ID

VAR-201405-0243

CVE

CVE-2014-0196

TITLE

Linux Kernel of drivers/tty/n_tty.c of n_tty_write Service disruption in functions (DoS) Vulnerabilities

DESCRIPTION

The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings. The Linux kernel is prone to a memory-corruption vulnerability. Local attackers can exploit this issue to execute arbitrary code in contexts of the application or corrupt the kernel memory. Failed exploit attempts can result in a denial-of-service condition. Linux kernel 3.0 through versions 3.14.3 are vulnerable. This BID is being retired as a duplicate of BID 67199. The NFSv4 implementation is one of the distributed file system protocols. The vulnerability is caused by the program not properly managing the access rights of the tty driver. 6.3) - i386, ppc64, s390x, x86_64 3. ============================================================================ Ubuntu Security Notice USN-2197-1 May 06, 2014 linux-ec2 vulnerability ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 10.04 LTS Summary: The system could be made to crash or run programs as an administrator. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 10.04 LTS: linux-image-2.6.32-363-ec2 2.6.32-363.77 After a standard system update you need to reboot your computer to make all the necessary changes. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2014:0520-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-0520.html Issue date: 2014-05-20 CVE Names: CVE-2014-0101 CVE-2014-0196 ===================================================================== 1. Summary: Updated kernel packages that fix two security issues and one bug are now available for Red Hat Enterprise Linux 6.2 Extended Update Support. The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux AUS (v. 6.2 server) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64 3. * A flaw was found in the way the Linux kernel processed an authenticated COOKIE_ECHO chunk during the initialization of an SCTP connection. A remote attacker could use this flaw to crash the system by initiating a specially crafted SCTP handshake in order to trigger a NULL pointer dereference on the system. (CVE-2014-0101, Important) * A race condition flaw, leading to heap-based buffer overflows, was found in the way the Linux kernel's N_TTY line discipline (LDISC) implementation handled concurrent processing of echo output and TTY write operations originating from user space when the underlying TTY driver was PTY. An unprivileged, local user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-0196, Important) Red Hat would like to thank Nokia Siemens Networks for reporting CVE-2014-0101. This update also fixes the following bug: * Prior to this update, a guest-provided value was used as the head length of the socket buffer allocated on the host. If the host was under heavy memory load and the guest-provided value was too large, the allocation could have failed, resulting in stalls and packet drops in the guest's Tx path. With this update, the guest-provided value has been limited to a reasonable size so that socket buffer allocations on the host succeed regardless of the memory load on the host, and guests can send packets without experiencing packet drops or stalls. (BZ#1092349) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258 To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system. 5. Bugs fixed (https://bugzilla.redhat.com/): 1070705 - CVE-2014-0101 kernel: net: sctp: null pointer dereference when processing authenticated cookie_echo chunk 1094232 - CVE-2014-0196 kernel: pty layer race condition leading to memory corruption 6. Package List: Red Hat Enterprise Linux AUS (v. 6.2 server): Source: kernel-2.6.32-220.51.1.el6.src.rpm noarch: kernel-doc-2.6.32-220.51.1.el6.noarch.rpm kernel-firmware-2.6.32-220.51.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.51.1.el6.x86_64.rpm kernel-debug-2.6.32-220.51.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.51.1.el6.x86_64.rpm kernel-devel-2.6.32-220.51.1.el6.x86_64.rpm kernel-headers-2.6.32-220.51.1.el6.x86_64.rpm perf-2.6.32-220.51.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.2): Source: kernel-2.6.32-220.51.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.51.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm python-perf-2.6.32-220.51.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2014-0101.html https://www.redhat.com/security/data/cve/CVE-2014-0196.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2014 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFTezblXlSAg2UNWIIRAmwqAJ4iqO38Q7yoerug1+H3HoqaDatihQCglxfr WO2lCHAkHLamTSZIOqFVk6Q= =ofqj -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 _______________________________________________________________________ Mandriva Linux Security Advisory MDVSA-2014:124 http://www.mandriva.com/en/support/security/ _______________________________________________________________________ Package : kernel Date : June 13, 2014 Affected: Business Server 1.0 _______________________________________________________________________ Problem Description: Multiple vulnerabilities has been found and corrected in the Linux kernel: kernel/auditsc.c in the Linux kernel through 3.14.5, when CONFIG_AUDITSYSCALL is enabled with certain syscall rules, allows local users to obtain potentially sensitive single-bit values from kernel memory or cause a denial of service (OOPS) via a large value of a syscall number (CVE-2014-3917). The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification (CVE-2014-3153). NOTE: the affected code was moved to the __skb_get_nlattr and __skb_get_nlattr_nest functions before the vulnerability was announced (CVE-2014-3144). NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced (CVE-2014-3145). Multiple array index errors in drivers/hid/hid-multitouch.c in the Human Interface Device (HID) subsystem in the Linux kernel through 3.11, when CONFIG_HID_MULTITOUCH is enabled, allow physically proximate attackers to cause a denial of service (heap memory corruption, or NULL pointer dereference and OOPS) via a crafted device (CVE-2013-2897). The updated packages provides a solution for these security issues. The verification of md5 checksums and GPG signatures is performed automatically for you. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/en/support/security/advisories/ If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iD8DBQFTmvH3mqjQ0CJFipgRAjgaAKDtCfvK/cukQMyPkhdgllxaobQHFQCdHoJo g42VcK2YoEgcX9BPP3/zfWg= =4uZg -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

competition condition problem

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Peter Hurley

SOURCES

LAST UPDATE DATE

2026-03-14T22:13:44.526000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE