ID

VAR-201405-0243

CVE

CVE-2014-0196

TITLE

Linux kernel n_tty_write 'function competition condition vulnerability

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. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2014-0196 Jiri Slaby discovered a race condition in the pty layer, which could lead to a denial of service or privilege escalation. This could result in a privilege escalation. For the oldstable distribution (squeeze), this problem has been fixed in version 2.6.32-48squeeze6. The following matrix lists additional source packages that were rebuilt for compatibility with or to take advantage of this update: Debian 6.0 (squeeze) user-mode-linux 2.6.32-1um-4+48squeeze6 We recommend that you upgrade your linux-2.6 and user-mode-linux packages. However, given the high frequency at which low-severity security issues are discovered in the kernel and the resource requirements of doing an update, updates for lower priority issues will normally not be released for all kernels at the same time. Rather, they will be released in a staggered or "leap-frog" fashion. ============================================================================ Ubuntu Security Notice USN-2227-1 May 27, 2014 linux-ti-omap4 vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 LTS Summary: Several security issues were fixed in the kernel. Software Description: - linux-ti-omap4: Linux kernel for OMAP4 Details: A flaw was discovered in the Linux kernel's pseudo tty (pty) device. An unprivileged user could exploit this flaw to cause a denial of service (system crash) or potentially gain administrator privileges. (CVE-2014-0196) Matthew Daley reported an information leak in the floppy disk driver of the Linux kernel. (CVE-2014-1738) Matthew Daley reported a flaw in the handling of ioctl commands by the floppy disk driver in the Linux kernel. An unprivileged local user could exploit this flaw to gain administrative privileges if the floppy disk module is loaded. (CVE-2014-1737) A flaw was discovered in the Linux kernel's IPC reference counting. An unprivileged local user could exploit this flaw to cause a denial of service (OOM system crash). (CVE-2013-4483) Al Viro discovered an error in how CIFS in the Linux kernel handles uncached write operations. (CVE-2014-0069) A flaw was discovered in the handling of network packets when mergeable buffers are disabled for virtual machines in the Linux kernel. Guest OS users may exploit this flaw to cause a denial of service (host OS crash) or possibly gain privilege on the host OS. (CVE-2014-0077) A flaw was discovered in the Linux kernel's handling of the SCTP handshake. A remote attacker could exploit this flaw to cause a denial of service (system crash). (CVE-2014-0101) A flaw was discovered in the handling of routing information in Linux kernel's IPv6 stack. A remote attacker could exploit this flaw to cause a denial of service (memory consumption) via a flood of ICMPv6 router advertisement packets. (CVE-2014-2309) An error was discovered in the Linux kernel's DCCP protocol support. (CVE-2014-2523) Max Sydorenko discovered a race condition in the Atheros 9k wireless driver in the Linux kernel. This race could be exploited by remote attackers to cause a denial of service (system crash). (CVE-2014-2672) An error was discovered in the Reliable Datagram Sockets (RDS) protocol stack in the Linux kernel. A local user could exploit this flaw to cause a denial of service (system crash) or possibly have unspecified other impact. (CVE-2014-2678) Yaara Rozenblum discovered a race condition in the Linux kernel's Generic IEEE 802.11 Networking Stack (mac80211). Remote attackers could exploit this flaw to cause a denial of service (system crash). (CVE-2014-2706) A flaw was discovered in the Linux kernel's ping sockets. An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or possibly gain privileges via a crafted application. (CVE-2014-2851) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 LTS: linux-image-3.2.0-1446-omap4 3.2.0-1446.65 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well. References: http://www.ubuntu.com/usn/usn-2227-1 CVE-2013-4483, CVE-2014-0069, CVE-2014-0077, CVE-2014-0101, CVE-2014-0196, CVE-2014-1737, CVE-2014-1738, CVE-2014-2309, CVE-2014-2523, CVE-2014-2672, CVE-2014-2678, CVE-2014-2706, CVE-2014-2851 Package Information: https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1446.65 . -----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 sctp_sf_do_5_1D_ce function in net/sctp/sm_statefuns.c in the Linux kernel through 3.13.6 does not validate certain auth_enable and auth_capable fields before making an sctp_sf_authenticate call, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an SCTP handshake with a modified INIT chunk and a crafted AUTH chunk before a COOKIE_ECHO chunk (CVE-2014-0101). The updated packages provides a solution for these security issues. _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2137 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2897 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0069 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0077 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0101 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0196 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1737 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1738 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1874 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2039 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2309 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2523 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2672 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2678 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2706 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2851 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3144 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3145 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3153 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3917 _______________________________________________________________________ Updated Packages: Mandriva Business Server 1/X86_64: d4a1665d801553272f379aa8190d7208 mbs1/x86_64/cpupower-3.4.93-1.1.mbs1.x86_64.rpm dac586e9467ccffcb0f03d7d6902c714 mbs1/x86_64/kernel-firmware-3.4.93-1.1.mbs1.noarch.rpm d67bdbd6148b7e7f187244fc2fb17629 mbs1/x86_64/kernel-headers-3.4.93-1.1.mbs1.src.rpm 6f011d528d57e6bfe3f348e124cc11d5 mbs1/x86_64/kernel-headers-3.4.93-1.1.mbs1.x86_64.rpm 6d7935addb463a2dc0cec144390f0786 mbs1/x86_64/kernel-server-3.4.93-1.1.mbs1.x86_64.rpm c013f3a9ae5f48694d91bfac81169c67 mbs1/x86_64/kernel-server-devel-3.4.93-1.1.mbs1.x86_64.rpm 87c7893b5fdfed6d766cac365e78f213 mbs1/x86_64/kernel-source-3.4.93-1.mbs1.noarch.rpm 298e025c2b05845d67efc4566db3d152 mbs1/x86_64/lib64cpupower0-3.4.93-1.1.mbs1.x86_64.rpm 45e43387ed27d1281fe5b15304f796f6 mbs1/x86_64/lib64cpupower-devel-3.4.93-1.1.mbs1.x86_64.rpm 3a74f07a429ea1b403d676f73b7ecbf9 mbs1/x86_64/perf-3.4.93-1.1.mbs1.x86_64.rpm bd6bd37cd3ff3b6844b04821d6da2779 mbs1/SRPMS/cpupower-3.4.93-1.1.mbs1.src.rpm 88c98d0723446a0717159574e06d9e3b mbs1/SRPMS/kernel-firmware-3.4.93-1.1.mbs1.src.rpm 7a84b2886c92e812943c76b2faafd068 mbs1/SRPMS/kernel-server-3.4.93-1.1.mbs1.src.rpm 7a431cec5f9862815f4d92f2ca1f8d9d mbs1/SRPMS/kernel-source-3.4.93-1.mbs1.src.rpm 65654157eb504295dbd05676ed40c968 mbs1/SRPMS/perf-3.4.93-1.1.mbs1.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. 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----- . (CVE-2014-2851) Sasha Levin reported a bug in the Linux kernel's virtual memory management subsystem

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

competition condition problem

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Ubuntu

SOURCES

LAST UPDATE DATE

2026-08-28T22:44:40.901000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE