Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3655-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3655-1 advisory. Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a...

Ubuntu: Security Advisory (USN-3657-1)

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...

USN-3657-1: Linux kernel (Raspberry Pi 2) vulnerabilities

It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information kernel netlink traffic. CVE-2017-17449 Tuba Yavuz discovered that a...

USN-3655-2: Linux kernel (Trusty HWE) vulnerabilities

USN-3655-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Jann Horn and Ken Johnson discovered that microprocessors...

USN-3655-1: Linux kernel vulnerabilities

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memor...

USN-3653-2: Linux kernel (HWE) vulnerabilities

USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn and Ken Johnson discovered that microprocessors utilizing...

USN-3653-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities

USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn and Ken Johnson discovered that microprocessors utilizing...

USN-3653-1: Linux kernel vulnerabilities

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memor...

DEBIAN-CVE-2017-18208

The madvisewillneed function in mm/madvise.c in the Linux kernel before 4.14.4 allows local users to cause a denial of service infinite loop by triggering use of MADVISEWILLNEED for a DAX mapping...

UBUNTU-CVE-2017-18208

The madvisewillneed function in mm/madvise.c in the Linux kernel before 4.14.4 allows local users to cause a denial of service infinite loop by triggering use of MADVISEWILLNEED for a DAX mapping...

Linux kernel 'madvise_willneed' function denial of service vulnerability

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A security vulnerability exists in the 'madvisewillneed' function in the mm/madvise.c file in versions of Linux kernel prior to 4.14.4. A local attacker can exploit th...

Linux Kernel - The Huge Dirty Cow Overwriting The Huge Zero Page (2)

Linux Kernel - The Huge Dirty Cow Overwriting The Huge Zero Page 2 / The code is modified from https://www.exploit-db.com/exploits/43199/ / define GNUSOURCE include include include include include include include include include include include include define TRIESPERPAGE 20000000 define PAGESIZE...

Linux Kernel - 'The Huge Dirty Cow' Overwriting The Huge Zero Page (2)

/ The code is modified from https://www.exploit-db.com/exploits/43199/ / define GNUSOURCE include include include include include include include include include include include include define TRIESPERPAGE 20000000 define PAGESIZE 0x1000 define MEMESETVAL 0x41 define MAPSIZE 0x200000 define STRIN...

Linux Kernel Dirty COW PTRACE_POKEDATA Privilege Escalation

// $ echo pikachu|sudo tee pokeball;ls -l pokeball;gcc -pthread pokemon.c -o d;./d pokeball miltank;cat pokeball include //// pikachu include //// -rw-r--r-- 1 root root 8 Apr 4 12:34 pokeball include //// pokeball include //// include //// o o/ include //// @@ \ include //// \ , /miltank include...

DirtyCow Linux Kernel Race Condition Exploit

Exploit for linux platform in category local exploits / dirtyc0w.c $ sudo -s echo this is not a test foo chmod 0404 foo $ ls -lah foo -r-----r-- 1 root root 19 Oct 20 15:23 foo $ cat foo this is not a test $ gcc -lpthread dirtyc0w.c -o dirtyc0w $ ./dirtyc0w foo m00000000000000000 mmap 56123000...

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

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.5. 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 from...

Linux kernel competitive conditions vulnerability

The Linux kernel is the kernel used by the operating system Linux, released by the Linux Foundation in the United States. A competitive condition vulnerability exists in the Advanced Union Filesystem aufs aufs3-mmap.patch and aufs4-mmap.patch patches for Linux kernel versions 3.x and 4.x. The...

CVE-2015-7312

Multiple race conditions in the Advanced Union Filesystem aufs aufs3-mmap.patch and aufs4-mmap.patch patches for the Linux kernel 3.x and 4.x allow local users to cause a denial of service use-after-free and BUG or possibly gain privileges via a 1 madvise or 2 msync system call, related to...

DEBIAN-CVE-2015-7312

Multiple race conditions in the Advanced Union Filesystem aufs aufs3-mmap.patch and aufs4-mmap.patch patches for the Linux kernel 3.x and 4.x allow local users to cause a denial of service use-after-free and BUG or possibly gain privileges via a 1 madvise or 2 msync system call, related to...

Race condition

Multiple race conditions in the Advanced Union Filesystem aufs aufs3-mmap.patch and aufs4-mmap.patch patches for the Linux kernel 3.x and 4.x allow local users to cause a denial of service use-after-free and BUG or possibly gain privileges via a 1 madvise or 2 msync system call, related to...