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CVE-2014-7970

Status Candidate

Overview

The pivot_root implementation in fs/namespace.c in the Linux kernel through 3.17 does not properly interact with certain locations of a chroot directory, which allows local users to cause a denial of service (mount-tree loop) via . (dot) values in both arguments to the pivot_root system call.

Related Files

Red Hat Security Advisory 2017-1842-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1842-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: An use-after-free flaw was found in the Linux kernel which enables a race condition in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to escalate their privileges or crash the system. A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2014-7970, CVE-2014-7975, CVE-2015-8839, CVE-2015-8970, CVE-2016-10088, CVE-2016-10147, CVE-2016-10200, CVE-2016-6213, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9604, CVE-2016-9685, CVE-2016-9806, CVE-2017-2596, CVE-2017-2647, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616, CVE-2017-7889, CVE-2017-8797, CVE-2017-8890, CVE-2017-9074
MD5 | e79dcd340ec8fd5ccd78d062d54ebf21
Red Hat Security Advisory 2017-2077-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2077-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: An use-after-free flaw was found in the Linux kernel which enables a race condition in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to escalate their privileges or crash the system. A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2014-7970, CVE-2014-7975, CVE-2015-8839, CVE-2015-8970, CVE-2016-10088, CVE-2016-10147, CVE-2016-10200, CVE-2016-6213, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9604, CVE-2016-9685, CVE-2016-9806, CVE-2017-2596, CVE-2017-2647, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616, CVE-2017-7889, CVE-2017-8797, CVE-2017-8890, CVE-2017-9074
MD5 | 06777be13da445d34278d3bd85082db2
Ubuntu Security Notice USN-2513-1
Posted Feb 26, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2513-1 - A flaw was discovered in the Kernel Virtual Machine's (KVM) emulation of the SYSTENTER instruction when the guest OS does not initialize the SYSENTER MSRs. A guest OS user could exploit this flaw to cause a denial of service of the guest OS (crash) or potentially gain privileges on the guest OS. A flaw was discovered in the automatic loading of modules in the crypto subsystem of the Linux kernel. A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, crypto
systems | linux, ubuntu
advisories | CVE-2013-7421, CVE-2014-7970, CVE-2014-8160, CVE-2014-9529, CVE-2014-9584, CVE-2014-9585, CVE-2014-9644, CVE-2015-0239
MD5 | 49bbb85874fd3d3d1b8910135adf6930
Ubuntu Security Notice USN-2514-1
Posted Feb 26, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2514-1 - A flaw was discovered in the Kernel Virtual Machine's (KVM) emulation of the SYSTENTER instruction when the guest OS does not initialize the SYSENTER MSRs. A guest OS user could exploit this flaw to cause a denial of service of the guest OS (crash) or potentially gain privileges on the guest OS. A flaw was discovered in the automatic loading of modules in the crypto subsystem of the Linux kernel. A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, crypto
systems | linux, ubuntu
advisories | CVE-2013-7421, CVE-2014-7970, CVE-2014-8160, CVE-2014-9529, CVE-2014-9584, CVE-2014-9585, CVE-2014-9644, CVE-2015-0239
MD5 | 81434b9c48b9078b2c1c2c14dec55c5a
Ubuntu Security Notice USN-2448-2
Posted Dec 20, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2448-2 - USN-2448-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression TCP Throughput drops to zero for several drivers after upgrading. This update fixes the problem. An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel. Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). A flaw in the handling of malformed ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp, vulnerability, protocol
systems | linux, ubuntu
advisories | CVE-2014-3673, CVE-2014-3687, CVE-2014-3688, CVE-2014-7825, CVE-2014-7826, CVE-2014-7970, CVE-2014-8086, CVE-2014-8134, CVE-2014-8369, CVE-2014-9090
MD5 | a9714f14043ebbd90c277a112cfe2d36
Ubuntu Security Notice USN-2447-2
Posted Dec 20, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2447-2 - USN-2447-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression TCP Throughput drops to zero for several drivers after upgrading. This update fixes the problem. An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel. Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). A flaw in the handling of malformed ASCONF chunks by SCTP (Stream Control Transmission Protocol) implementation in the Linux kernel was discovered. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp, vulnerability, protocol
systems | linux, ubuntu
advisories | CVE-2014-3673, CVE-2014-3687, CVE-2014-3688, CVE-2014-7825, CVE-2014-7826, CVE-2014-7970, CVE-2014-8086, CVE-2014-8134, CVE-2014-8369, CVE-2014-9090
MD5 | 03cab965090f0ce4772db75751fe74ab
Ubuntu Security Notice USN-2448-1
Posted Dec 12, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2448-1 - An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel. Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-3673, CVE-2014-3687, CVE-2014-3688, CVE-2014-7825, CVE-2014-7826, CVE-2014-7970, CVE-2014-8086, CVE-2014-8134, CVE-2014-8369, CVE-2014-9090
MD5 | a8ecea701a96907e4e51218eb5d81681
Ubuntu Security Notice USN-2447-1
Posted Dec 12, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2447-1 - An information leak in the Linux kernel was discovered that could leak the high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine (KVM) paravirt guests. A user in the guest OS could exploit this leak to obtain information that could potentially be used to aid in attacking the kernel. Rabin Vincent, Robert Swiecki, Russell King discovered that the ftrace subsystem of the Linux kernel does not properly handle private syscall numbers. A local user could exploit this flaw to cause a denial of service (OOPS). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-3673, CVE-2014-3687, CVE-2014-3688, CVE-2014-7825, CVE-2014-7826, CVE-2014-7970, CVE-2014-8086, CVE-2014-8134, CVE-2014-8369, CVE-2014-9090
MD5 | d4b0b043b7bb1531ca068176505d49c6
Mandriva Linux Security Advisory 2014-230
Posted Nov 27, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-230 - Multiple vulnerabilities has been found and corrected in the Linux kernel. The updated packages provides a solution for these security issues.

tags | advisory, kernel, vulnerability
systems | linux, mandriva
advisories | CVE-2014-3610, CVE-2014-3611, CVE-2014-3645, CVE-2014-3646, CVE-2014-3647, CVE-2014-3673, CVE-2014-3687, CVE-2014-3690, CVE-2014-7825, CVE-2014-7826, CVE-2014-7970, CVE-2014-8369
MD5 | 0faf6770e14fbf8b183e2daab3b95edb
Ubuntu Security Notice USN-2420-1
Posted Nov 25, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2420-1 - A flaw was discovered in how the Linux kernel's KVM (Kernel Virtual Machine) subsystem handles the CR4 control register at VM entry on Intel processors. A local host OS user can exploit this to cause a denial of service (kill arbitrary processes, or system disruption) by leveraging /dev/kvm access. Don Bailey discovered a flaw in the LZO decompress algorithm used by the Linux kernel. An attacker could exploit this flaw to cause a denial of service (memory corruption or OOPS). Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-3690, CVE-2014-4608, CVE-2014-7970, CVE-2014-7975
MD5 | 77924cd0bf14e0bc879795779579ba2d
Ubuntu Security Notice USN-2419-1
Posted Nov 25, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2419-1 - A flaw was discovered in how the Linux kernel's KVM (Kernel Virtual Machine) subsystem handles the CR4 control register at VM entry on Intel processors. A local host OS user can exploit this to cause a denial of service (kill arbitrary processes, or system disruption) by leveraging /dev/kvm access. Don Bailey discovered a flaw in the LZO decompress algorithm used by the Linux kernel. An attacker could exploit this flaw to cause a denial of service (memory corruption or OOPS). Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-3690, CVE-2014-4608, CVE-2014-7970, CVE-2014-7975
MD5 | 27a784d3d15fc18622956bb427a27c95
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