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CVE-2014-0203

Status Candidate

Overview

The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call.

Related Files

Ubuntu Security Notice USN-2333-1
Posted Sep 2, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2333-1 - A bug was discovered in the handling of pathname components when used with an autofs direct mount. A local user could exploit this flaw to cause a denial of service (system crash) via an open system call. Toralf reported an error in the Linux kernels syscall auditing on 32 bit x86 platforms. A local user could exploit this flaw to cause a denial of service (OOPS and system crash). An information leak was discovered in the control implementation of the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. A local user could exploit this flaw to obtain sensitive information from kernel memory. Various other issues were also addressed.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-0203, CVE-2014-4508, CVE-2014-4652, CVE-2014-4653, CVE-2014-4654, CVE-2014-4655, CVE-2014-4656, CVE-2014-4667, CVE-2014-5077
SHA-256 | 937ac3be9b799434ac81bf071aed2f115c6f145b2044ee77c51f45a088575c99
Ubuntu Security Notice USN-2332-1
Posted Sep 2, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2332-1 - A bug was discovered in the handling of pathname components when used with an autofs direct mount. A local user could exploit this flaw to cause a denial of service (system crash) via an open system call. Toralf reported an error in the Linux kernels syscall auditing on 32 bit x86 platforms. A local user could exploit this flaw to cause a denial of service (OOPS and system crash). An information leak was discovered in the control implementation of the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. A local user could exploit this flaw to obtain sensitive information from kernel memory. Various other issues were also addressed.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-0203, CVE-2014-4508, CVE-2014-4652, CVE-2014-4653, CVE-2014-4654, CVE-2014-4655, CVE-2014-4656, CVE-2014-4667, CVE-2014-5077
SHA-256 | d9919ad7ce17798e27ac5fdcd220af2dd382306a3e0b6db94d1b04fc95bac660
Red Hat Security Advisory 2014-0771-01
Posted Jun 19, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-0771-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance futexes. A local, unprivileged user could use this flaw to escalate their privileges on the system. A flaw was found in the way the Linux kernel's floppy driver handled user space provided data in certain error code paths while processing FDRAWCMD IOCTL commands. A local user with write access to /dev/fdX could use this flaw to free (using the kfree() function) arbitrary kernel memory. Various other issues were also addressed.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2013-6378, CVE-2014-0203, CVE-2014-1737, CVE-2014-1738, CVE-2014-1874, CVE-2014-2039, CVE-2014-3153
SHA-256 | 045975b06f49ae62face7f508bfd20413516dac60cbe25c8914c866298aa5808
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