Published: 05/10/2017 Updated: 17/01/2023

CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9

CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8

VMScore: 725

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Linux distributions that have not patched their long-term kernels with git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.

Vulnerable Product	Search on Vulmon	Subscribe to Product
redhat enterprise linux 7.0
redhat enterprise linux 6.0
redhat enterprise linux 7.2
redhat enterprise linux 7.1
redhat enterprise linux 6.7
redhat enterprise linux 7.3
centos centos 6.0
centos centos 6.1
centos centos 6.2
centos centos 6.3
centos centos 6.4
centos centos 6.5
centos centos 6.6
centos centos 6.7
centos centos 6.8
centos centos 6.9
centos centos 7.1611
centos centos 7.1511
centos centos 7.1503
centos centos 7.1406
redhat enterprise linux 6.1
redhat enterprise linux 6.2
redhat enterprise linux 6.3
redhat enterprise linux 6.4
redhat enterprise linux 6.5
redhat enterprise linux 6.6
redhat enterprise linux 6.8
redhat enterprise linux 6.9
linux linux kernel

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 66 Advanced Update Support and Red Hat Enterprise Linux 66 Telco Extended Update SupportRed Hat Product Security has rated this update as having a ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 65 Advanced Update Support and Red Hat Enterprise Linux 65 Telco Extended Update SupportRed Hat Product Security has rated this update as having a ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 67 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 64 Advanced Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 6Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base score, w ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 72 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 73 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 62 Advanced Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring S ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 59 Long LifeRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) b ...

Synopsis Important: kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 5 Extended Lifecycle SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring ...

A race condition in the IPC object implementation in the Linux kernel through 423 allows local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msgc, shmc, and utilc (CVE-2015-7613) Linux kernels built with the name spaces support(CONFIG_NAMESPACE) is vulnera ...

/* * CVE-2017-1000253c - an exploit for CentOS-7 kernel versions * 3100-514212el7x86_64 and 3100-514261el7x86_64 * Copyright (C) 2017 Qualys, Inc * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either ...

Patch alert! Easy-to-exploit flaw in Linux kernel rated 'high risk'

The Register • John Leyden • 28 Sep 2017

Urgent security triage needed

A flaw has been found in the way the Linux kernel loads ELF files. If a malicious program is built as a Position Independent Executable (PIE), the loader can be exploited to map part of that application's data segment over the memory area reserved for its stack. This can result in memory corruption and possible local privilege escalation. Red Hat and Debian are among Linux distros affected by the CVE-2017-1000253 vulnerability, which was discovered by cloud security firm Qualys. Red Hat's adviso...

CVE-2017-1000253

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