UBUNTU-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-CVE-2018-19965

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service host OS crash because GP0 can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 aka Meltdown mitigation...

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...

kernel: Use-after-free in the vmacache_flush_all function resulting in a possible privilege escalation

A security flaw was discovered in the Linux kernel. The vmacacheflushall function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free and possibly gain privileges via certain thread creation, map, unmap, invalidation, and dereference operations...

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...

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...

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...

DEBIAN-CVE-2018-17182

An issue was discovered in the Linux kernel through 4.18.8. The vmacacheflushall function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free and possibly gain privileges via certain thread creation, map, unmap, invalidation, and dereference operations...

UBUNTU-CVE-2018-17182

An issue was discovered in the Linux kernel through 4.18.8. The vmacacheflushall function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free and possibly gain privileges via certain thread creation, map, unmap, invalidation, and dereference operations...

CVE-2018-14642

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests...

PT-2018-1587 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.18.9 Description: An issue in the Linux kernel allows an attacker to trigger a use-after-free via certain thread creation, map, unmap, invalidation, and dereference operations, potentially gaining privileges...

CVE-2018-3646

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis...

Security Bulletin: OpenSSL vulnerability in current release of the IBM® SDK for Node.js™

Summary OpenSSL ECDSA FLUSH+RELOAD cache side-channel attack Vulnerability Details CVE ID: CVE-2014-0076 DESCRIPTION: OpenSSL could allow a local attacker to obtain sensitive information, caused by an implementation error in ECDSA Elliptic Curve Digital Signature Algorithm. An attacker could...

kernel security and bug fix update

2.6.32-754.OL6 - Update genkey bug 25599697 2.6.32-754 - powerpc 64s: Add support for a store forwarding barrier at kernel entry/exit Mauricio Oliveira 1581053 CVE-2018-3639 - x86 amd: Disable AMD SSBD mitigation in a VM Waiman Long 1580360 - x86 specctrl: Fix late microcode problem with AMD Waim...

Security Bulletin: IBM Security Proventia Network Active Bypass is affected by vulnerabilities in OpenSSL (CVE-2014-0160 and CVE-2014-0076)

Summary Security vulnerabilities have been discovered in OpenSSL. Vulnerability Details CVE-ID: CVE-2014-0160 DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error in the TLS/DTLS heartbeat functionality. An attacker could exploit this vulnerabilit...

DEBIAN-CVE-2017-7828

A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox 57, Firefox ESR 52.5, and Thunderbird 52.5...

Important: Red Hat Security Advisory: kernel-alt security and bug fix update

An update for kernel-alt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fro...