux kernel local vulnerability due to a race in mremap() where TLB flushes can occur too late, potentially allowing a process to access memory after it has been freed. The issue stems from moving page tables during mremap(), where stale TLB entries may remain until after the...

CVE-2018-18281

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

UBUNTU-CVE-2018-18281

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

CVE-2018-18281

Since Linux kernel version 3.2, the mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the pagetables of a task that is in the middle of mremap, a stale TLB entry can remain for a short time that permits access to a physical pag...

Linux mremap() TLB Flush Too Late

Linux: mremap TLB flush too late with concurrent ftruncate CVE-2018-18281 Tested on the master branch 4.19.0-rc7+. sysmremap takes current-mm-mmapsem for writing, then calls mremapto-movevma-movepagetables. movepagetables first calls moveptes which takes PTE locks, moves PTEs, and drops PTE locks...

Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.78 and fixes at least the following security issues: An issue was discovered in the fdlockedioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the...

Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.14.78 and adds additional fixes for the L1TF security issues. It also fixes at least the following security issues: Linux kernel from versions 3.9 and up, is vulnerable to a denial of service attack with low rates of specially modified packets...